Patent US3791354A successfully refreshed from Google Patents.
US3791354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine charge timing system
Assignee: Individual
•
Filing: 1972-12-12
•
Granted: 1974-02-12
•
Expires: 1992-12-12
Abstract
Abstract In a system for opening and closing poppet valves in an internal combustion engine, a pulser rotates at one-quarter engine speed to excite magnetic pickups which control the opening and closing of poppet valves through bistable multivibrators, amplifiers and solenoids which control hydraulic pilot valves to selectively open hydraulic lines for driving the poppet valve open or closed and holding the poppet valve in that condition for a predetermined time. Four pickups are associated with a pulser station for one cylinder. Two pickups control the exhaust poppet valve, and two pickups control the intake valve. The exhaust opening pickup and the intake valve closing pickup respectively are advanced and retarded with increased speed. The hydraulic pilot valve system may be cascaded to provide sufficient power to drive the poppet valves.
Inventors
- 👤 C Lorentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:31
CPC Classifications
F; F01; F01L; F01L9/00; F01L9/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
183 words
Internal combustion engine charge timing apparatus comprising an axle, a rotary support for the axle, rotatable means mounted for unidirectional rotation on the axle, drive means connected to the rotatable means and to an engine, whereby a definite rotational relationship is established between the engine and the rotatable means, first communication means mounted in the rotatable means, a first pair of second communication means positioned with a 180* arc with respect to the rotatable means and positioned adjacent the rotatable means for communicating upon cyclic juxtaposition of the first communication means with the second communication means, mounting means connected to the rotary support and connected to the second communication means, whereby the second communication means may be moved with respect to each other and may be arcuately moved within the 180* arc, speed responsive means operatively connected to the engine and to the second communication means for moving the second communication means in the arc upon variation of engine speed, and charge controlling means operatively connected to the second communication means for controlling engine charge upon the communicating of the second communication means.
Claim 2
Dependent Claim
183 words
Internal combustion engine charge timing apparatus comprising an axle, a rotary support for the axle, rotatable means mounted for unidirectional rotation on the axle, drive means connected to the rotatable means and to an engine, whereby a definite rotational relationship is established between the engine and the rotatable means, first communication means mounted in the rotatable means, a first pair of second communication means positioned with a 180* arc with respect to the rotatable means and positioned adjacent the rotatable means for communicating upon cyclic juxtaposition of the first communication means with the second communication means, mounting means connected to the rotary support and connected to the second communication means, whereby the second communication means may be moved with respect to each other and may be arcuately moved within the 180* arc, speed responsive means operatively connected to the engine and to the second communication means for moving the second communication means in the arc upon variation of engine speed, and charge controlling means operatively connected to the second communication means for controlling engine charge upon the communicating of the second communication means.
Claim 3
Dependent Claim
66 words
The apparatus of claim 1 wherein the rotatable means comprises an electrical insulating cylinder with electrical conductors extending radially through the cylinder from a ground and terminating in the cylinder surface in an exposed conductive surface and wherein the second communicating means comprise electrically conductive brushes and wherein the communicating of the second communication means comprises ground of the brushes through the first communication means conductors.
Claim 4
Dependent Claim
14 words
The apparatus of claim 2 wherein the electrical conductors extend diametrically through the cylinder.
Claim 5
Dependent Claim
56 words
The apparatus of claim 1 wherein the first communication means comprise magnetic materials mounted in the rotatable means and wherein the second communication means compRise coils spaced slightly from outer surfaces of the first communication means and wherein the communicating comprises establishing electrical currents in the coils by virtue of the magnetic means passing the coils.
Claim 6
Dependent Claim
115 words
The apparatus of claim 1 wherein the speed responsive means comprise fluid propulsion blades mounted on the rotatable means and fluid directing means mounted adjacent the blades and a movable fin mounted adjacent the fluid directing means, guide means connected to the fin for guiding movement of the fin in response to deflection by fluid, and connecting means connecting the fin and the second communicating means for movement with the fin, and spring means connected to the fin for urging the fin in a direction against fluid pressure from the fluid directing means, whereby the fin moves to balance forces from fluid pressure and from the spring means and thereby moves the second communication means.
Claim 7
Dependent Claim
55 words
The apparatus of claim 1 wherein the speed responsive means comprises a vacuum chamber, a diaphragm connected to the vacuum chamber and a source of vacuum connected to the vacuum chamber, a connection means connected to the diaphragm and to the second communication means for moving the second communication means upon movement of the diaphragm.
Claim 8
Dependent Claim
30 words
The apparatus of claim 1 further comprising a bistable multivibrator having an input connected to the second communication means and solenoid actuating means connected to an output of the multivibrator.
Claim 9
Dependent Claim
99 words
The apparatus of claim 7 further comprising a pilot valve connected to the solenoid, a source of fluid pressure connected to the pilot valve, a fluid actuator connector to the pilot valve whereby the actuator is driven in one direction when the solenoid means is in a first position corresponding to a first bistable condition of the multivibrator, and wherein the actuator is driven in a second opposite direction when the pilot valve is moved to a second position by the solenoid means moving to a second position, which corresponds to a second stable condition of the bistable multivibrator.
Claim 10
Dependent Claim
47 words
The apparatus of claim 8 further comprising a second valve connected to the actuator and to the source of fluid pressure and a second relatively large actuator connected to the second valve for movement between first and second positions in response to movement of the first actuator.
References Cited (Backward Citations)
US1096955A
Cited
US1705663A
Cited
US1735439A
Cited
US3220392A
Cited
US3675630A
Cited
US3738337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |