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:
Aug. 03, 1982
Filed:
Nov. 10, 1980
Jack T Gregory, Petaluma, CA (US);
Other;
Abstract
A hydraulic force-delivering hand tool, such as a cable crimper, comprising a body with a large axial bore at one end forming a cylinder. A piston is slidable in the cylinder and has a nodular mass at the outer end to drive against a member to be crimped. A plunger pumps a quantity of fluid past a transfer one-way check valve and into the cylinder, to drive the piston forward a small increment each stroke. When the piston passes through its full predetermined stroke to effect a complete crimp, interengaging means on the transfer check valve and on the piston, lift the transfer check valve from its seat to prevent further travel and to relieve fluid back to the transfer chamber. A button may then be pressed to unseat a relief check valve, to relieve the cylinder to the reservoir.