# US 4,392,458 A · Internal combustion engine with double oscillating pistons

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- Number: US 4,392,458 A
- Document ID: US4392458A
- Status: Granted
- Kind: A
- Application number: 06/186,120
- Filed: 1980-09-11
- Granted: 1983-07-12
- Earliest claimed: 1980-09-11
- Inventors: Henry E. Gummeringer
- Web page: https://patentgrep.com/patent/US4392458A

## CPC

- F01C 11/002: {of similar working principle}
- F02B 53/00: Internal-combustion aspects of rotary-piston or oscillating-piston engines (internal-combustion aspects of rotary pistons or outer members for co-operation therewith F02B55/00)
- Y02T 10/12: Improving ICE efficiencies
- Y10T 74/18288: Cam and lever
- Y10T 74/2101: Cams
- Y10T 74/2107: Follower
- F01C: ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F02B53/00, F02B55/00)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

This disclosure is directed to an internal combustion engine having a plurality of double oscillating pistons disposed around the interior of the housing, each side of each oscillating piston having a cam arm which applies the force of combustion to a cam gear. The cam gear has a cam surface on its exterior which engages the cam arm and a ring gear on its interior which engages a plurality of planetary gears which in turn drive a drive shaft having a sun gear.

## Claims

### Claim 1

An oscillating piston internal combustion engine comprising:
a. a housing forming within a plurality of working chambers, and pivotally supporting between adjacent working chambers an oscillating piston, so that each side of each oscillating piston operates in one of the working chambers, and each said working chamber having therein a standard spark plug, and a fuel injection port, and an air input port and an exhaust port; and
each side of each oscillating piston having a cam arm having an irregular nearly circular shaped cam surface,
and a cam gear having an irregular exterior cam surface with a plurality of lobes, and said cam gear having means for engaging a drive shaft, and
whereby when a combustible mixture is exploded in one working chamber on one side of an oscillating piston, the expanding gases from said explosion drive that side of the oscillating piston toward the cam gear, and the other side of the oscillating piston, having been exhausted and recharged with fresh air compresses the air therein and receives fuel by injection, and
wherein each side of the oscillating piston as it travels toward the cam gear near the limits of its travel exposes air input ports and exhaust ports, and
an air input blower which blows fresh air into the working chamber through the air input port and an exhaust blower which removes exhaust gases from the working chamber through the exhaust port, and
wherein the housing between the working chambers and between the pistons has mounted therein a spring loaded oiler wick, and
wherein the exhaust blower and the air input blower are driven from the driveshaft, and
wherein the injection of fuel and the ignition spark for each working chamber are timed.

### Claim 2 (depends on 1)

The engine of claim 1 wherein the means for engaging the cam gear with the drive shaft is to rigidly affix the cam gear to the drive shaft with a key.

### Claim 3 (depends on 1)

The engine of claim 1 wherein the means for engaging the cam gear with the drive shaft comprises the cam gear having on its inner surface a ring gear which mateably engages a plurality of planetary gears, said planetary gears mateably engaging a sun gear which is rigidly affixed to the drive shaft with a key, and a breaking means to control the rotation of the planetary gears about the sun gear.