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. 17, 2015
Filed:
Jun. 17, 2010
Eric K. Larson, Cumberland, RI (US);
Matthew C. Webster, Chepachet, RI (US);
Jian Hong Kang, Sharon, MA (US);
Matthew J. Grimes, East Bridgewater, MA (US);
Eric K. Larson, Cumberland, RI (US);
Matthew C. Webster, Chepachet, RI (US);
Jian Hong Kang, Sharon, MA (US);
Matthew J. Grimes, East Bridgewater, MA (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
An optical-interrupter provides a mechanically integrated electric light source and electric light sensor positioned across a gap to transmit a light beam across the gap that may be interrupted with an opaque vane. The optical-interrupter uses conventional LEDs for both the light source and a light receiver. An integrated circuit comparator may be used to provide an adjustable threshold for the determination of whether the light beam is blocked.