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:
Oct. 23, 2001
Filed:
Jan. 22, 1999
David Paul Chastain, Acton, MA (US);
John Darrin Fiegener, Mendon, MA (US);
Roy Alden Thompson, Mattapan, MA (US);
Joseph Robert Geringer, Melrose, MA (US);
Harry West, Lexington, MA (US);
Ari Tao Adler, Cambridge, MA (US);
Maryann Finiw, Boston, MA (US);
Pete Kajuch, Brookfield, WI (US);
Jesse Alan Marcelle, Franklin, WI (US);
Master Lock Company, Milwaukee, WI (US);
Abstract
A padlock is provided with a multi-layer protective metal shell having non-aligned, alternating seams among the various layers, primary and secondary key-operable locks attached to the shackle of the padlock by a drive linkage that will fail before the primary and secondary locks to maintain the integrity of the lock, an ergonomic shape, an offset shackle for facilitating use of the lock in close-quarters applications, and a modular cushioned bumper for attachment to the outside of the lock body that is color-coded to correspond to a key and includes a protective cover over the keyway accessing the lock cylinder which is moveable to facilitate insertion of the key into the padlock.