US 5,632,686 A · Pneumatic device for accelerating and decelerating objects

Abstract

A pneumatic device for accelerating and decelerating one or more objects by introducing compressed gas through an injection valve into the bore of a housing. A piston is slidably mounted in the bore and has a cable attached to one side. The cable travels through an aperture near one end of the housing before passing over a first pulley and then connecting to a carrier which hold the object or objects. The cable is selected to be of a length such that the piston will not exit the open end of the bore, which is opposite to the end near where the aperture is located. This creates the possibility of operating the pneumatic device in two different modes. In the first mode, the pressure of the introduced gas is insufficient to propel the objects past the side of the first pulley that is opposite to the initial location of the objects. The force of the introduced gas accelerates the piston away from the end of the bore near the aperture, subsequently decelerates the piston after it has changed direction, and then begins the cycle again. When a greater pressure is utilized, the gas will accelerate the piston and the objects until they pass the first pulley; then decelerate the objects until they stop beyond the first pulley; subsequently accelerate the objects toward the first pulley, creating a perceived negative gravitational force if the movement is vertical; and then decelerate the objects after they have again passed the first pulley.

Claims26

Dependent claims

A pneumatic device for accelerating and decelerating one or more objects, which comprises:

a housing containing a bore, having an aperture near the first end of said housing, and having the second end of said housing open;
a piston slidably mounted within the bore of said housing;
a cable having the first end of said cable attached to said piston, said cable passing through said aperture before having the second end of said cable connected to the object or objects, and said cable being of such length that the piston will never reach the second end of the housing when the second end of said cable has been attached to the object or objects;
and
an injection valve, located near the first end of said housing, for introducing compressed gas into the bore, which compressed gas expands to accelerate the piston and, consequently, the object or objects and which compressed gas decelerates the piston and, consequently, the object or objects when the piston moves toward the first end of said housing.

2 more elements

A pneumatic device for accelerating and decelerating one or more objects, which comprises:

a housing containing a bore, having an aperture near the first end of said housing, and having the second end of said housing open;
a piston slidably mounted within the bore of said housing;
a carrier available to hold the object or objects;
a cable having the first end of said cable attached to said piston, said cable passing through said aperture before having the second end of said cable attached to said carrier, and said cable being of such length that the piston will never reach the second end of the housing;
an injection valve, located near the first end of said housing, for introducing compressed gas into the bore, which compressed gas expands to accelerate the piston and, consequently, the object or objects and which compressed gas decelerates the piston and, consequently, the object or objects when the piston moves toward the first end of said housing;
a first guide pulley over which the cable passes after having exited the housing through the aperture and before said cable reaches said carrier;
a second guide pulley which is aligned with the first guide pulley and located on the side of said first guide pulley opposite to the initial location of the object or objects to be accelerated so that when said object or objects pass said first guide pulley toward said second guide pulley, the cable will leave the first guide pulley and engage the second guide pulley;
a control valve connected to the housing to release compressed gas and terminate or reduce the acceleration and deceleration;
a propulsive tank for storing the compressed gas, which propulsive tank is connected to the injection valve;
a selective valve, the first end of which selective valve is attached to the propulsive tank to provide a predetermined quantity of compressed gas to the propulsive tank;
a high-pressure tank connected to the second end of the selective valve, which high-pressure tank stores the compressed gas;
and
a compressor connected to the high-pressure tank, which compressor compresses gas and transfers such compressed gas to the high-pressure tank.

10 more elements

Dependencies are inferred from the claim text.

Pneumatic device for accelerating and decelerating objects

Life of this patent

Pneumatic device for accelerating and decelerating objects

Life of this patent

Abstract

Claims26