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:
Feb. 22, 1994
Filed:
May. 26, 1992
Richard R Hergert, Rockton, IL (US);
Beloit Technologies, Inc., Wilmington, DE (US);
Abstract
A sheet break detector apparatus is disclosed for detecting a break in a sheet disposed contiguously between an upstream and a downstream felt of a paper machine dryer section. The detector apparatus includes an infrared light emitter disposed adjacent to the sheet disposed between the felts for emitting a beam of infrared light towards the sheet moving contiguously between the felts. An infrared light receiver is disposed on an opposite side of the felts relative to the emitter for receiving the beam in the absence of the sheet, the beam being blocked by the presence of the sheet while the felts permit the passage therethrough of the beam. A transmitter is connected to the receiver for transmitting a signal from the receiver in the absence of the sheet. An alarm is connected to the transmitter such that in the event of sheet break, the beam of light is received by the receiver and the signal is transmitted to the alarm so that an alarm signal is generated, indicating that a sheet break has occurred.