WALLACE C KNAPP
Engineers in Baltimore, MD
License number
Pennsylvania PE006201E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Baltimore, MD 21286
Pennsylvania
Pennsylvania
Professional information
Reciprocatory Air Motor With Cushioning Pistons
US Patent:
4492147, Jan 8, 1985
Filed:
Dec 30, 1983
Appl. No.:
6/567164
Inventors:
Wallace C. Knapp - Towson MD
Assignee:
Knapp Pneumatics, Inc. - Baltimore MD
International Classification:
F01L 2506, F01B 1102
US Classification:
91306
Abstract:
A reciprocatory air motor has a main plunger valve the position of which controls the flow of air to opposite sides of a main motor piston. Positioning of the plunger valve is itself controlled by a pair of cushion pistons carried on the piston rod of the motor. A space between the cushion pistons is used for the compression of air to effect absorption of the kinetic energy of the moving parts of the motor at opposite ends of the stroke.