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:
Jul. 11, 1978
Filed:
Dec. 15, 1976
Gustaf Matteus Hultdin, Mala, SE;
Ove Anders Hultdin, Mala, SE;
Hultdins Verkstads AB, Mala, SE;
Abstract
A gripping device comprising two pivotally mounted gripping claws is operated by a double acting hydraulic cylinder. The entire gripping device is pivotally mounted from a crane or the like by means of a universal joint. A member is provided which is operated on by a pressure fluid in the double acting hydraulic cylinder and which serves to temporarily lock the universal joint against pivotal movement to provide a secure and firm connection between the gripping claws and the crane or the like on which the claws are supported. In one embodiment of the invention a rod engages with a ball shaped head to prevent pivotal movement of the universal joint, and in a second embodiment bellows are inflated by hydraulic fluid to prevent movement of a pivotal joint.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile