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:
Aug. 23, 1988
Filed:
Apr. 20, 1987
Applicant:
Inventors:
Jeffrey G Trull, Matthews, NC (US);
David Dixon, Monroe, NC (US);
Assignee:
Yale Security Inc., Monroe, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
70224 ; 70207 ; 70209 ; 70DI / ;
Abstract
The front half of the knob shell and the cylinder are removable from the rest of the lockset without special skill or tools so that cylinder may be replaced or rekeyed. A radial retainer pin in the cylinder assembly extends outward into the lockset shank to hold the cylinder in place. When key is turned counterclockwise, the retainer pin may be depressed inward into a radial recess in the cylinder plug so that cylinder and knob front can be removed from the lockset. A recess in the plug has a spring-biased cover and forces the retainer pin back outward when the pin is released.