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. 05, 1985
Filed:
Jun. 14, 1982
William F Bleeke, Vandalia, MI (US);
James E Greve, South Bend, IN (US);
CTS Corporation, Elkhart, IN (US);
Abstract
A leak tight position sensor or transducer (10) comprising a housing (12) having a cavity (32) with an opening (14) in one side and an aperture (16, 26) in each end of the housing (12). Located within the cavity (32) is a drive block (34) having bushing (36) with a threaded aperture (37) receiving the threaded end (42) of a shaft (40) made of a permanent magnet material. The threaded end (42) of the magnetic shaft (40) has a flat (44) and the other end (46) of the shaft is journalled in an aperture (16) of the housing (12). A metallic contactor (38) attached to the drive block (34) wipably engages an electrical circuit (54) printed on the interior surface (52) of a ceramic substrate (50) proportioned to seal the housing opening (14). Electrical wires (60) inserted through openings (58) in the substrate (50) are soldered to the circuit (54) and not only complete electrical connection and securement of the wires (60) to the circuit (54), but seal the openings (58) in the ceramic substrate (50). The ceramic substrate (50) is joined to the housing by an adhesive (70) which provides a leak tight sealing of the perimeter of the ceramic substrate (50) to the housing opening (14). The transducer (10) can be attached to a rotary diesel injection pump whereby fuel may enter into the interior of the housing (12) without leakage therefrom, and can be internally calibrated while attached to the pump.