Hobby rocketry patents?

[Winston]

Is there any collection on-line of hobby rocketry patents? I've found quite a few via patent search engine searches, but the keywords you'd think would be the ones to use don't turn up many of them that must be present. I have yet to do keyword searches on manufacturers like Centuri, Estes, Aerotech, etc., but I'll be doing that shortly. Before I spend more time, I'm wondering if someone else has already done this. I figure they must have.

 

[Sooner Boomer]

I used to have a collection of the patents I've found. Stuff like Aerotech's reloadable motor system and copperhead igniter, and Peter Always slide-back glider. No idea where they are, I'll try to find them and post the numbers.

 

[XolveJohn]

I ran into an Estes one from 1969 for the pop pod boost glider. Pretty funny.

https://www.google.com/patents/US3452471

Since prior art already existed, this patent should not have been granted.

And being someone who has a patent, something I created on a temp job, I learned they are mainly for big companies,

if you do not sell $10 million dolla worth, you cannot afford to enforce your patent. And it is very easy to get around most of them by making a couple of strategic changes.

Their reasoning on the operation of this BG is totally wrong, as I proved with my RumbleBee design (see under Rocket Boosted Glider section on this forum).

 

[soopirV]

I've been trying to see if something I've come up with is patentable (not rocket related), and have really struggled trying to find prior-art. I've spoken with a patent attorney here at work to get some tips, and he gave some pointers on effective searching, and while I haven't yet been able to really dig in, my first couple searches returned 0 hits...this is exceedingly unlikely with nearly 9 million US patents in circulation. Short story is, prior art search (finding existing patents) is in itself, an art!

 

[XolveJohn]

If at all possible, it is better, especially for the little guy, to keep the tech secret, and DON'T get a patent. Just a few percent of patents ever make money, and the "Patent Help/Inventor" firms rip off a lot of folks.

There was a guy who invented a neat radio controlled searchlite for pleasure boats, patented, and started having Walmart sell it. It sold well, but eventually they stopped buying it from him, they were having it MADE IN CHINA. So now you have to sue China! Good luck. He did eventually get a halt order, and some money out of them.

The classic story is the guy who invented the first delayed wiper system for cars. In the early 1960's, the corps could just not figure it out, using mechanical devices and pneumatics, it was too hard, he came up with an electronic timer. Got a patent. ALL the big car co ripped it off. He had a nervous breakdown. There is a movie about it. Eventually, after the patent ran out, he managed to get some money from them.

I tell people to avoid patents unless they are sure they will sell ten million dollars worth of product, otherwise you cannot afford the lawyers for enforcement. This actually came from a lawyer.

 

[soopirV]

If at all possible, it is better, especially for the little guy, to keep the tech secret, and DON'T get a patent. Just a few percent of patents ever make money, and the "Patent Help/Inventor" firms rip off a lot of folks.

There was a guy who invented a neat radio controlled searchlite for pleasure boats, patented, and started having Walmart sell it. It sold well, but eventually they stopped buying it from him, they were having it MADE IN CHINA. So now you have to sue China! Good luck. He did eventually get a halt order, and some money out of them.

The classic story is the guy who invented the first delayed wiper system for cars. In the early 1960's, the corps could just not figure it out, using mechanical devices and pneumatics, it was too hard, he came up with an electronic timer. Got a patent. ALL the big car co ripped it off. He had a nervous breakdown. There is a movie about it. Eventually, after the patent ran out, he managed to get some money from them.

I tell people to avoid patents unless they are sure they will sell ten million dollars worth of product, otherwise you cannot afford the lawyers for enforcement. This actually came from a lawyer.

I heard from the same attorney that there are multiple levels of protection with increasing cost, of course- a provisional patent filing allows you to put "pat pending" on your device to dissuade any copycats, but you only have a year to file. There are US-only patents, and international. Keep in mind the purpose of a patent is to truly drive innovation by disclosing the idea to the public, so others can build on it. The benefit to the inventor is to receive protection for a period of time so he or she can recoup the development costs.

 

[XolveJohn]

You can disclose your ideas by just putting them on a website or forum!

Patents don't provide any protection if you don't have money to get lawyers to hammer rippers.

Smart companies try to avoid them if possible, avoid a lot of costs, and they run out eventually anyway.

In case you did not know, the patent office will grant a patent on SOMETHING THAT DOES NOT WORK.

It just has to be new, and unique.

