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:
Jan. 13, 1987
Filed:
Aug. 30, 1985
Rodger T Lovrenich, Santa Teresa, NM (US);
Other;
Abstract
A motorized over center clamp for clamping parts or work pieces utilizes a sequence controller to drive an electric motor and rotate a worm wheel mounted on a worm wheel shaft. A crank rod assembly is rotationally mounted in an off center position on the worm wheel and has curved closed end track portions that ride on the worm wheel shaft. The crank rod assembly is connected to a piston that moves a clamp rod under spring pressure. When the motor has rotated its shaft to the clamped position of the clamp, rotation of the motor shaft is stopped and the clamp is held in position by the spring forcing a mechanical over center condition of the crank rod assembly relative to the worm wheel shaft. The spring length is sensed to determine energy stored in the spring and detect lack of work pieces, work pieces out of position or work pieces that are oversized.