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:
Mar. 31, 1998
Filed:
Jun. 14, 1996
David L Stevenson, Angola, IN (US);
Rodney Ridenour, Fremont, IN (US);
Robert E Stone, Upland, IN (US);
Craig Hamilton, Waterloo, IN (US);
Transgaurd Industries, Inc., Angola, IN (US);
Abstract
A lock body through bore receives a steel bolt with an array of annular grooves. A locking mechanism secured in the bore has an annular array of locking jaws normally biased engaged with an inserted bolt groove. A jaw spreader has a conical surface for spreading the jaws radially outwardly to disengage the bolt. A locking member normally is radially outwardly of the jaws to preclude such spreading. A spring with a high spring constant, e.g., 300 pound load, axially biases the locking member in the jaw locking position. The spreader and locking member define a locking jaw conical path for radially outwardly releasing the jaws during bolt insertion and for locking the jaws in the opposite bolt withdrawal direction. A manually operated tool with a rotatable cylinder which engages the spreader and including a pair of lock gripping tines provides a high force to the spreader to axial displace it against the locking member spring to release the bolt locking jaws while simultaneously radially outwardly releasing the jaws from the bolt.