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:
Dec. 27, 1977
Filed:
May. 21, 1976
Richard S Knape, Grand Rapids, MI (US);
Joseph Lukas, Grand Rapids, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A fuel injection nozzle assembly includes a nozzle body and a compressible valve therein having a valve head that is normally in loaded abutment against a valve seat in the nozzle body to block the discharge of fuel therefrom, the compressible valve further including a stem extending from the valve head which is fixed at its opposite end to the valve body, the stem including a thin wall, tubular compressible stem portion next adjacent to the valve head and connected thereto by an annular shoulder, the compressible stem portion having an outside diameter substantially greater than the diameter of the valve head with the thin wall of the compressible stem portion being sized so that when fuel, in an annular fuel chamber in the nozzle body encircling the compressible stem portion, at a high fuel pressure acts on the annular shoulder, it will cause a reduction in the normal longitudinal extent of the compressible valve to effect unseating of the valve head from the valve seat and, when the fuel in the fuel chamber is at a reduced pressure, the valve head is seated against the valve seat.