Perpetual motion:

https://www.google.com/patents/EP2505807A2?cl=en

More free power. This guy is a bigger crackpot than me, and I rarely grant that. He is completely full of $#!^

https://jnaudin.free.fr/meg/meg.htm

 

[Winston]

I used to have a collection of the patents I've found. Stuff like Aerotech's reloadable motor system and copperhead igniter, and Peter Always slide-back glider. No idea where they are, I'll try to find them and post the numbers.

That would be great and the best way to do it - simply list the numbers. I'll compile the numbers I have and post them.

 

[Sooner Boomer]

I'm afraid a lot of stuff was lost in a hard drive crash; 3 TB of files. But a few minutes poking around the U.S.T.P.O. yielded these:

9,416,753 Full-Text Rocket delay apparatuses, systems and methods
7,918,419 Full-Text Rocket ejection delay apparatus and/or method
6,926,576 Full-Text Rocket with backwards gliding recovery (Peter Alway's patent)
6,079,202 Full-Text Reloadable/modular solid propellant rocket motor
5,579,636 Full-Text Pyrotechnic valve, igniter and combustion preheater for hybrid rocket motors
5,410,966 Full-Text High reliability model rocket engine igniter system
5,123,355 Full-Text Rocket ignition assembly and means and methods for making and using same (Copperhead)
5,054,397 Full-Text Parachute ejection and recovery system for rockets
5,004,186 Full-Text Finlock alignment mechanism for rockets

not model rocket
8,678,321 Full-Text Sea landing of space launch vehicles and associated systems and methods

One helpful web site is https://pat2pdf.org

 

[cerving]

https://jnaudin.free.fr/meg/meg.htm

View attachment 323110

Hey, he stole Doc Brown's flux capacitor!

 

[Sooner Boomer]

In case you did not know, the patent office will grant a patent on SOMETHING THAT DOES NOT WORK.

It just has to be new, and unique.

The so-called Hieronymus Machine, patent 2482773 "DETECTION OF EMANATIONS FROM MATERIALS AND MEASUREMENT OF THE VOLUMES. THEREOF" https://www.pat2pdf.org/patents/pat2482773.pdf
Basically, you can look at the light emenated from or reflected by an object and tell what it's made of and how much is there. This is like saying youu can analyze the picture of a car and tell the alloys the engine is made of.

One of my favorites, the "Dean Drive".
https://en.wikipedia.org/wiki/Dean_drive
https://www.pat2pdf.org/patents/pat2886976.pdf
Not quite a perpetual motion device, it purports to take rotary motion and turn it into unidirectional motion - in free space.

I actually had an idea for a patent a loooong time ago. Did research, and found I had rediscovered one of the most patented concepts, the two cone (or two pulley) transmission.
https://en.wikipedia.org/wiki/Continuously_variable_transmission

 

[XolveJohn]

That is the CVT transmission, used to just be in snowmobiles, now some small cars have them.

Beware of patents, they are easy to get around if you know how. And are a sinkhole for the little guy.

Cerving: The Flux Cap probably works better. I actually read the whole MEG patent, because it pissed me off.

I was doing some work on 2KW ferrite xfmr inverters, not that big on physics, but was looking for proof he was full of it.
Ran it by a phd pal, he verified it was nonsense. I found he contradicted himself in the patent. In one place he said the magnets would not become demagnetized, in another part he said they could. BUSTED!

Here are a couple rocket patents, a firing system, and the Estes motor:

launch system

https://www.google.com/patents/US4930393

estes

https://modelrocketbuilding.blogspot.com/2011/06/vern-estes-motor-patent.html

The launch system will never sell $10 million worth, so should not have been patented. The Estes, motor, maybe.

 

[Winston]

I've also included the most interesting water rocket and compressed air rocket patents I found and listed patent applications, too (the longest numbers preceded by year of application). In some cases I didn't use the vague patent title and substituted a more descriptive one in the file name since any check of one's patents on hand can be more easily determined by the patent number and not the title.

I would like to have the many more solid propellant model rocket patents which I expect must exist but which I didn't find using my keywords. If you have a patent number I don't have in the list below, please list it here.

Patent search done at:

https://www.uspto.gov/patents-application-process/search-patents

20020020401A1 - Toy Rocket Set (Compressed air tube launched).pdf
20030194943A1 - Model Rocket Motor Retainer Apparatus.pdf
20040102130A1 - Flyable Model Rocket (Made from cardboard cutouts).pdf
20040159740A1 - Hydrogen Powered Toy Rocket Utilizing Hydrogen From The Electrolysis Of Water.pdf
20050009440A1 - Air-Water Powered Rocket Toy With Inflatable Fuselage.pdf
20050085153A1 - Toy Rocket Launch Pad With Directional Safety Valve (Another bellows launcher).pdf
20060225716A1 - Rocket Launcher Toy (Stomped air bellows type compressed air rocket).pdf
20070012305A1 - Toy Water Rocket Launcher (Uses city water pressure to compress air).pdf
20070077852A1 - Toy Rocket Launcher For Multiple Soft Toy Rockets.pdf
20080289530A1 - Airborne Device Such As Model Rocket With Light And Sound For Observing And Retrieving.pdf
20090104839A1 - Launching Device For Toy Rocket (Water rocket).pdf
20120138037A1 - EZ-Launch Two Liter Pop Bottle Launcher.pdf
20140120797A1 - Glide-A-Raptor.pdf
20140370776A1 - Method And Apparatus For A Two-Stage Model Rocket (Estes-Cox).pdf
20170009440A1 - Compressed Air Power Systems That Use Stored Energy to Propel Toy Items.pdf
2841084 - Toy Rocket (First 'model rocket' patent).pdf
2918751 - Reaction Propulsion Toy.pdf
2927398 - Multiple Stage Rocket (Water rocket).pdf
3029704 - Steam Powered Rocket And Launcher Therefor.pdf
3049832 - Two-Stage (Water) Rocket.pdf
3082666 - Method And Appartus For Propulsion (Manned steam rocket).pdf
3292302 - Multistage Model Rocket (Estes staging method).pdf
3363559 - Resistance Fuse Wire (Estes igniter - original).pdf
3422763 - Rocket Engine Igniter (Model rocket electrical type).pdf
3452471 - Model Boost Glider.pdf
3503333 - Resistance Fuse Wire (Estes igniter - later patent).pdf
3510980 - Propelled Toy Arrangement And Method (Water rocket with side 'chute ejection).pdf
3646887 - Model Rocket And Shock Chord Retainer Therefor.pdf
3650214 - Toy Rocket And Gas Propellant System.pdf
3662685 - Firing Means For A Model Rocket.pdf
3719145 - Recovery Device Ejection Baffle System for Minaiture Rockets.pdf
3721193 - Multi-stage Model Rocekt Assembly (Centuri staging method).pdf
3736836 - Launching Pad Assembly For Model Rockets (Centuri).pdf
3741120 - Metal Foil Ignitor (Centuri).pdf
3785083 - Reaction Toy Arrangement And Method (Multistage water rocket).pdf
3787013 - Foldable Kite And Rocket Launching Means Therefor.pdf
3795194 - Model Rocket (Recessed motor, ducted & finless).pdf
3805355 - Fixture for Model Rocket (Fin jig).pdf
3820275 - Toy Rocket Motor with Pressure-Responsive Means Activated by Propellant Pressure.pdf
3844557 - Rocket Motor Driven Model Racing Vehicle.pdf
3888178 - Model Rocket-Glider.pdf
3903801 - Model Rocket and Recovery Device Therefore.pdf
3912562 - Low Temperature Gas Generator Propellant.pdf
3937191 - Rocket Launcher Including Remotely Releasable Pin Latch (Estes freon rockets).pdf
3942441 - Model Rocket-Glider 2.pdf
3943656 - Two Stage Freon Rocket.pdf
3943656 - Two Stage Rocket with Pressure Responsive Means for Frictionally Engaging Second Stage.pdf
3977120 - Toy Rocket Glider.pdf
4038776 - Rocket Toy (Compressed Air Launched).pdf
4257152 - Centuri Fin Alignment Jig.pdf
4257152 - Fin Assembly System for Model Rockets (Centuri fin jig).pdf
4355577 - Model Rocket Propulsion System.pdf
4374493 - Ultra-light Model Rocket Construction.pdf
4466213 - Aerial Flight Device (Spiral recovery of rocket).pdf
4655137 - Igniter For Model Rocket Engine.pdf
4687455 - Telescoping Body Tube Recovery System Deployment.pdf
4930393 - Model Rocket Launch System.pdf
5004186 - Finlock Alignment Mechanism For Rockets (Aerotech).pdf
5004441 - Estes Model Rocket Car.pdf
5054397 - Parachute Ejection And Recovery System For Rockets (Aerotech's mesh baffle system).pdf
5123355 - Foil Laminated Plastic Reloadable Rocket Motor Igniter (Aerotech Copperheads).pdf
5183960 - Ejection Charge Jettisoned Nose Ballast for Boost Gliders.pdf
5212946 - Reloadable-Modular Solid Rocket Motor.pdf
5267885 - Through the Wall Fins (Centuri).pdf
5312286 - Flying Toy (Balloon propelled lightweight rockets or planes).pdf
5410966 - Centuri Igniter.pdf
5413514 - Helicopter Recovery Rocket.pdf
5507451 - Shutlle Launch System For Model Rocket.pdf
5507541 - Shuttle Launch System for Model Rocket.pdf
5509354 - Centuri Igniter Plug-Holder.pdf
5538453 - Compressed Air Rocket Launcher.pdf
5549497 - Toy Rocket with Velocity Dependent Parachute Release.pdf
5579636 - Pyrotechnic Valve, Igniter And Combustion Preheater For Hybrid Rocket Motors (Aerotech).pdf
5653216 - Compressed Air Rocket & Launcher.pdf
5712446 - Flat-Sided Modle Rocket And Method Therefor.pdf
5780765 - Igniter and Pyrogen Compound.pdf
5785278 - Pressure Dependent Parachute Release Device For Air-Water Rockets.pdf
5881706 - Toy Rocket Launcher (Easy to DIY water rocket hold-down & release system).pdf
5886282 - Electrical Rocket Igniter.pdf
5951354 - Rocket Side Parachute Deployment Hatch.pdf
6022260 - Kit For Constructing A Model Rocket (Accordioning cardboard).pdf
6073086 - Time Of Motion, Speed, And Trajectory Height Measuring Device.pdf
6155173 - Model Rocket Motor Retainer.pdf
6321737B1 - Toy Rocket Launcher (Compressed air rocket).pdf
6361393 - Magnetic Impulse Reaction Driven Toys (Magentic repulsion toy rocket launcher).pdf
6460531B1 - Toy Rocket Launcher (Rotary bellows launcher).pdf
6478648B1 - Toy Rocket with Parachute Hatch Release.pdf
6568170B1 - Baking Soda and Vinegar Plastic Bottle Rocket.pdf
6586170 - Rocket With High Pressure Fueling Module (Water bottle rocket).pdf
6679155B1 - Hydrogen Powered Rocket (Another H2-O2 explosion propelled rocket).pdf
6926576B1 - Rocket with Backwards Gliding Recovery.pdf
6957526 - Pressure Actuated Toy Rocket System (Soda-vinegar plastic bottle rocket).pdf
7252079 - Safe Air-Pressure-Launched Toy Rocket System (Palm closed air valve on ram cylinder).pdf
7537508B1 - Carbide Model Rocket.pdf
7900621B2 - Mass Launch Water Rocket System.pdf
8006936B1 - Chute Tamer Patent.pdf
8998669B2 - 2-stage Model Rocket (Estes Pro Series II E2X).pdf

A clever item from a patent listed above which could be 3D printed which shows one of the reasons I like looking at patents. Note how the balloon fill neck is folded back over the device at the nozzle to hold the device in place.:

I didn't find a toy on the market which used that patent nor did I find a 3D file of anything similar on Thingiverse. However, I did find this neat item on Thingiverse during my search:

https://www.thingiverse.com/thing:1936208

[video=youtube;wl0n9UZzOhQ]https://www.youtube.com/watch?v=wl0n9UZzOhQ[/video]

 

[Winston]

I'm afraid a lot of stuff was lost in a hard drive crash; 3 TB of files. But a few minutes poking around the U.S.T.P.O. yielded these:

9,416,753 Full-Text Rocket delay apparatuses, systems and methods
7,918,419 Full-Text Rocket ejection delay apparatus and/or method
6,926,576 Full-Text Rocket with backwards gliding recovery (Peter Alway's patent)
6,079,202 Full-Text Reloadable/modular solid propellant rocket motor
5,579,636 Full-Text Pyrotechnic valve, igniter and combustion preheater for hybrid rocket motors
5,410,966 Full-Text High reliability model rocket engine igniter system
5,123,355 Full-Text Rocket ignition assembly and means and methods for making and using same (Copperhead)
5,054,397 Full-Text Parachute ejection and recovery system for rockets
5,004,186 Full-Text Finlock alignment mechanism for rockets

not model rocket
8,678,321 Full-Text Sea landing of space launch vehicles and associated systems and methods

One helpful web site is https://pat2pdf.org

Thanks!

 

[Winston]

That is the CVT transmission, used to just be in snowmobiles, now some small cars have them.

Beware of patents, they are easy to get around if you know how. And are a sinkhole for the little guy.

Cerving: The Flux Cap probably works better. I actually read the whole MEG patent, because it pissed me off.

I was doing some work on 2KW ferrite xfmr inverters, not that big on physics, but was looking for proof he was full of it.
Ran it by a phd pal, he verified it was nonsense. I found he contradicted himself in the patent. In one place he said the magnets would not become demagnetized, in another part he said they could. BUSTED!

Here are a couple rocket patents, a firing system, and the Estes motor:

launch system

https://www.google.com/patents/US4930393

estes

https://modelrocketbuilding.blogspot.com/2011/06/vern-estes-motor-patent.html

The launch system will never sell $10 million worth, so should not have been patented. The Estes, motor, maybe.

Thanks!

 

[Winston]

List updated with forum inputs:

20020020401A1 - Toy Rocket Set (Compressed air tube launched).pdf
20030194943A1 - Model Rocket Motor Retainer Apparatus.pdf
20040102130A1 - Flyable Model Rocket (Made from cardboard cutouts).pdf
20040159740A1 - Hydrogen Powered Toy Rocket Utilizing Hydrogen From The Electrolysis Of Water.pdf
20050009440A1 - Air-Water Powered Rocket Toy With Inflatable Fuselage.pdf
20050085153A1 - Toy Rocket Launch Pad With Directional Safety Valve (Another bellows launcher).pdf
20060225716A1 - Rocket Launcher Toy (Stomped air bellows type compressed air rocket).pdf
20070012305A1 - Toy Water Rocket Launcher (Uses city water pressure to compress air).pdf
20070077852A1 - Toy Rocket Launcher For Multiple Soft Toy Rockets.pdf
20080289530A1 - Airborne Device Such As Model Rocket With Light And Sound For Observing And Retrieving.pdf
20090104839A1 - Launching Device For Toy Rocket (Water rocket).pdf
20120138037A1 - EZ-Launch Two Liter Pop Bottle Launcher.pdf
20140120797A1 - Glide-A-Raptor.pdf
20140370776A1 - Method And Apparatus For A Two-Stage Model Rocket (Estes-Cox).pdf
20170009440A1 - Compressed Air Power Systems That Use Stored Energy to Propel Toy Items.pdf
2841084 - Toy Rocket (First 'model rocket' patent).pdf
2918751 - Reaction Propulsion Toy.pdf
2927398 - Multiple Stage Rocket (Water rocket).pdf
3029704 - Steam Powered Rocket And Launcher Therefor.pdf
3049832 - Two-Stage (Water) Rocket.pdf
3082666 - Method And Appartus For Propulsion (Manned steam rocket).pdf
3292302 - Multistage Model Rocket (Estes staging method).pdf
3363559 - Resistance Fuse Wire (Estes igniter - original).pdf
3422763 - Rocket Engine Igniter (Model rocket electrical type).pdf
3452471 - Model Boost Glider.pdf
3503333 - Resistance Fuse Wire (Estes igniter - later patent).pdf
3510980 - Propelled Toy Arrangement And Method (Water rocket with side 'chute ejection).pdf
3646887 - Model Rocket And Shock Chord Retainer Therefor.pdf
3650214 - Toy Rocket And Gas Propellant System.pdf
3662685 - Firing Means For A Model Rocket.pdf
3719145 - Recovery Device Ejection Baffle System for Minaiture Rockets.pdf
3721193 - Multi-stage Model Rocekt Assembly (Centuri staging method).pdf
3736836 - Launching Pad Assembly For Model Rockets (Centuri).pdf
3741120 - Metal Foil Ignitor (Centuri).pdf
3785083 - Reaction Toy Arrangement And Method (Multistage water rocket).pdf
3787013 - Foldable Kite And Rocket Launching Means Therefor.pdf
3795194 - Model Rocket (Recessed motor, ducted & finless).pdf
3805355 - Fixture for Model Rocket (Fin jig).pdf
3820275 - Toy Rocket Motor with Pressure-Responsive Means Activated by Propellant Pressure.pdf
3844557 - Rocket Motor Driven Model Racing Vehicle.pdf
3888178 - Model Rocket-Glider.pdf
3903801 - Model Rocket and Recovery Device Therefore.pdf
3912562 - Low Temperature Gas Generator Propellant.pdf
3937191 - Rocket Launcher Including Remotely Releasable Pin Latch (Estes freon rockets).pdf
3942441 - Model Rocket-Glider 2.pdf
3943656 - Two Stage Freon Rocket.pdf
3943656 - Two Stage Rocket with Pressure Responsive Means for Frictionally Engaging Second Stage.pdf
3977120 - Toy Rocket Glider.pdf
4038776 - Rocket Toy (Compressed Air Launched).pdf
4257152 - Centuri Fin Alignment Jig.pdf
4257152 - Fin Assembly System for Model Rockets (Centuri fin jig).pdf
4355577 - Model Rocket Propulsion System.pdf
4374493 - Ultra-light Model Rocket Construction.pdf
4466213 - Aerial Flight Device (Spiral recovery of rocket).pdf
4655137 - Igniter For Model Rocket Engine.pdf
4687455 - Telescoping Body Tube Recovery System Deployment.pdf
4930393 - Model Rocket Launch System.pdf
5004186 - Finlock Alignment Mechanism For Rockets (Aerotech).pdf
5004441 - Estes Model Rocket Car.pdf
5054397 - Parachute Ejection And Recovery System For Rockets (Aerotech's mesh baffle system).pdf
5123355 - Foil Laminated Plastic Reloadable Rocket Motor Igniter (Aerotech Copperheads).pdf
5183960 - Ejection Charge Jettisoned Nose Ballast for Boost Gliders.pdf
5212946 - Reloadable-Modular Solid Rocket Motor.pdf
5267885 - Through the Wall Fins (Centuri).pdf
5312286 - Flying Toy (Balloon propelled lightweight rockets or planes).pdf
5410966 - Centuri Igniter.pdf
5413514 - Helicopter Recovery Rocket.pdf
5507451 - Shutlle Launch System For Model Rocket.pdf
5507541 - Shuttle Launch System for Model Rocket.pdf
5509354 - Centuri Igniter Plug-Holder.pdf
5538453 - Compressed Air Rocket Launcher.pdf
5549497 - Toy Rocket with Velocity Dependent Parachute Release.pdf
5579636 - Pyrotechnic Valve, Igniter And Combustion Preheater For Hybrid Rocket Motors (Aerotech).pdf
5653216 - Compressed Air Rocket & Launcher.pdf
5712446 - Flat-Sided Modle Rocket And Method Therefor.pdf
5780765 - Igniter and Pyrogen Compound.pdf
5785278 - Pressure Dependent Parachute Release Device For Air-Water Rockets.pdf
5881706 - Toy Rocket Launcher (Easy to DIY water rocket hold-down & release system).pdf
5886282 - Electrical Rocket Igniter.pdf
5951354 - Rocket Side Parachute Deployment Hatch.pdf
6022260 - Kit For Constructing A Model Rocket (Accordioning cardboard).pdf
6073086 - Time Of Motion, Speed, And Trajectory Height Measuring Device.pdf
6079202 - Reloadable-Modular Solid Propellant Rocket Motor.pdf
6155173 - Model Rocket Motor Retainer.pdf
6321737B1 - Toy Rocket Launcher (Compressed air rocket).pdf
6361393 - Magnetic Impulse Reaction Driven Toys (Magentic repulsion toy rocket launcher).pdf
6460531B1 - Toy Rocket Launcher (Rotary bellows launcher).pdf
6478648B1 - Toy Rocket with Parachute Hatch Release.pdf
6568170B1 - Baking Soda and Vinegar Plastic Bottle Rocket.pdf
6586170 - Rocket With High Pressure Fueling Module (Water bottle rocket).pdf
6679155B1 - Hydrogen Powered Rocket (Another H2-O2 explosion propelled rocket).pdf
6926576B1 - Rocket with Backwards Gliding Recovery.pdf
6957526 - Pressure Actuated Toy Rocket System (Soda-vinegar plastic bottle rocket).pdf
7252079 - Safe Air-Pressure-Launched Toy Rocket System (Palm closed air valve on ram cylinder).pdf
7537508B1 - Carbide Model Rocket.pdf
7900621B2 - Mass Launch Water Rocket System.pdf
7918419B2 - Rocket Ejection Delay Apparatus And-Or Method.pdf
8006936B1 - Chute Tamer Patent.pdf
8998669B2 - 2-stage Model Rocket (Estes Pro Series II E2X).pdf
9416753B2 - Rocket Delay Apparatuses, Systems And Methods.pdf