Handheld tool for breaking up rock

Details Handheld tool for breaking up rock Handheld tool for breaking up rock

2006-07-04

2006-07-04

Johnson, Stephen M. (Department: 3641)

Ammunition and explosives

Blasting

Contained blasting charge

C102S322000, C299S013000, C042S108000, C086S020150

Reexamination Certificate

active

07069862

ABSTRACT:
A tool (12) has a body (14) with a barrel (18) having opposing threaded and fitted openings (30and28). An actuator pin tube (26), for slidably engaging an actuator pin (38) having a tip (40) opposing a retention head (42), extending from the fitted opening (30). A spring assembly (24), disposed in the barrel (18), has a hammer guide (44) engaged in the threaded opening (28) with a hammer (46) slidably engaged therein, a handle mechanism (55) disposed at one end and a spring retainer (52) disposed adjacent the other end of the hammer (46) before a hammerhead (51), and a spring (54) engaged between the hammer guide (44) and the spring retainer (52). A release mechanism (56) engages the hammer (46). A kit (108) containing the tool (12) and a method of operating the tool (12) involving drilling and cleaning a borehole, inserting a cartridge and tool therein, and detonating the load remotely using a pull cord.

REFERENCES:
patent: 1503420 (1924-07-01), Hutton
patent: 1585664 (1926-05-01), Gilman
patent: 2058099 (1936-10-01), Osgood
patent: 2257270 (1941-09-01), McCullough
patent: 2296504 (1942-09-01), Crater
patent: 2587243 (1952-02-01), Sweetman
patent: 3208381 (1965-09-01), Kihlstrom et al.
patent: 3721471 (1973-03-01), Bergmann et al.
patent: 4037537 (1977-07-01), Thorsell et al.
patent: 4306628 (1981-12-01), Adams, Jr. et al.
patent: 4508035 (1985-04-01), Mashimo et al.
patent: 4669783 (1987-06-01), Kolle
patent: 4900092 (1990-02-01), Van Der Westhuizen et al.
patent: 5060573 (1991-10-01), Montgomery et al.
patent: 5069130 (1991-12-01), Buckley et al.
patent: 5098163 (1992-03-01), Young, III
patent: 5308149 (1994-05-01), Watson et al.
patent: 5474364 (1995-12-01), Ruzzi et al.
patent: 5573307 (1996-11-01), Wilkinson et al.
patent: 5611605 (1997-03-01), McCarthy
patent: 5705768 (1998-01-01), Ey
patent: 5765923 (1998-06-01), Watson et al.
patent: 5789694 (1998-08-01), Mey
patent: 5803550 (1998-09-01), Watson et al.
patent: 5803551 (1998-09-01), McCarthy
patent: 5900578 (1999-05-01), Wathen
patent: 6145933 (2000-11-01), Watson et al.
patent: 6148730 (2000-11-01), Watson
patent: 6318272 (2001-11-01), Mey
patent: 6339992 (2002-01-01), Watson
patent: 6375271 (2002-04-01), Young, III

Affiliated with

Also associated with

Rating

Handheld tool for breaking up rock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Handheld tool for breaking up rock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handheld tool for breaking up rock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3535142