US3739807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valving arrangement
Assignee: Motors Liquidation Co
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Filing: 1972-05-27
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Granted: 1973-06-19
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Expires: 1992-05-27
Abstract
Abstract The drawings illustrate an improved dual-rate trimmer-valve for use with clutch and/or brake arrangements of an automatic transmission, wherein a valve element is first moved under a low fluid pressure to a clutch-regulating position while the clutch chamber is being filled with fluid. In one embodiment the valve element moves against a light spring force and in another embodiment such movement is unopposed. An orifice in an end wall of the valve element permits the fluid to continuously flow to an adjacent chamber to progressively move an initially adjacent plug member away from the valve element toward a stop member, against a predetermined spring force resulting from two oppositely disposed springs. Once the plug member has moved a predetermined distance and downshifting, for example, is accomplished, one of the two springs becomes ineffective, and the regulating effect of the remaining spring on the plug member and back through the fluid medium to the valve element and, hence, on the clutch or brake engagement process during upshifting, for example, increases thereafter at a slower rate than was the case while the two springs were exerting a combined varying influence on the valve element, until contact is made with the stop member. At this point, full clutch engagement is complete, and, due to a differential area feature on the valve element and/or an adjacent spring, the valve element is snapped back to the initial nonregulating position.
Inventors
- 👤 J Landrus
- 👤 A Norris
- 👤 J Edmunds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F15; F15B; F15B11/00; F15B11/02; F15B11/022; F16D25/00; F16D25/12; F16D25/14; F16H; F16H61/00; F16H61/04; F16H61/06; F16H61/065; F15B2211/00; F15B2211/70; F15B2211/775; F16D2048/0209; F16D2048/0221; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7781; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7925
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
287 words
A regulating valve arrangement comprising a valve housing, a valve element slidably mounted in said housing, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in said housing adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position while said fluid continuously flows through said orifice, a plug member slidably mounted in said housing downstream of said valve element and movable away from said valve element as a result of the volume of said fluid flowing through said orifice, first and second oppositely disposed springs movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, a stop member for stopping said plug member after movement thereof through a predetermined distance, and return means associated with said valve element for aiding the pressure of said fluid thereon to cause said valve element to return to a nonregulating position once said plug member abuts against said stop member.
Claim 2
Dependent Claim
287 words
A regulating valve arrangement comprising a valve housing, a valve element slidably mounted in said housing, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in said housing adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position while said fluid continuously flows through said orifice, a plug member slidably mounted in said housing downstream of said valve element and movable away from said valve element as a result of the volume of said fluid flowing through said orifice, first and second oppositely disposed springs movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, a stop member for stopping said plug member after movement thereof through a predetermined distance, and return means associated with said valve element for aiding the pressure of said fluid thereon to cause said valve element to return to a nonregulating position once said plug member abuts against said stop member.
Claim 3
Dependent Claim
48 words
The regulating valve arrangement described in claim 1, wherein said return means includes differential end areas formed on said valve element, with the larger end area thereof being on the side of said valve element adjacent said plug member, and a spring abutting against said larger end area.
Claim 4
Dependent Claim
49 words
The regulating valve arrangement described in claim 1, and a spring retainer member secured in said valve housing intermediate said valve element and said plug member, an unrestricted opening formed in said spring retainer member, and a third spring mounted between said valve element and said spring retainer member.
Claim 5
Dependent Claim
76 words
The regulating valve arrangement described in claim 3, wherein said first of said first and second oppositely disposed springs abuts at one end thereof against said fixed spring retainer member and at the other end thereof against one side of said movable plug member, and said second spring abuts at one end thereof against the other side of said movable plug member and at the other end thereof against an end wall of said valve housing.
Claim 6
Dependent Claim
38 words
The regulating valve arrangement described in claim 4, and an accumulator mounted on said valve housing, an opening formed in said valve housing communicating between said accumulator and the space intermediate said plug member and said valve element.
Claim 7
Dependent Claim
45 words
The regulating valve arrangement described in claim 1, wherein said return means includes a spring mounted between said orifice-end of said valve element and a spring retainer secured in said valve housing, said spring retainer being mounted intermediate said valve element and said plug member.
Claim 8
Dependent Claim
124 words
The regulating valve arrangement described in claim 1, wherein said plug member is immediately adjacent said orifice-end of said valve element, a pin member secured to an end wall of said valve housing, a retainer slidably mounted around said pin member, a cylindrical wall formed on the side of said retainer opposite said housing end wall, and a flange formed on the open end of said cylindrical wall, said first of said first and second oppositely disposed springs is mounted in said cylindrical wall at times being compressed between said movable retainer and said movable plug member, and said second spring is mounted around said cylindrical wall and said stop member while compressed between said flange and said end wall of said valve housing.
Claim 9
Dependent Claim
41 words
The regulating valve arrangement described in claim 1, and a pressure regulator, a second source of fluid under constant pressure in said pressure regulator and a line communicating said fluid between said pressure regulator and the chamber housing said second spring.
