US3650358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decelerating system for touring vehicles
Assignee: Labavia SGE SARL
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Filing: 1969-09-16
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Granted: 1972-03-21
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Expires: 1989-09-16
Abstract
Abstract This system is intended for touring vehicles driven at a high speed corresponding to an engine shaft speed above 3,000 r.p.m. and preferably above 5,000 r.p.m. The engine is cooled by forced water circulation in a circuit comprising in series a pump, the engine and a radiator having a high heat dissipation capacity. The system comprises a hydraulic decelerator whose rotor runs permanently at a speed of at least the same order as engine shaft speed and whose diameter is less than 20 centimeters. The decelerator is connected in parallel to a part of the engine cooling circuit by means of a three-way two-position valve which when in one position sends all the water it receives to said part of the circuit isolating the decelerator, while when in its other position the valve sends all the water it receives to the decelerator inlet, isolating said circuit part.
Inventors
- 👤 Pierre Etienne Bessiere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:01
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/08; B60T1/087; F; F16; F16D; F16D57/00; F16D57/04; F16D65/00; F16D65/78; F01; F01P; F01P2060/00; F01P2060/06; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
205 words
A system for decelerating a touring vehicle driven at a high speed corresponding to an engine shaft speed above 3,000 r.p.m., the vehicle engine normally being cooled by forced liquid circulation in a circuit comprising in series a pump, the vehicle engine and a radiator having a high heat dissipation capacity, wherein the system comprises: a hydraulic decelerator having a rotor which is adapted to be connected to the engine shaft so as to run permanently at a speed at least of the same order as engine shaft speed, the diameter of said rotor being less than 20 cm., inlet and outlet means connecting the decelerator in parallel to a part of the engine cooling circuit, said means comprising upstream of said part of said engine cooling circuit a three-way two-position valve arranged when in one position to send all the liquid it receives to said part of the circuit, isolating the decelerator, and when in its other position to send all the liquid it receives to the inlet means, isolating said circuit part, and a constriction means in the outlet means for automatically varying the flow cross section which it presents to the liquid in the same sense as the pressure of the liquid.
Claim 2
Independent Claim
205 words
A system for decelerating a touring vehicle driven at a high speed corresponding to an engine shaft speed above 3,000 r.p.m., the vehicle engine normally being cooled by forced liquid circulation in a circuit comprising in series a pump, the vehicle engine and a radiator having a high heat dissipation capacity, wherein the system comprises: a hydraulic decelerator having a rotor which is adapted to be connected to the engine shaft so as to run permanently at a speed at least of the same order as engine shaft speed, the diameter of said rotor being less than 20 cm., inlet and outlet means connecting the decelerator in parallel to a part of the engine cooling circuit, said means comprising upstream of said part of said engine cooling circuit a three-way two-position valve arranged when in one position to send all the liquid it receives to said part of the circuit, isolating the decelerator, and when in its other position to send all the liquid it receives to the inlet means, isolating said circuit part, and a constriction means in the outlet means for automatically varying the flow cross section which it presents to the liquid in the same sense as the pressure of the liquid.
Claim 3
Dependent Claim
40 words
A system according to claim 1, including control means for the three-way valve arranged to be automatically operated by the beginning of the instinctive movement of the right foot of the driver at the moment when he wishes to decelerate.
Claim 4
Dependent Claim
22 words
A system according to claim 2, wherein the control means are operated by the end of the release of the accelerator pedal.
Claim 5
Dependent Claim
22 words
A system according to claim 2, wherein the control means are operated by the beginning of the depression of the brake pedal.
Claim 6
Dependent Claim
15 words
A system according to claim 1, wherein said engine shaft speed is above 5,000 r.p.m.
Claim 7
Dependent Claim
13 words
A system according to claim 1, wherein said rotor-diameter is approximately 15 cm.
Claim 8
Dependent Claim
69 words
A system according to claim 1, the vehicle engine being an internal combustion engine including an induction pipe with an adjustable throttle member therein, said system further comprising power means for deriving power from the negative pressure in the engine induction pipe downstream of the adjustable throttle member therein when said throttle member is at least partly closed, and for using this derived power to operate the three-way valve.
Claim 9
Dependent Claim
11 words
A touring vehicle comprising a decelerating system according to claim 1.
Claim 10
Dependent Claim
114 words
A system as set forth in claim 1, the vehicle engine being an internal combustion engine including an induction pipe with an adjustable throttle member therein, said system further comprising power means for deriving power from the negative pressure in the engine induction pipe downstream of the adjustable throttle member therein when said throttle member is at least partly clOsed, and for using this derived power to operate the three-way valve; and driver-controlled means for connecting and disconnecting said power means to the induction pipe downstream of the adjustable throttle member therein when said throttle member is at least partly closed in order to bring said power means into and out of service respectively.
Claim 11
Dependent Claim
72 words
A system as set forth in claim 9, wherein said power means comprise a chamber connected via a line to a place in the engine induction pipe downstream of the throttle member, and a movable member mounted in said chamber to be moved by the pressure in said chamber, said movable member being operatively connected to said three-way valve; and said driver-controlled means comprise a driver-controlled solenoid valve disposed in said line.
Claim 12
Dependent Claim
31 words
A system as set forth in claim 10, wherein the driver-controlled means comprise a switch which is accessible to the driver and connected in the energizing circuit for the solenoid valve.
Claim 13
Dependent Claim
48 words
A system as set forth in claim 11, wherein the driver-controlled means comprise an electric switch which is connected in the energizing circuit for the solenoid valve and whose operation is controlled by a driver control different from said previously mentioned switch which is accessible to the driver.
Claim 14
Dependent Claim
35 words
A system as set forth in claim 12, wherein the driver-controlled means comprise at least two switches connected to two different control actions and connected in series in the energizing circuit for the solenoid valve.
Claim 15
Dependent Claim
47 words
A system as set forth in claim 1, wherein at least some of the last-mentioned part of the decelerator cooling circuit comprises a number of parallel-connected sections each having a constriction means and, means being provided for selectively closing and opening all the various sections except one.
Claim 16
Dependent Claim
16 words
A system as set forth in claim 14, wherein the number of parallel-connected sections is two.
Claim 17
Dependent Claim
61 words
A system as set forth in claim 15, the vehicle engine being an internal combustion engine having an induction pipe containing an adjustable throttle member wherein one of the two parallel-connected sections has a nonreturn valve adapted to be operated, under driver control, by the negative pressure which exists in the engine induction pipe downstream of the adjustable throttle member therein.
Claim 18
Dependent Claim
29 words
A system as set forth in claim 14, wherein the constriction means is embodied by a diaphragm in the form of an orifice in a membrane made of elastomer.
Claim 19
Dependent Claim
25 words
A system as set forth in claim 17, wherein the edge of the orifice has the shape of a nozzle converging in the downstream direction.
Claim 20
Dependent Claim
29 words
A system as set forth in claim 1, wherein control of the automatic variations of the passage cross section of the constriction is provided directly by the liquid pressure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |