US3908805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-skid control device and system
Assignee: Jacobs Vehicle Systems Inc
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Filing: 1974-01-09
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Granted: 1975-09-30
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Expires: 1994-01-09
Abstract
Abstract A mechanical anti-wheel lock-up control system for avoiding wheel lock-up and consequent skidding in a motor vehicle, including a lock-up sensor or control device arranged in an open end of the axle tube and protectively covered over by the hub cap of the wheel, the control device being of an inertia flywheel actuable valve type controlling relief from and application of service air to the braking mechanism, the control device having an input shaft associated with the flywheel by means of an axially disengageable cam clutch and geared to be driven by the hub cap. The control device may be employed in a system individual to each wheel, or in a system serving a plurality or pair of wheels. In the latter, a control module of valves modulates the pressure of service air feeding to the braking mechanism in controlling a wheel lock-up condition.
Inventors
- 👤 Walter H Morse
- 👤 Jr Ira R Ames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:01
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/72; B60T8/74
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
315 words
A motor vehicle including an axle tube having a wheel hub mounted thereon for relative rotation and having an open end; a hub cap covering over the open end of the axle tube and secured to the wheel hub for rotation with the latter, the hub cap defining an interior chamber adjacent the open end of the axle tube; an anti-wheel lock-up control device disposed in part in the open end of the axle tube and projecting in part into the chamber provided by the hub cap; retaining means detachably coupling the control device to the axle tube, the control device having an input drive shaft; means drivingly engaging the hub cap with the input drive shaft; a wheel mounted upon the wheel hub; a source of service air; a brake valve selectively operable for feeding the service air to a main line; a brake actuator having a pressure pilot chamber subject to reception of service air for applying braking torque to the wheel; a service air relay having an inlet connection with the main line, an outlet connection with the pilot chamber of the brake actuator, and a vent to atmosphere; a pressure air operable pilot valve in the relay normally communicating the inlet and outlet and blocking the outlet from the vent; the control device having a supply inlet connected to a branch of the main line, an air signal outlet connected for conducting an air signal to pressurize the pilot valve in the relay, and a signal vent to atmosphere; a control valve in the control device shiftable from a normal position communicating the signal outlet to the signal vent to a reserve position sealing the signal vent and communicating the supply inlet with the signal outlet, and inertia flywheel means in the control device having response to rapid decelerating and accelerating actions of the wheel controlling shifting of the control valve.
Claim 2
Dependent Claim
315 words
A motor vehicle including an axle tube having a wheel hub mounted thereon for relative rotation and having an open end; a hub cap covering over the open end of the axle tube and secured to the wheel hub for rotation with the latter, the hub cap defining an interior chamber adjacent the open end of the axle tube; an anti-wheel lock-up control device disposed in part in the open end of the axle tube and projecting in part into the chamber provided by the hub cap; retaining means detachably coupling the control device to the axle tube, the control device having an input drive shaft; means drivingly engaging the hub cap with the input drive shaft; a wheel mounted upon the wheel hub; a source of service air; a brake valve selectively operable for feeding the service air to a main line; a brake actuator having a pressure pilot chamber subject to reception of service air for applying braking torque to the wheel; a service air relay having an inlet connection with the main line, an outlet connection with the pilot chamber of the brake actuator, and a vent to atmosphere; a pressure air operable pilot valve in the relay normally communicating the inlet and outlet and blocking the outlet from the vent; the control device having a supply inlet connected to a branch of the main line, an air signal outlet connected for conducting an air signal to pressurize the pilot valve in the relay, and a signal vent to atmosphere; a control valve in the control device shiftable from a normal position communicating the signal outlet to the signal vent to a reserve position sealing the signal vent and communicating the supply inlet with the signal outlet, and inertia flywheel means in the control device having response to rapid decelerating and accelerating actions of the wheel controlling shifting of the control valve.
Claim 3
Dependent Claim
30 words
A motor vehicle as in claim 1, wherein a second anti-wheel lock-up control device is similarly associated with the opposite end of the axle tube and the related hub cap.
Claim 4
Dependent Claim
43 words
A motor vehicle as in claim 1, wherein the control device includes a peripheral flange disposed in abutting relation to the end of the axle tube, and the retaining means is a collar nut collaring the flange and threadedly engaging the axle tube.
