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:
Oct. 11, 1994
Filed:
Dec. 14, 1990
Applicant:
Inventor:
Barry S Pearlman, Chesterfield, MO (US);
Assignee:
Public Safety Equipment, Inc., St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340468 ; 340471 ; 340472 ; 340331 ;
Abstract
Apparatus and method for controlling a signal device for energization by an electrical source. The apparatus includes circuitry for producing digital cycles on an output line wherein each digital cycle includes a sequence of pulses and spaces, each cycle having at least two pulses that differ in duration and at least two spaces that differ in duration. The apparatus also includes circuitry connected to the output line and responsive to the circuitry for producing the digital cycles for applying electrical energization from the electrical source to the signal device in accordance with the pulses in the digital cycles.