US5362137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake fluid pressure control unit
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1993-08-26
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Granted: 1994-11-08
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Expires: 2013-08-26
Abstract
Abstract Brake fluid pressure control unit improved for smaller size and lower cost. A motor for a pump ms mounted in the circuit block and the pump is mounted on one axial end of the motor. The pressure adjusting units having solenoid valves are arranged around the motor. The case of the motor has a portion forming a part of a magnetic circuit through which magnetic fluxes produced in the coils or the solenoid valves flow.
Inventors
- 👤 Teruhisa Kohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:42
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T8/00; B60T8/32; B60T8/34; B60T8/36; B60T8/3615; B60T8/3675; B60T8/368
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
136 words
A brake fluid pressure control unit provided in a fluid passage extending between a master cylinder and wheel cylinders to control the brake fluid pressure in said wheel cylinders, said control unit: comprising a circuit block having a pump, a motor for driving said pump, and a pressure adjusting means including solenoid valves for opening and closing fluid passages, said pump in said circuit block being mounted on one axial end of said motor and said pressure adjusting means being provided so as to surround the outer periphery of said motor, said solenoid valves being provided parallel to the motor, said motor having a case having a portion thereof made of a magnetic material, said portion forming a part of a magnetic circuit through which magnetic fluxes produced in the coils of said solenoid valves pass.
Claim 2
Dependent Claim
136 words
A brake fluid pressure control unit provided in a fluid passage extending between a master cylinder and wheel cylinders to control the brake fluid pressure in said wheel cylinders, said control unit: comprising a circuit block having a pump, a motor for driving said pump, and a pressure adjusting means including solenoid valves for opening and closing fluid passages, said pump in said circuit block being mounted on one axial end of said motor and said pressure adjusting means being provided so as to surround the outer periphery of said motor, said solenoid valves being provided parallel to the motor, said motor having a case having a portion thereof made of a magnetic material, said portion forming a part of a magnetic circuit through which magnetic fluxes produced in the coils of said solenoid valves pass.
Claim 3
Dependent Claim
85 words
A brake fluid pressure control unit as claimed in claim 1 wherein said motor has a rear cover made of a magnetic material and mounted to the axial end thereof opposite to said one axial end, said rear cover having a portion protruding outwards from the outer periphery of said motor, said solenoid valves being kept in position by the protruding portion of said rear cover against a brake fluid pressure, said rear cover forming a part of the magnetic circuit of said solenoid valves.
Claim 4
Dependent Claim
30 words
A brake fluid pressure control unit as claimed in claim 2 wherein said motor has a body case which forms a part of the magnetic circuit of said solenoid valves.
Claim 5
Dependent Claim
33 words
A brake fluid pressure control unit as claimed in claim 3 wherein said circuit block is made of a magnetic material and has a portion thereof used as said case of said motor.
Claim 6
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 4 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 7
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 3 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 8
Dependent Claim
33 words
A brake fluid pressure control unit as claimed in claim 2 wherein said circuit block is made of a magnetic material and has a portion thereof used as said case of said motor.
Claim 9
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 7 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 10
Dependent Claim
30 words
A brake fluid pressure control unit as claimed in claim 1 wherein said motor has a body case which forms a part of the magnetic circuit of said solenoid valves.
Claim 11
Dependent Claim
33 words
A brake fluid pressure control unit as claimed in claim 9 wherein said circuit block is made of a magnetic material and has a portion thereof used as said case of said motor.
Claim 12
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 10 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 13
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 9 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 14
Dependent Claim
33 words
A brake fluid pressure control unit as claimed in claim 1 wherein said circuit block is made of a magnetic material and has a portion thereof used as said case of said motor.
Claim 15
Dependent Claim
59 words
A brake fluid pressure control unit as claimed in claim 13 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
Claim 16
Dependent Claim
60 words
A brake fluid pressure control unit as claimed in of claim 1 wherein said rear cover of said motor has a housing in which is mounted an electronic control unit having a microcomputer and wherein connectors from said solenoid valves and said motor are guided into said housing and electrically connected to a control circuit on said electronic control unit.
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) | 1997-11-07 | 1998-05-09 | 1998-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-07 | 2002-05-09 | 2002-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-07 | 2006-05-09 | 2006-11-08 | $7700.00 | Window Closed / Lapsed |