Patent US4827937A successfully refreshed from Google Patents.
US3604454A
Expired / Lapsed
US
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Hydraulic and electric control device
Assignee: LOUIS BERKMAN COMPANY
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Filing: 1969-10-27
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Granted: 1971-09-14
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Expires: 1989-10-27
Abstract
Abstract A hydraulic and electric control device for selectively opening and closing a hydraulic valve includes an actuating device for energizing an electric motor which drives a pump to send liquid through the valve. The control device is provided with a lost motion connection between the valve and the valve actuating device so that the electric motor will not be energized to operate the pump until the valve is in its maximum open position.
Inventors
- 👤 John K Tomko
- 👤 William W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:05
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; B; B60; B60K; B60K23/00; E; E01; E01H; E01H5/00; E01H5/04; E01H5/06; B60K2700/00; B60K2700/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8376; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A control device for operating hydraulic valve means and pump means, said control device including selectively movable valveactuating means for connection with said valve means to selectively move said valve means between first and second positions when said actuating means is selectively moved between third and fourth positions, said control device including movable pump-actuating means for selectively starting and stopping operation of said pump means to supply hydraulic fluid past said valve means, said valve-actuating means including operating means for moving said pump-actuating means to a pump-starting position, said valve actuating means including lost motion means operative subsequent to movement of said valve-actuating means to at least one of said third and fourth positions to free said valveactuating means for movement past said one position to a pumpstarting position, said operating means moving said pumpactuating means to a pump starting position during movement of said valve-actuating means to said pump-starting position from said one position.
Claim 2
Dependent Claim
155 words
A control device for operating hydraulic valve means and pump means, said control device including selectively movable valveactuating means for connection with said valve means to selectively move said valve means between first and second positions when said actuating means is selectively moved between third and fourth positions, said control device including movable pump-actuating means for selectively starting and stopping operation of said pump means to supply hydraulic fluid past said valve means, said valve-actuating means including operating means for moving said pump-actuating means to a pump-starting position, said valve actuating means including lost motion means operative subsequent to movement of said valve-actuating means to at least one of said third and fourth positions to free said valveactuating means for movement past said one position to a pumpstarting position, said operating means moving said pumpactuating means to a pump starting position during movement of said valve-actuating means to said pump-starting position from said one position.
Claim 3
Dependent Claim
118 words
The device of claim 1 wherein said pump-actuating means comprises electrical switch means for selectively energizing electric motor means to drive said pump means, said lost motion means comprising resilient yieldable means interposed between said valve means and said valve-actuating means, said yieldable means having a predetermined stiffness sufficient to remain substantially unyielding during movement of said valve means between said first and second positions by operation of said valve-actuating means between said third and fourth positions, said yieldable means yielding under greater force applied to said valve-actuating means at said one position to free said valve-actuating means for movement beyond said one position to said pump-starting position in which said operating means closes said electrical switch means.
Claim 4
Dependent Claim
61 words
The device of claim 1 wherein said valve-actuating means includes an intermediate actuating position between said third and fourth positions corresponding to an intermediate position of said valve means, and biasing means normally biasing said actuating means to said intermediate position and automatically returning said actuating means to said intermediate position from said third or fourth positions or said pump-starting position.
Claim 5
Dependent Claim
103 words
The device of claim 1 wherein said valve-actuating means includes axially reciprocatable rod means, support means supporting said rod means for axial reciprocating movement, said rod means being movable between said third and fourth positions and said pump starting position, said rod means having an intermediate position between said third and fourth positions, abutment means on said rod means, and spring means acting between said support means and said abutment means and normally biasing said rod means to said intermediate position, said spring means automatically returning said rod means to said intermediate position from said third or fourth positions or said pump-starting position.
Claim 6
Dependent Claim
60 words
The device of claim 4 wherein said pump-actuating means comprises electrical switch means for energizing electric motor means to drive said pump means and said operating means comprises cam means on said rod means, said cam means cooperating with said switch means to close said switch means when said rod means moves beyond said one position to said pump-starting position.
Claim 7
Dependent Claim
114 words
The device of claIm 4 wherein said rod means includes a tubular portion and said valve-actuating means includes shaft means received in said tubular portion, said shaft means and said tubular portion being axially reciprocable relative to one another and defining said lost motion means, and biasing spring means acting between said shaft means and said tubular portion and normally biasing said shaft means and said tubular portion to a predetermined axial position relative to one another, said rod means and said tubular portion being axially shiftable relative to said shaft means against biasing force of said biasing spring means during movement of said rod means to said pump-starting position from said one position.
Claim 8
Dependent Claim
74 words
The device of claim 1 wherein said lost motion means is operative subsequent to movement of said valve-actuating means to either of said third or fourth positions to free said valve-actuating means for movement past either said third or fourth positions to a pump-starting position, said operating means moving said pump-actuating means to a pump-starting position during movement of said actuating means to said pump-starting position from either of said third or fourth positions.
Claim 9
Dependent Claim
61 words
The device of claim 7 wherein said valve-actuating means includes an intermediate actuating position between said third and fourth positions corresponding to an intermediate position of said valve means, and biasing means normally biasing said actuating means to said intermediate position and automatically returning said actuating means to said intermediate position from said third or fourth positions or said pump-starting position.
Claim 10
Dependent Claim
125 words
The device of claim 8 wherein said pump-actuating means comprises electrical switch means for selectively energizing electric motor means to drive said pump means, said lost motion means comprising resilient yieldable means interposed between said valve means and said valve-actuating means, said yieldable means having a predetermined stiffness sufficient to remain substantially unyielding during movement of said valve means between said first and second positions by operation of said valve-actuating means between said third and fourth positions, said yieldable means yielding under greater force applied to said valve-actuating means at either of said third or fourth positions to free said valve-actuating means for movement beyond either said third or fourth positions to said pump-starting position in which said operating means closes said electrical switch means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |