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:
Mar. 17, 1978
Otmar M Ulbing, Webster, NY (US);
Other;
Abstract
A fluidic actuator includes a retainer block having an internal regulating passage and air inlet and outlet passages interiorly connected to the regulating passage. Obstruction means, preferably a needle valve, partially obstruct the regulating passage, thereby causing a reduction in the pressure of air flowing therethrough. There is a backpressure passage within the needle valve, and this backpressure passage joins the retainer block outlet passage with a sensing cavity. The sensing cavity is covered by a diaphragm which supports a pusher. The air outlet passage is connected to an exit line, and when the end of the exit line is in any manner occluded, a backpressure condition is created within the actuator. This backpressure condition produces movement of the diaphragm, and the diaphragm in turn urges the pusher against a mechanically operated switch. A magnetic insert provides a latching capability.