Patent US3696893A successfully refreshed from Google Patents.
US3696893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake and cooling system
Assignee: Motors Liquidation Co
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Filing: 1971-02-11
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Granted: 1972-10-10
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Expires: 1991-02-11
Abstract
Abstract A brake and a cooling system including brake discs mounted in part on a transmission output shaft and secured in part on the transmission housing for stopping the rotation of the output shaft when the discs are engaged, a source of coolant, and means for automatically providing coolant to the brake discs during such braking conditions. An additional brake-engaging device, utilizing the above-mentioned brake discs, is employed to stop the rotation of the output shaft in response to a fluid pressure signal indicative of a substantially zero throttle opening. When front wheel disc brakes are employed, either a vane- or centrifugal-type pump is mounted on the output shaft and supplied with coolant from the above source by a manual brake pedalactuated valve for cooling the disc brakes.
Inventors
- 👤 Erkki A Koivunen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:27
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/853; B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; B60T1/062; F16D2065/783
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
220 words
A brake system for use with a transmission having an output shaft, said system comprising a source of fluid, a friction brake operatively connected to said outPut shaft, first passage means including a pump communicating between said fluid source and said friction brake, rotatably mounted shaft means for engaging said friction brake, a manual brake lever secured to said shaft means for rotating said shaft, first and second valve means in said first passage means and operatively connected to said shaft means, first connector means operatively connected to said shaft means and to each of said valve means for opening both of said valve means when said friction brake is engaged in response to manual actuation of said manual brake lever for supplying fluid from said source to said friction brake as a coolant therefor, a set of wheel disc brakes, a brake pedal, second connector means operatively connected between said brake pedal and said first valve means and being responsive to actuation of said brake pedal to open said first valve means, and second passage means communicating between said set of disc brakes and said first passage means for supplying fluid from said source to said set of disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
Claim 2
Dependent Claim
220 words
A brake system for use with a transmission having an output shaft, said system comprising a source of fluid, a friction brake operatively connected to said outPut shaft, first passage means including a pump communicating between said fluid source and said friction brake, rotatably mounted shaft means for engaging said friction brake, a manual brake lever secured to said shaft means for rotating said shaft, first and second valve means in said first passage means and operatively connected to said shaft means, first connector means operatively connected to said shaft means and to each of said valve means for opening both of said valve means when said friction brake is engaged in response to manual actuation of said manual brake lever for supplying fluid from said source to said friction brake as a coolant therefor, a set of wheel disc brakes, a brake pedal, second connector means operatively connected between said brake pedal and said first valve means and being responsive to actuation of said brake pedal to open said first valve means, and second passage means communicating between said set of disc brakes and said first passage means for supplying fluid from said source to said set of disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
Claim 3
Dependent Claim
295 words
A brake system for a motor vehicle including a transmission housing having a transmission output shaft rotatably mounted therein, said system comprising a source of fluid, means for pressurizing said fluid, a first plurality of brake plates secured to said housing, a second plurality of brake plates secured to said transmission output shaft for rotation therewith, first passage means communicating between said fluid source and said brake plates, a second shaft rotatably mounted through an opening formed in the side of said housing adjacent said output shaft, engagement means operatively connected to said second shaft and to said brake plates for engaging said brake plates in response to rotary movement of said second shaft, a manual brake lever secured to said second shaft exterior of said housing for rotating said shaft, first and second normally closed valve means in said first passage means and operatively connected to said second shaft, linkage means operatively connected to said second shaft and to each of said valve means for opening both of said valve means when one of said pluralities of brake plates is moved into engagement with the other of said pluralities of brake plates in response to manual actuation of said manual brake lever for supplying fluid from said source to said plates as a coolant therefor, a set of wheel disc brakes, a brake pedal, means operatively connected to said first valve means and to said brake pedal for opening said first valve means upon actuation of said brake pedal, and second passage means communicating between said first passage means and said set of disc brakes for supplying fluid from said source to said disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
Claim 4
Dependent Claim
295 words
A brake system for a motor vehicle including a transmission housing having a transmission output shaft rotatably mounted therein, said system comprising a source of fluid, means for pressurizing said fluid, a first plurality of brake plates secured to said housing, a second plurality of brake plates secured to said transmission output shaft for rotation therewith, first passage means communicating between said fluid source and said brake plates, a second shaft rotatably mounted through an opening formed in the side of said housing adjacent said output shaft, engagement means operatively connected to said second shaft and to said brake plates for engaging said brake plates in response to rotary movement of said second shaft, a manual brake lever secured to said second shaft exterior of said housing for rotating said shaft, first and second normally closed valve means in said first passage means and operatively connected to said second shaft, linkage means operatively connected to said second shaft and to each of said valve means for opening both of said valve means when one of said pluralities of brake plates is moved into engagement with the other of said pluralities of brake plates in response to manual actuation of said manual brake lever for supplying fluid from said source to said plates as a coolant therefor, a set of wheel disc brakes, a brake pedal, means operatively connected to said first valve means and to said brake pedal for opening said first valve means upon actuation of said brake pedal, and second passage means communicating between said first passage means and said set of disc brakes for supplying fluid from said source to said disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
Claim 5
Dependent Claim
307 words
A brake system for a motor vehicle including a transmission housing having a transmission output shaft rotatably mounted therein, said system comprising a source of fluid, a first plurality of brake discs secured to said housing, a second plurality of brake discs secured to said transmission output shaft for rotation therewith, first passage means including a pump mounted on said transmission output shaft communicating between said fluid source and said brake discs, a second shaft rotatably mounted through an opening formed in the side of said housing, engagement means operatively connected to said second shaft and to said brake discs for engaging said brake discs in response to rotary movement of said second shaft, a manual brake lever secured to said second shaft exterior of said housing for rotating said shaft, first and second normally closed valve means in said first passage means and operatively connected to said second shaft, lever means operatively connected to said second shaft and to each of said valve means for opening both of said valve means when saId second plurality of brake discs is moved into engagement with said first plurality of brake discs in response to manual actuation of said manual brake lever for supplying fluid from said source to said discs as a coolant therefor, a set of front wheel disc brakes, a brake pedal, a portion of said lever means being responsive to depression of said brake pedal to open said first valve means without affecting said second valve means, and second passage means communicating between said set of disc brakes and said first passage means upstream of said second valve means and downstream of said pump for supplying fluid from said source to said front wheel disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
Claim 6
Dependent Claim
307 words
A brake system for a motor vehicle including a transmission housing having a transmission output shaft rotatably mounted therein, said system comprising a source of fluid, a first plurality of brake discs secured to said housing, a second plurality of brake discs secured to said transmission output shaft for rotation therewith, first passage means including a pump mounted on said transmission output shaft communicating between said fluid source and said brake discs, a second shaft rotatably mounted through an opening formed in the side of said housing, engagement means operatively connected to said second shaft and to said brake discs for engaging said brake discs in response to rotary movement of said second shaft, a manual brake lever secured to said second shaft exterior of said housing for rotating said shaft, first and second normally closed valve means in said first passage means and operatively connected to said second shaft, lever means operatively connected to said second shaft and to each of said valve means for opening both of said valve means when saId second plurality of brake discs is moved into engagement with said first plurality of brake discs in response to manual actuation of said manual brake lever for supplying fluid from said source to said discs as a coolant therefor, a set of front wheel disc brakes, a brake pedal, a portion of said lever means being responsive to depression of said brake pedal to open said first valve means without affecting said second valve means, and second passage means communicating between said set of disc brakes and said first passage means upstream of said second valve means and downstream of said pump for supplying fluid from said source to said front wheel disc brakes as a coolant therefor in response to manual actuation of either said manual brake lever or said brake pedal.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |