US3853102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic valve train for combustion engines
Assignee: Individual
•
Filing: 1973-05-31
•
Granted: 1974-12-10
•
Expires: 1993-05-31
Abstract
Abstract A reciprocating piston internal combustion engine is provided and includes poppet-type intake and exhaust valves. The valves are spring-biased under light spring pressure toward their closed positions and opposed electromagnets are operatively associated with each valve for shifting the latter between the open and closed limit positions thereof. Further, hydraulic dampening structure is provided for rapidly retarding the speed of movement of the valves as they approach their limit positions of movement. In this manner, there is a cushioning action on the valves and their seats as well as a substantial reduction in the tendency of the valves to operate in an erratic manner when the engine is operating under high speed conditions.
Inventors
- 👤 C Myers
- 👤 L Harvill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; F01L1/16; F01L9/00; F01L9/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
241 words
In combination with an engine cylinder and an upstanding valve therefor including an elongated stem portion longitudinally shiftable between first and second positions relative to vertically spaced stationary portions of said engine spaced along said stem portion, valve actuating force means operatively associated with said valve for yieldingly biasing said stem portion between said first and second positions, the lower stationary portion of said engine defining an upwardly opening lower cup through the center of which said stem portion extends and the upper stationary portion of said engine defining a downwardly facing upper piston portion through the center of which said stem portion extends, body means carried by said stem portion for movement therewith defining an upwardly opening upper cup portion below said upper stationary portion extending about said stem portion and a downwardly facing lower piston portion centrally through which said stem portion projects, said upper piston portion being loosely at least substantially fully telescopingly seated into said upper cup portion when said stem portion is in said upper position and said lower piston portion being loosely at least substantially fully telescopingly seated in said lower cup portion when said stem portion is in said lower position, said upper and lower piston portions, when said stem portion is in said upper and lower positions, respectively, being fully retracted from telescopic engagement in said upper and lower cup portions, and means operative to direct a discharge of oil into said cup.
Claim 2
Dependent Claim
241 words
In combination with an engine cylinder and an upstanding valve therefor including an elongated stem portion longitudinally shiftable between first and second positions relative to vertically spaced stationary portions of said engine spaced along said stem portion, valve actuating force means operatively associated with said valve for yieldingly biasing said stem portion between said first and second positions, the lower stationary portion of said engine defining an upwardly opening lower cup through the center of which said stem portion extends and the upper stationary portion of said engine defining a downwardly facing upper piston portion through the center of which said stem portion extends, body means carried by said stem portion for movement therewith defining an upwardly opening upper cup portion below said upper stationary portion extending about said stem portion and a downwardly facing lower piston portion centrally through which said stem portion projects, said upper piston portion being loosely at least substantially fully telescopingly seated into said upper cup portion when said stem portion is in said upper position and said lower piston portion being loosely at least substantially fully telescopingly seated in said lower cup portion when said stem portion is in said lower position, said upper and lower piston portions, when said stem portion is in said upper and lower positions, respectively, being fully retracted from telescopic engagement in said upper and lower cup portions, and means operative to direct a discharge of oil into said cup.
Claim 3
Dependent Claim
19 words
The combination of claim 1 wherein said body means comprises a single body structure mounted on said stem portion.
Claim 4
Dependent Claim
39 words
The combination of claim 1 wherein said valve actuating mechanism comprises opposing electromagnets operatively associated with said valve for shifting the latter from said closed position toward said open position and from said open position toward said closed position.
Claim 5
Dependent Claim
56 words
The combination of claim 3 wherein said first position comprises the closed position of said valve, and spring means operably connected between said cylinder and valve yieldingly biasing said valve toward said closed position, the biasing force of said spring means being considerably less than the biasing force of the electromagnet operative to open said valve.
References Cited (Backward Citations)
US548772A
Cited
US555373A
Cited
US1062580A
Cited
US1493357A
Cited
US1471861A
Cited
US1474842A
Cited
US1675954A
Cited
US1857005A
Cited
US2030247A
Cited
US2117434A
Cited
US2329662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |