Double acting mechanical jar

Details Double acting mechanical jar Double acting mechanical jar

1975-04-24

1976-06-15

Leppink, James A.

Boring or penetrating the earth

Below-ground impact members

With releasable means to detachably retain telescoping...

E21B 110

Patent

active

039630811

ABSTRACT:
A double acting mechanical jar includes an outer housing and a mandrel extending longitudinally thereof with means connecting the mandrel and housing for relative longitudinal movement therebetween while inhibiting relative rotation therebetween. First and second one-way acting sleeve collet means are carried in longitudinal spaced relation by the housing and first and second boss collet means are mounted on the mandrel and the first and second one-way acting sleeve collet means and the first and second boss collet means each include a plurality of annular ridges thereon with the annular ridges on the sleeve and boss collet means being arranged in unequal, longitudinal spaced increments relative to the other annular ridges on each the sleeve and boss collet means respectively so that as the boss collet is moved into engagement with the one-way acting sleeve means only one of the annular ridges on the sleeve and boss collet means engages and thereafter disengages as the boss collet is moved into engagement with the one-way acting sleeve means until the boss collet means and one-way acting sleeve means are fully engaged whereupon each of the annular ridges on said sleeve and boss collet means are engaged.

REFERENCES:
patent: 2013127 (1935-09-01), Bowen
patent: 2059540 (1936-11-01), Stephan
patent: 2978048 (1961-04-01), Walker
patent: 3050131 (1962-08-01), Siracusa et al.
patent: 3208541 (1965-09-01), Lawrence
patent: 3685598 (1972-08-01), Nutter
patent: 3685599 (1972-08-01), Kisling
patent: 3880249 (1975-04-01), Anderson

Affiliated with

Also associated with

Rating

Double acting mechanical jar does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1689548