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:
Sep. 11, 1979
Filed:
Feb. 10, 1977
James D Logan, Pullman, WA (US);
Guy J Swanson, Spokane, WA (US);
Watchdog, Inc., Spokane, WA (US);
Abstract
A shaft speed and hot bearing indicating apparatus is described having a transducer actuating means mounted on the shaft immediately adjacent the supporting bearing for actuating an electrical transducer to produce an electrical pulse as the transducer actuating means is rotated during each revolution of the shaft. The transducer pulse is processed by an electronic mechanism for multiplying the transducer pulse by sixty by a phase-locked loop network and then counting the number of multiplied pulses occurring during each one second of time interval in a BCD counting mechanism. The total count is displayed each second on a decimal digital display. The apparatus also has means for activating an alarm when the sensed speed falls below a preset speed. The transducer activating means is responsive to the temperature of the bearing and is rendered ineffective when a preset temperature is reached.