US3652133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake control device
Assignee: Sharp Corp
•
Filing: 1969-06-03
•
Granted: 1972-03-28
•
Expires: 1989-06-03
Abstract
Abstract An improved brake control device in a brake system of the type in which decrease in the speed of wheels due to braking force applied to them is converted into an electrical signal which activates brake release means when its value exceeds a preset reference value and is detected thereby to remove the braking force for a suitable time, after which the braking force is again applied, the braking of the wheels being accomplished by a cyclic repetition of this braking and releasing action, the brake control device having means for lowering the reference value after receiving the electrical signal corresponding to the initial speed decrease of the wheels thereby to cause the system to operate thereafter on the basis of the reference value thus lowered.
Inventors
- 👤 Toshio Yamazaki
- 👤 Takao Abu
- 👤 Takefumi Sato
- 👤 Koji Nishida
- 👤 Tosiaki Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
232 words
In a brake control device of the type comprising a braking means, a brake control means, conversion means adapted to convert angular deceleration of the wheels caused by application of braking force into an electrical signal, a detector means for detecting deviation of said electrical signal from a predetermined reference value, said detector means being coupled with said brake control means such that upon detection of said deviation of said electrical signal, said brake control means is operated to cause release of the braking for an appropriate period of time and upon rerotation of the wheels braking force is reapplied and whereby application and release of the braking force are repeated, the improvement comprising, in combination: first circuit means comprising an element for electrically detecting angular deceleration of the wheel to be braked and for generating a control signal upon deviation of said angular deceleration above a predetermined reference value; second circuit means electrically connected to said first circuit means and comprising an element responsive to said control signal of said first circuit means to produce a pulse releasing signal effecting release of said brake control means; and third circuit means comprising an element responsive to said angular deceleration to decrease said reference value after generation of said control signal by said first circuit means, said pulse releasing signal of said second circuit means being made responsive to said decreased referenced value.
Claim 2
Dependent Claim
232 words
In a brake control device of the type comprising a braking means, a brake control means, conversion means adapted to convert angular deceleration of the wheels caused by application of braking force into an electrical signal, a detector means for detecting deviation of said electrical signal from a predetermined reference value, said detector means being coupled with said brake control means such that upon detection of said deviation of said electrical signal, said brake control means is operated to cause release of the braking for an appropriate period of time and upon rerotation of the wheels braking force is reapplied and whereby application and release of the braking force are repeated, the improvement comprising, in combination: first circuit means comprising an element for electrically detecting angular deceleration of the wheel to be braked and for generating a control signal upon deviation of said angular deceleration above a predetermined reference value; second circuit means electrically connected to said first circuit means and comprising an element responsive to said control signal of said first circuit means to produce a pulse releasing signal effecting release of said brake control means; and third circuit means comprising an element responsive to said angular deceleration to decrease said reference value after generation of said control signal by said first circuit means, said pulse releasing signal of said second circuit means being made responsive to said decreased referenced value.
Claim 3
Dependent Claim
31 words
A brake control device as defined in claim 1, wherein said third circuit means comprises means for resetting the device in response to a signal representative of termination of brake release.
Claim 4
Dependent Claim
59 words
A brake control device as defined in claim 1, in which said first circuit means comprises an amplifying means for amplifying the signal representative of the detected angular deceleration, said third circuit being coupled with said amplifying means and varying the amplification degree of said amplifying means in response to said pulse signal to decrease the predetermined referenced value.
Claim 5
Dependent Claim
52 words
A brake control device as defined in claim 1, in which said first circuit means comprises a gate means, and wherein said third circuit means is coupled with said gate means and varies a bias potential of said gate means in response to said pulse signal to decrease said predetermined reference value.
Claim 6
Dependent Claim
42 words
A brake control device as defined in claim 1, in which said first circuit means comprises a generator for converting rotation of the wheels into an electrical signal, said generator producing an input signal representative of the angular deceleration of the wheels.
Claim 7
Dependent Claim
59 words
A brake control device as defined in claim 1, wherein said third circuit means comprises a means for generating a signal after a predetermined period of time from commencement of braking when angular deceleration at the braking commencement is less than a predetermined value, the means for decreasing said predetermined value being operated in response to sAid generated signal.
Claim 8
Dependent Claim
31 words
A brake control device as defined in claim 6, wherein said third circuit means comprises means for resetting the device in response to the signal representative of termination of braking release.
References Cited (Backward Citations)
US3511542A
Cited
US3545817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |