US3612015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve control system
Assignee: Individual
•
Filing: 1970-03-19
•
Granted: 1971-10-12
•
Expires: 1990-03-19
Abstract
Abstract A variable control mechanism for regulating the length of time and amount of opening of an engine valve during each cycle of operation. The control mechanism includes a closed hydraulic circuit or system including a reciprocal slave cylinder, a reciprocal master cylinder, and control means, which control the allocation of fluid volume within the hydraulic circuit so as to regulate the movement of the slave cylinders. The control means are adjustable so that the amount of regulation can likewise be adjusted.
Inventors
- 👤 Louis A Hausknecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:19
CPC Classifications
F; F01; F01L; F01L9/00; F01L9/10; F01L9/11; F01L9/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
194 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with 1. a reciprocal hydraulic slave cylinder piston 2. a reciprocal hydraulic master cylinder piston 3. a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; D. the internal pressure required to move said slave cylinder piston being higher than the internal pressure required to move said valve control mechanism; and E. means for varying the amount of movement of said reciprocal unit of said valve control mechanism and the duration of time that said engine valve is in said open position during each revoluTion of said crankshaft.
Claim 2
Dependent Claim
194 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with 1. a reciprocal hydraulic slave cylinder piston 2. a reciprocal hydraulic master cylinder piston 3. a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; D. the internal pressure required to move said slave cylinder piston being higher than the internal pressure required to move said valve control mechanism; and E. means for varying the amount of movement of said reciprocal unit of said valve control mechanism and the duration of time that said engine valve is in said open position during each revoluTion of said crankshaft.
Claim 3
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 4
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 5
Dependent Claim
23 words
The improvement of claim 1 further characterized by the presence of means for limiting the extent of opening movement of said engine valve.
Claim 6
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 7
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 8
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 9
Dependent Claim
6 words
a reciprocal hydraulic master cylinder piston
Claim 10
Dependent Claim
153 words
a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; D. the internal pressure required to move said slave cylinder piston being higher than the internal pressure required to move said valve control mechanism; and E. means for varying the amount of movement of said reciprocal unit of said valve control mechanism and the duration of time that said engine valve is in said open position during each revoluTion of said crankshaft.
Claim 11
Dependent Claim
153 words
a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; D. the internal pressure required to move said slave cylinder piston being higher than the internal pressure required to move said valve control mechanism; and E. means for varying the amount of movement of said reciprocal unit of said valve control mechanism and the duration of time that said engine valve is in said open position during each revoluTion of said crankshaft.
Claim 12
Dependent Claim
158 words
a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended position in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; and D. the internal pressure required to move said slave cylinder piston being less than the internal pressure required to move said hydraulic valve control mechanism, whereby the period of time that said engine valve is in said open positions will be extended by the period of time said reciprocal unit of said valve control mechanism is in said extended position during each revolution of said crankshaft.
Claim 13
Dependent Claim
158 words
a valve control mechanism having at least one reciprocal unit, said unit being reciprocal between normal and extended position in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; and D. the internal pressure required to move said slave cylinder piston being less than the internal pressure required to move said hydraulic valve control mechanism, whereby the period of time that said engine valve is in said open positions will be extended by the period of time said reciprocal unit of said valve control mechanism is in said extended position during each revolution of said crankshaft.
Claim 14
Dependent Claim
164 words
a valve control mechanism including first and second reciprocal units that each are reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; and D. the internal pressure required to move such slave cylinder piston being higher than the internal pressure required to move said first reciprocal unit of said hydraulic valve control mechanism; and E. means for varying the amount of movement of said first reciprocal unit of said valve control mechanism whereby the duration of time that said engine valve is in said open position during each revolution of said crankshaft may be varied.
Claim 15
Dependent Claim
164 words
a valve control mechanism including first and second reciprocal units that each are reciprocal between normal and extended positions in response to internal volumetric distribution variations within said hydraulic circuit; B. said hydraulic slave cylinder piston being operatively associated with said engine valve whereby reciprocal movement of said slave cylinder piston will result in reciprocal movement of said engine valve between open and closed positions; C. said hydraulic master cylinder piston being operatively associated with such crankshaft whereby rotation of said crankshaft results in reciprocal movement of said master cylinder piston; and D. the internal pressure required to move such slave cylinder piston being higher than the internal pressure required to move said first reciprocal unit of said hydraulic valve control mechanism; and E. means for varying the amount of movement of said first reciprocal unit of said valve control mechanism whereby the duration of time that said engine valve is in said open position during each revolution of said crankshaft may be varied.
Claim 16
Dependent Claim
39 words
The improvement of claim 1 further characterized by the fact that said means for varying the amount of movement of said reciprocal unit include a cam surface positioned in contact with said reciprocal unit of said valve control mechanism.
Claim 17
Dependent Claim
26 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with
Claim 18
Dependent Claim
26 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with
Claim 19
Dependent Claim
26 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with
Claim 20
Dependent Claim
26 words
In combination with an internal combustion engine having an engine valve and rotating crankshaft, the improvement comprising; A. a closed hydraulic circuit having fluid communication with
Claim 21
Dependent Claim
89 words
The device of claim 5 further characterized by the fact that the internal pressure required to move said second reciprocal unit of said valve control mechanism to its extended position is greater than the internal pressure required to move said slave cylinder piston to its extended position whereby the period of time that said engine valve is in said open position will be extended by the period of time said second reciprocal unit of said valve control mechanism is in said extended position during each revolution of said crankshaft.
References Cited (Backward Citations)
US1696984A
Cited
US1876735A
Cited
US1994223A
Cited
US2011864A
Cited
US2494183A
Cited
US2615438A
Cited
US2829628A
Cited
US3405699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |