US Patent No: 6,979,062
Number of patents in Portfolio can not be more than 2000
Braking system
Stats
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Dec 27, 2005
Issued date -
Sep 29, 2003
filing date -
10/671,480
serial no -
In Force
status
Importance
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Abstract
A brake system and a brake device for use with automobiles is provided in which braking energy stored in an auxiliary pressure source can be effectively used for braking, even if an electrical system fails. The vehicle brake system includes a proportional pressure control valve for generating braking liquid pressure by adjusting the braking energy stored in the auxiliary pressure source. A passage transmits the liquid pressure generated by a brake pedal stroke, a switching valve opens the passage in the powered condition and closes the passage in the off-powered condition, and an auxiliary control portion activates the proportional pressure control valve. Even in the off-powered condition, the high pressure accumulated in the auxiliary pressure source can be used to adjust the required braking liquid pressure at the proportional pressure control valve.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,462,343 Hydraulic pressure booster having booster piston and valve mechanism associated with mechanically operated and electrically controlled pressure regulators | 18 | 1994 | |
| 5,658,057 Hydraulic braking apparatus having hydraulic pressure control valve and electrically controlled device to control the pressure control valve | 12 | 1996 | |
| 6,126,248 Hydraulic brake device | 20 | 1998 | |
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| 5,979,998 Hydraulic pressure control system for a vehicle | 4 | 1998 | |
| 6,086,165 Solenoid controlled valve and antilock control apparatus using the same | 6 | 1998 | |
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| 5,302,008 Fail-safe system and brake actuating apparatus for a vehicular brake control apparatus | 59 | 1992 | |
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| 4,708,404 Hydraulic brake system with hydraulic brake force boosting | 21 | 1986 | |
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| 5,878,573 Hydraulic brake system | 9 | 1997 | |
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| 6,217,129 Vehicular brake system with vehicle stability management | 7 | 1999 | |
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| 5,248,191 Pressure control valve for continuous pressure control to wheel cylinder | 18 | 1992 | |
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| 5,273,348 Brake control system for automotive vehicles | 14 | 1992 | |
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| 6,247,765 Method and apparatus for controlling fluid pressure | 8 | 1998 | |
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| 4,919,493 Method and apparatus for controlling brake pressure in vehicle brake systems | 24 | 1988 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 27, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 27, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |