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:
Aug. 12, 1980
Filed:
Dec. 07, 1978
Karl A Brandenberg, Chehalis, WA (US);
The Aro Corporation, Bryan, OH (US);
Abstract
A sequential AND fluid logic device has a first input (a) and a second input (b) with a single output (c). An output signal results whenever the input signals are provided sequentially to the first input (a) and the second input (b). The device includes a body member with a throughbore. An actuator is placed into the throughbore for cooperation with a first seat at one end of the throughbore. A diaphragm is arranged in opposed relation to the actuator and cooperates with the actuator. Another seat is cooperative with a poppet member at the opposite end of the throughbore. The area associated with the first seat is less than the active area associated with the diaphragm which, in turn, is less than the area associated with the other seat to assure sequential operation of the device.