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:
Nov. 11, 1980
Filed:
Dec. 14, 1978
Applicant:
Inventor:
Donald G Harrison, Glendale, AZ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41D / ; F41D / ; F41D / ;
U.S. Cl.
CPC ...
89153 ; 89173 ; 8918 / ;
Abstract
Automatic or semiautomatic firearms which operate on the blowback principle are equipped to fire more powerful cartridges by the provision of a simple lightweight mechanical recoil movement delaying mechanism which increases the breech opening delay time so that the higher gas pressure in the weapon's firing chamber resulting from the use of more powerful cartridges will have time to drop to a safe level. A second embodiment of the recoil movement delaying mechanism is employed to provide a simple inexpensive locking device for use on automatic or semiautomatic firearms which operate on the locked breech principle.