Claim 10
Dependent Claim
358 words
A regulating valve arrangement comprising a valve housing having a two-diameter bore formed therein, a two-diameter valve element slidably mounted in said two-diameter bore, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in the larger bore portion of said two-diameter bore adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position with respect to said exhaust port while continuously flowing through said orifice, a plug member slidably mounted in said larger bor portion downstream of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, an open-ended spring retainer secured in said larger bore portion intermediate said orifice and of said valve element and said plug member, a separate spring mounted between said retainer and said valve element, first and second springs mounted on opposite sides of said plug member and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second sPring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said plug member after movement thereof through a predetermined distance, said two-diameter valve member being caused to return to a nonregulating position once said plug member abuts against said stop member due to the pressure of said fluid on the two different end areas thereof and/or the force of said separate spring on the orifice-end of said valve element.
Claim 11
Dependent Claim
358 words
A regulating valve arrangement comprising a valve housing having a two-diameter bore formed therein, a two-diameter valve element slidably mounted in said two-diameter bore, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in the larger bore portion of said two-diameter bore adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position with respect to said exhaust port while continuously flowing through said orifice, a plug member slidably mounted in said larger bor portion downstream of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, an open-ended spring retainer secured in said larger bore portion intermediate said orifice and of said valve element and said plug member, a separate spring mounted between said retainer and said valve element, first and second springs mounted on opposite sides of said plug member and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second sPring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said plug member after movement thereof through a predetermined distance, said two-diameter valve member being caused to return to a nonregulating position once said plug member abuts against said stop member due to the pressure of said fluid on the two different end areas thereof and/or the force of said separate spring on the orifice-end of said valve element.
Claim 12
Dependent Claim
337 words
A regulating valve arrangement comprising a valve housing, a sleeve member press-fitted in said housing, a valve element slidably mounted in said housing adjacent said sleeve member, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure through said sleeve member to the end of said valve element, an exhaust port formed in said housing adjacent the opposing faces of said sleeve member and said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position slightly apart from said sleeve member while continuously flowing through said orifice, a plug member slidably mounted in said housing downstream of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, an open-ended spring retainer secured in said housing intermediate said orifice-end of said valve element and said plug member, a separate spring mounted between said retainer and said valve element, first and second springs mounted on opposite sides of said plug member and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said plug member after movement thereof through a predetermined distance, said separate spring serving to cause said valve element to return to a nonregulating position once said plug member abuts against said stop member.
Claim 13
Dependent Claim
337 words
A regulating valve arrangement comprising a valve housing, a sleeve member press-fitted in said housing, a valve element slidably mounted in said housing adjacent said sleeve member, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure through said sleeve member to the end of said valve element, an exhaust port formed in said housing adjacent the opposing faces of said sleeve member and said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position slightly apart from said sleeve member while continuously flowing through said orifice, a plug member slidably mounted in said housing downstream of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, an open-ended spring retainer secured in said housing intermediate said orifice-end of said valve element and said plug member, a separate spring mounted between said retainer and said valve element, first and second springs mounted on opposite sides of said plug member and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively increase the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said plug member after movement thereof through a predetermined distance, said separate spring serving to cause said valve element to return to a nonregulating position once said plug member abuts against said stop member.
Claim 14
Dependent Claim
321 words
A regulating valve arrangement comprising a valve housing having a two-diameter bore formed therein, a two diameter valve element slidably mounted in said two-diameter bore, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in the larger bore portion of said two-diameter bore adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position with respect to said exhaust port while continuously flowing through said orifice, a plug member slidably mounted in said larger bore portion immediately adjacent said orifice-end of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, a retainer slidably mounted in said larger bore portion, first and second springs mounted on opposite sides of said retainer and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively iNcrease the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said retainer after movement thereof through a predetermined distance, said two-diameter valve element being caused to return to a nonregulating position once said retainer abuts against said stop member due to the pressure of said fluid on the two different end areas thereof.
Claim 15
Dependent Claim
321 words
A regulating valve arrangement comprising a valve housing having a two-diameter bore formed therein, a two diameter valve element slidably mounted in said two-diameter bore, a source of fluid under low pressure, an inlet formed in said housing for communicating said fluid under low pressure to one end of said valve element, an exhaust port formed in the larger bore portion of said two-diameter bore adjacent said valve element, an orifice formed in the other end of said valve element, the pressure of said fluid being sufficient to quickly move said valve element to a regulating position with respect to said exhaust port while continuously flowing through said orifice, a plug member slidably mounted in said larger bore portion immediately adjacent said orifice-end of said valve element and movable away from said valve element as a result of said fluid flowing through said orifice, a retainer slidably mounted in said larger bore portion, first and second springs mounted on opposite sides of said retainer and movable at a first combined spring rate in response to said movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively iNcrease the pressure of said fluid at a first predetermined rate, said first spring becoming ineffective after movement thereof through a first predetermined distance, said second spring thereafter being compressed at a second spring rate in response to further movement of said plug member away from said valve element to thereby cause said valve element in said regulating position to progressively further increase the pressure of said fluid at a second slower predetermined rate, and a stop member for stopping said retainer after movement thereof through a predetermined distance, said two-diameter valve element being caused to return to a nonregulating position once said retainer abuts against said stop member due to the pressure of said fluid on the two different end areas thereof.
References Cited (Backward Citations)
US935709A
Cited
US3154095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |