IP Library Granted Patent US 8,485,101
Granted Patent B2
US 8,485,101 · App. 13/155,635 · Granted Jul 16, 2013

Reusable grenade

Inventor: Scott Frank (Provo, UT)
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Quick Facts
Patent No.
US 8,485,101
App. No.
13/155,635
Granted
Jul 16, 2013
Kind
B2
Abstract

A reusable, pneumatic paint grenade that includes a dashpot timing mechanism for sudden release of compressed air that ruptures a frangible housing to disperse a dyed liquid or airsoft pellets after the paint grenade is thrown. The dashpot further comprises a plunger located in a cylindrical body. A lever in contact with the plunger of the dashpot forces the plunger downward to puncture a cartridge of compressed air with a sharp structure disposed between the plunger and the cartridge. The compressed air is prevented from escaping while the sharp structure remains in the cartridge. Once the lever is released, the plunger is forced into substantially its original position by a biasing mechanism and the force exerted by the air pressure within the cartridge. The cylindrical body can be filled with a viscous liquid to further slow movement of the plunger.

Claims (30)

1. A paint grenade comprising:

an upper member comprising a dashpot delay mechanism;

a housing operably connected to the upper member, the housing having a reservoir for holding a liquid or airsoft pellets therein;

a sufficiently sharp structure to puncture a cartridge of compressed air when the cartridge of compressed air is disposed in the housing;

wherein the dashpot delay mechanism is disposed in communication with the upper member and the housing;

wherein compressed air is introduced into the housing of the grenade to rupture the housing and disperse the liquid or non-metallic pellets in the reservoir in an arc of about 120 degrees; and

wherein the upper member and the dashpot delay mechanism are reusable after the housing is ruptured.

2. The paint grenade of claim 1 , wherein the dashpot delay mechanism is configured to releasably engage the cartridge of compressed air.

3. The paint grenade according to claim 1 , wherein the dashpot delay mechanism is comprised of a cylindrical housing and a plunger.

4. The paint grenade according to claim 3 , wherein the plunger of the delay mechanism further comprises a first end and a second end, and wherein the sharp structure is disposed adjacent the second end of the plunger.

5. The paint grenade according to claim 4 , wherein the second end of the plunger prevents release of compressed air from a cartridge of compressed air prior to the sharp structure exiting the cartridge.

6. The paint grenade of claim 3 , wherein the delay mechanism includes an upper section and a lower section, and wherein the upper section is removably connected to the lower section.

7. The paint grenade according to claim 3 , wherein the delay mechanism includes a viscous liquid inside the cylindrical body.

8. The paint grenade according to claim 3 , wherein the cylindrical body is comprised of an upper compartment, a middle compartment and a lower compartment, and wherein a viscous liquid is located within the upper compartment and lower compartment.

9. The paint grenade according to claim 1 , wherein the housing is releasably attached to the dashpot delay mechanism.

10. The paint grenade according to claim 9 , further comprising a plurality of housings which are releasably attached to the dashpot delay mechanism, wherein each housing of the plurality of housings have a reservoir for holding a liquid or non-metallic pellets therein.

11. The paint grenade according to claim 1 , wherein the delay mechanism includes at least one safety mechanism.

12. A method of forming a paint grenade, the method comprising:

selecting an upper member;

releasably connecting a dashpot delay mechanism to the upper member;

operably connecting a housing to the upper member;

attaching a cartridge of compressed air to the dashpot delay mechanism and disposing a structure adjacent the cartridge of compressed air wherein the structure is sufficiently sharp to puncture the cartridge of compressed air;

wherein the dashpot delay mechanism is disposed in communication with the upper member and the housing;

wherein the upper member and the dashpot delay mechanism are configured for rapid reuse.

13. The method of claim 12 , wherein the method comprises connecting the dashpot delay mechanism to the upper member, and wherein the dashpot delay mechanism includes a cylindrical body and a plunger.

14. The method of claim 13 , wherein the method further comprises the step of surrounding the plunger with a viscous liquid.

15. The method of claim 13 , further comprising the step of attaching a cartridge of compressed air to the dashpot delay mechanism and wherein the plunger of the delay mechanism has a first end and a second end wherein the second end of the plunger prevents release of compressed air from a cartridge of compressed air.

16. The of claim 13 , wherein the cylindrical body is comprised of an upper compartment, a middle compartment and a lower compartment, and wherein a viscous liquid is located within the upper compartment and lower compartment.

17. The method of claim 12 , wherein the method comprises threadably connecting the housing to the upper member.

18. The method of claim 12 , wherein the compressed air from the cartridge is directed into the housing to rupture the housing and disperse a dyed liquid or non-metallic pellets.

Continuity (2)
Provisional Application 61352864 · Jun 9, 2010
Related Publication 20110306446A1 · Dec 15, 2011