Air cushion for pneumatic impact tool

Details Air cushion for pneumatic impact tool Air cushion for pneumatic impact tool

1981-05-04

1983-08-09

Schwadron, Martin P.

Motors: expansible chamber type

Working member position responsive motive fluid control

Exhaust control

92 85B, 92129, 92167, F15B 1522, F01B 1102

Patent

active

043972209

ABSTRACT:
The invention disclosed comprises an air cushion system that utilizes a two-diameter piston and a floating bushing to create an effective air cushion seal which prevents the piston from hitting the barrel bridge.

REFERENCES:
patent: 632262 (1899-09-01), Gunnell
patent: 2960068 (1960-11-01), Becker
patent: 3668975 (1972-06-01), Nelson
Automative Industries, Apr. 15, 1957, p. 169, "Tomkins-Johnson Co. Advertisement".
Hydraulics and Pnematics, Apr. 1981, p. 23, "Parker Fluidpower Advertisement".

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