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:
Jan. 27, 1998
Filed:
Sep. 18, 1995
Carl J Holdampf, Farmington Hills, MI (US);
C & M Technologies, Inc., Farmington Hills, MI (US);
Abstract
A rotary vane internal combustion engine wherein the section of the rotor housing where ignition takes place is formed in the shape of a circular arc matching the curvature of the rotor, with the balance of the housing periphery being composed of a series of tangent arcs to define an elliptical shape that is continuously concave and has no drastic changes in curvature. The rotor and housing are 'stretched' along their axial dimensions so that each combustion chamber has an axial measurement substantially greater than its circumferential measurement, and each segment of the rotor surface between adjacent vanes has formed therein a plurality of combustion chamber pockets spaced from one another along the axial dimension of the rotor and each provided with a spark plug. Circumferentially separated and separately throttled primary and secondary intake ports are provided to reduce intake throttle losses at low engine loads, and exhaust ports are provided which extend along the axial length of the rotor housing to avoid localized heating of the vane tips. The vanes are of a novel multi-layer construction with spring loaded seals alomg their lines of contact with the stationary engine parts, thereby minimizing intra-chamber pressure leakage.