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:
Jan. 31, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Paul Petzl, St. Vincent de Mercuze, FR;
Pierre Petzl, Crolles, FR;
Assignee:
Establissements Petzel, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21L / ;
U.S. Cl.
CPC ...
362187 ; 200 60 ; 362103 ; 362105 ; 362204 ; 362205 ; 362206 ; 362277 ;
Abstract
An electric lamp with a parabolic reflector in a threaded collar, provided with a device for adjusting the focus by relative displacement between the bulb and the reflector which occurs when turning the collar on its threads between first and second adjusting positions. The device furthermore controls a switch housed within the casing for the device. The device is particularly applicable as an electric headlamp for mountain-climbers or spelunkers.