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:
Jul. 18, 1978
Filed:
May. 02, 1977
George J Miller, Gastonia, NC (US);
Kenneth G Lytton, Gastonia, NC (US);
James E Donnelly, Gastonia, NC (US);
Fiber Controls Corporation, Gastonia, NC (US);
Abstract
An apparatus for producing an electrical output signal which varies as a function of sliver thickness with a trumpet having a bore through which the sliver passes and a port opening into the bore, and a sensor with a housing defining an inner space sealingly divided by a flexible diaphragm into an upper compartment and a lower averaging compartment. The lower compartment is connected to the trumpet port and to a pressure source via a metering valve having an air escape port. A shaft is fixed for movement vertically with the diaphragm and has a weight on the end within the lower compartment and a magnetic portion in the upper compartment. Vertical movement of the diaphragm caused by a change in back pressure caused in turn by a change in sliver thickness produces an electrical signal in a coil wound about the shaft in the upper compartment as the coil interacts with the magnetic portion.