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:
Dec. 10, 1991
Filed:
Jan. 28, 1991
Jon M Smallegan, Colorado Springs, CO (US);
Frederick M Hensley, Colorado Springs, CO (US);
Schlage Lock Company, San Francisco, CA (US);
Abstract
An interchangeable lock core cylinder for use with a lock housing has a cylindrical body with a pin chest attached and parallel thereto, a rotatable key plug inserted within the cylindrical body, provision for capturing the core in the housing, and a mechanism within the key plug for selectively operating the capturing provision. This mechanism allows rapid insertion, removal, and replacement of lock core cylinders using an appropriate control key. When installed, the core cylinder is locked into engagement with the housing and has a positive latching provision so that it cannot be removed without use of the control key.