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:
Sep. 17, 1991
Filed:
Oct. 11, 1990
Applicant:
Inventor:
William H Crouse, Naples, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
123 9066 ; 1231 / ;
Abstract
A two-cycle, internal combustion engine utilizing a stepper motor to vary tension on an air intake valve. An air pump forces air through the valve but is opposed by forces due to a spring on the valve and pressure in the cylinder. By varying the compression of the spring, the stepper motor causes the valve to open for varied amounts of time thus controlling air flow into the cylinder according to operating conditions. The stepper motor, ignition timing and fuel injection are a controlled by an electronic control system.