The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1976
Filed:
Apr. 24, 1975
Edwin A Anderson, Houston, TX (US);
Derrel D Webb, Houston, TX (US);
Other;
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.