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. 29, 1978
Filed:
Jun. 27, 1977
Applicant:
Inventor:
Marvin E Roberts, Reno, NV (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
70403 ; 70366 ;
Abstract
A key construction for use with a rotary disc-tumbler lock wherein the key has a shank portion and a bow or other rotating means on one end thereof. The key shank is formed with a vee-groove longitudinally thereof which vee-groove permits insertion and retraction of the key shank into the lock without disturbing the position of the tumblers in the lock. Further, the shank of the key being formable with warding grooves extending along the shank.