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. 21, 1992
Filed:
Jul. 05, 1990
John W McElroy, Newtown Square, PA (US);
P Leslie Schaumberg, Langhorne, PA (US);
Other;
Abstract
A device for monitoring and verifying the operation of a rotating source, such as a rotating civil defense-type siren being tested by sounding the siren for a short period of time, employs a sensor mounted near the siren. The signal from the sensor is amplified, filtered and converted to a sinusoidal signal of the same frequency as the rotation of the siren. The sinusoidal signal is processed to sense siren turn-on, to determine whether the siren rotates more than a predetermined minimum number of times, and to sense siren turn-off. This information is stored and displayed by the device until it can be inspected by an individual, and can be relayed to a remote site.