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:
Apr. 05, 1977
Filed:
Oct. 04, 1974
Applicant:
Inventors:
James S Adams, Batesville, IN (US);
Charles W Cutler, Batesville, IN (US);
Assignee:
Hill-Rom Company, Inc., Batesville, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 51 ; 340255 ;
Abstract
Ground-test device indicating when the connection to ground has become lost and passing no more than about 12 microamperes of current into the ground system. The device also develops an indication when the wiring from the source of a.c. power suffers from reversed polarity or when the common, or neutral, connection floats appreciably above ground. When no abnormality exists, the circuit introduces less than about 0.6 microamperes to ground.