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US3978827A Expired / Lapsed US ⏱️ 0.0 years remaining

Piston engine employing oxygen

Assignee: Individual
•
Filing: 1975-06-23
•
Granted: 1976-09-07
•
Expires: 1995-06-23
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Abstract

Abstract A piston engine employing a flywheel rotor, in lieu of a crankshaft, driven hydraulically by the piston. One end of a plunger is connected to the piston, the other end being slidably disposed in an hydraulic cylinder. In the combustion mode, fuel and oxygen are injected and spark ignited, both by the same variable speed D.C. speed control motor. The piston-driven plunger displaces hydraulic fluid in the cylinder through a high speed orifice to impinge against spaced cavity surfaces formed along the periphery of the flywheel rotor, thereby spinning the rotor. A slide valve is disposed in the orifice and is hydraulically connected to the cylinder so that pressure changes in the cylinder reciprocate the slide valve to provide momentary delay, during pressure build-up, and then release of the cylinder fluid, thereby increasing the fluid velocity. Hydraulic fluid is recirculated during an exhaust stroke wherein the piston is returned by injected air pressure.

Inventors

  • 👤 Marvin E. Wallis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 06:35
CPC Classifications
F; F02; F02B; F02B43/00; F02B43/10; F02B71/00; F02B71/04; F02B75/00; F02B75/04; F02D; F02D39/00; F02D39/10; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 83 words
In a piston engine having a piston carried in a cylinder therefor and defining therewith a combustion chamber, an improved combustion system comprising: means for injecting fuel into said combustion chamber; means for injecting a gas containing oxygen in greater than atmospheric proportion into said combustion chamber; means for spark-igniting said injected fuel and gas; a variable speed electric motor; and means responsive in predetermined sequence to rotation of said electric motor to effect said fuel and gas injections, and said spark ignition.
Claim 2
Dependent Claim 83 words
In a piston engine having a piston carried in a cylinder therefor and defining therewith a combustion chamber, an improved combustion system comprising: means for injecting fuel into said combustion chamber; means for injecting a gas containing oxygen in greater than atmospheric proportion into said combustion chamber; means for spark-igniting said injected fuel and gas; a variable speed electric motor; and means responsive in predetermined sequence to rotation of said electric motor to effect said fuel and gas injections, and said spark ignition.
Claim 3
Dependent Claim 37 words
The piston engine of claim 1 including means for flushing any stray gas from said cylinder rearwardly of said piston and wherein said responsive means is additionally responsive in said predetermined sequence to effect said flushing means.

References Cited (Backward Citations)

US2887993A Cited
US3269321A Cited
US3608529A Cited
US3680305A Cited
US3877450A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-09-07 1980-03-08 1980-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-09-07 1984-03-08 1984-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-09-07 1988-03-08 1988-09-07 $7700.00 Window Closed / Lapsed

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