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:
Mar. 06, 1990
Filed:
Apr. 29, 1987
Applicant:
Inventor:
Donald W Spencer, Monroe, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; G08B / ;
U.S. Cl.
CPC ...
340539 ; 340573 ; 340304 ; 340502 ; 34082545 ;
Abstract
A safety communications system for personel employed in hazardous areas is responsive to motion sensing, as well as to worker initiated check-in signals, for registering an alarm at a central station after an absence of input for a predetermined time period. Confirmation of check-in and emergency transmission is also provided to the worker as assurance of system operation and to provide a local alarm to guide rescue efforts.