Percussion device

Details Percussion device Percussion device

1991-01-03

1992-11-10

Yost, Frank T.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Reciprocating drive member connected to pulsing fluid column

173201, 173212, B23Q 5033

Patent

active

051616238

ABSTRACT:
The percussion device which can be used as a hammer drill has a drive piston for driving an overhung percussion piston which is mounted between two air cushions. Depending on the percussion travel of the percussion piston, the percussion air cushion is reversed so that a respective partial quantity is passed around the percussion piston to the opposite side by a central bypass. A no-load bypass is also provided to vent the recoil air cushion to the percussion cushion for a no-load condition. A third bypass bridges the drive piston in the top dead center position to communicate an annular chamber to the rear of the drive piston with the percussion cushion.

REFERENCES:
patent: 1093302 (1914-04-01), Wagner
patent: 1827877 (1931-10-01), Meeker et al.
patent: 1881886 (1932-10-01), Norling
patent: 1891411 (1932-12-01), Greve
patent: 2426409 (1947-08-01), O'Farrell
patent: 3114421 (1963-12-01), McCloud
patent: 4732219 (1988-03-01), Chromy
patent: 4823886 (1989-04-01), Pyatov

Affiliated with

Also associated with

Rating

Percussion device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Percussion device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Percussion device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2287921