Abstract: An improved electronic pneumatic paintball gun, with an improved, simplified design incorporating an improved pneumatic hammer, electronic control circuit, pressure regulator, bolt design and cocking system for utilization in paintball guns or related devices. This paintball gun eliminates complex mechanical systems thus providing a consistent operation with low maintenance. The paintball gun utilizes low pressure to minimize damage to paint balls when fired and to the paintball gun's internal parts, plus increase the effective number of shots per tank.

Abstract: An improved pressure regulator for pneumatic guns, with an improved and simplified design incorporating a rotating gas fitting with a gas inlet port; modular construction to allow fitting to different pneumatic guns/air sources/configurations; better pressure output stability at pressures lower than 200 psi; and improved ease of maintenance. There is also a sliding, externally actuatable check valve for pneumatically isolating one pneumatic component of the paintball gun from another pneumatic component.

Abstract: An air chamber that increases the volume of air stored inside a paintball gun. An increased volume of air allows the use of low-pressure/high volume valves in the gun.

Abstract: An air chamber that increases the volume of air stored inside a paintball gun. An increased volume of air allows the use of low-pressure/high volume valves in the gun.

Abstract: A bolt-on air chamber that increases the volume of air stored inside a paintball gun. The increased volume of air allows the use of low pressure/high volume valves in the gun. The bolt-on air chamber also holds the gun together.

Abstract: A locking bar for blocking relative movement of movable parts of a device, particularly providing anti-theft nature to devices such as wheelchairs which would probably be manipulated to a collapsed condition as an incident to a theft of the device; and anti-theft nature is especially provided by the locking bar made to appear to be merely a non-removable axle, yet made shortenable for removal, and thus chair-collapsability by authorized personnel, by an internal sliding operativity which is concealed but which achieves length-changing be engagement of screw-threaded parts to permit manual torque-application to movable parts to achieve the length-changing, the sliding member being a socket whose sliding into or from its length-changed position is effected merely by tilting to achieve positioning by gravity.

Abstract: Apparatus for desoldering, characterized by its suction and pressure effects being achieved by the stroking of a piston in an air cylinder. In the preferred embodiment, the suction effect for drawing in melted solder is forced by a spring, with venting of the pressure previously existing; and the pressure effect for ejecting the melted solder is by the reverse direction stroke of the piston, which not only causes the piston-stroke to pressurize the control tube but to impart energy to the spring for its subsequent suction-stroke operativity.