B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
138/40
B25D 9/12 (2006.01) B25D 9/14 (2006.01)
Patent
CA 1126619
ABSTRACT OF THE DISCLOSURE An impact tool for mining, demolition work and the like. An energy storing device such as a coil spring, when compressed! accelerates a hammer to deliver a blow to a working tool. The hydraulic cocking mechanism has a compression chamber and a bias chamber. A shaft extends through the compression chamber and into the bias chamber. The shaft has an annular stop attached to it and reciprocally carries a compression sleeve above the annular stop. A bias member extends into the bias chamber. Input hydraulic pressure urges the bias member to press the compression sleeve into seating contact with the annular stop to define a piston. Hydraulic input pressure acting at the same time below the piston urges the shaft upward to cock the spring. At the top of the stroke, ports and passages reduce the pressure difference above and below the piston to allow the spring to force the shaft down for impact. On the downstroke, the compression sleeve and annular stop separate. Ports urge the sleeve back into sealing contact with the annular stop after impact. A re- silient member cooperating with the sleeve and annular stop reduce damage to the sealing surface. -2-
330011
Gowling Lafleur Henderson Llp
Hughes Tool Company
LandOfFree
Impact tool with hydraulic cocking mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impact tool with hydraulic cocking mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact tool with hydraulic cocking mechanism will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-804631