Ram for powered hammer

Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C173S204000, C173S128000, C173S212000, C173S217000

Reexamination Certificate

active

07445054

ABSTRACT:
A driving mechanism for a powered hammer having a motor and a tool holder includes a ram mounted for reciprocation in a guide tube section. The ram has a radially outwardly projecting sealing portion and an outer circumferential surface that defines a helically shaped vent channel running from a front end portion of the circumferential surface to a rear end portion of the circumferential surface and being interrupted by the sealing portion. A piston is driven in reciprocating motion of the motor such that an air cushion is generated in a space between the ram and the piston to cause an impact on the tool bit by movement of the ram towards the tool bit. The space between the ram and the piston is temporarily connected with ambient air through the helical vent channel and a recess in the wall of the guide tube section after causing the impact on the tool bit.

REFERENCES:
patent: 2880585 (1959-04-01), Badcock
patent: 3034302 (1962-05-01), Akerman
patent: 3507337 (1970-04-01), Chromy
patent: 4512417 (1985-04-01), Kurt
patent: 5873418 (1999-02-01), Arakawa et al.
patent: 6196330 (2001-03-01), Matthias et al.
patent: 6913089 (2005-07-01), Stirm
patent: 2108594 (1983-05-01), None
patent: 2108594 (1983-05-01), None
patent: WO02/22316 (2002-03-01), None
patent: WO0222316 (2002-03-01), None
Search Report—UK Intellectual Property Office for related application GB06033744.4.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Ram for powered hammer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-4043477

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.