Claim 5
Dependent Claim
71 words
A motor vehicle as in claim 1, including air operable brake actuating means for braking rotation of the wheel hub, an air operable relay having a connection with an air service line for conducting operating air to the brake actuating means, and valve means in the control device having response to rapid deceleration of the wheel hub to interrupt feeding of operating air by the relay to the brake acutating means.
Claim 6
Dependent Claim
25 words
A motor vehicle as in claim 1, wherein planetary gearing drivingly engages the input shaft, and means drivingly engages the hub cap with the gearing.
Claim 7
Dependent Claim
34 words
A motor vehicle as in claim 3, wherein the hub cap has a plurality of internal longitudinally extending slots and planetary gearing has a drive cage formed with lugs slidably received into the slots.
Claim 8
Dependent Claim
86 words
A motor vehicle as in claim 1, including brake actuating means for applying braking torque to the wheel Hub, service air brake valve means selectively operable to feed service operating air to the brake actuating means; and means in the control device having response to rapid deceleration of the input shaft to interrupt feed of service operating air to the brake actuating means, and having response to predetermined re-acceleration of the input drive shaft to restore feed of service operating air to the brake actuating means.
Claim 9
Dependent Claim
38 words
A motor vehicle as in claim 7, including a control module valve means connected between the control device and the brake actuating means for throttling and as a consequence limiting service air pressure to the brake actuating means.
Claim 10
Dependent Claim
204 words
An anti-wheel lock-up control unit for use in combination with a vehicle having an axle tube open in an end thereof, a wheel hub rotatably supported upon the axle tube, and a hub cap removably attachable to the hub in axial extension thereof for providing an interior chamber adjacent the open end of the axle tube, the control unit comprising a housing having a reduced forward section adapted to be slidably entered into the open end of the axle tube and having an enlarged rear section adapted to project from the axle tube for reception into the chamber of the hub cap, a clamping collar supported upon the housing for detachably clamping the control unit in position to the axle tube, an input shaft rotatably supported in the housing, and drive means supported upon the shaft including a driven member having lugs adapted for obtaining an axially slidable splined driven connection with the interior of the hub cap for transmitting rotation of the hub through the hub cap to the shaft, the control unit after having been combined with the axle tube and hub cap being slidably removable as a unit from the axle tube following removal of the hub cap and the collar.
Claim 11
Dependent Claim
204 words
An anti-wheel lock-up control unit for use in combination with a vehicle having an axle tube open in an end thereof, a wheel hub rotatably supported upon the axle tube, and a hub cap removably attachable to the hub in axial extension thereof for providing an interior chamber adjacent the open end of the axle tube, the control unit comprising a housing having a reduced forward section adapted to be slidably entered into the open end of the axle tube and having an enlarged rear section adapted to project from the axle tube for reception into the chamber of the hub cap, a clamping collar supported upon the housing for detachably clamping the control unit in position to the axle tube, an input shaft rotatably supported in the housing, and drive means supported upon the shaft including a driven member having lugs adapted for obtaining an axially slidable splined driven connection with the interior of the hub cap for transmitting rotation of the hub through the hub cap to the shaft, the control unit after having been combined with the axle tube and hub cap being slidably removable as a unit from the axle tube following removal of the hub cap and the collar.
Claim 12
Dependent Claim
43 words
An anti-wheel lock-up control unit as in claim 9, wherein the drive member has rotation relative to the shaft and drivingly engages planetary gearing having a sun gear keyed to the shaft whereby rotation of the drive member is transmitted to the shaft.
Claim 13
Dependent Claim
71 words
An anti-wheel lock-up control unit as in claim 10, wherein a flywheel has a bearing support upon the shaft for relative rotation and relative axial movement, and a cam toothed disengagable clutch engages the flywheel with the shaft for rotation with the shaft in an engaged condition of the clutch, and slide valve means controlling communication of an air inlet port with an outlet port is operatively connected with the flywheel.
Claim 14
Dependent Claim
41 words
An anti-wheel lock-up control unit as in claim 11, wherein the clutch includes a driving member pinned to the shaft, and a driven member unitary with the flywheel, the driving member having cam teeth engaging complementary teeth of the driven member.
Claim 15
Dependent Claim
42 words
An anti-wheel lock-up control unit as in claim 12, wherein the driven clutch member is responsive to sudden deceleration of the driving clutch member to be cammed axially out of engagement from the driving member and to carry the flywheel with it.
Claim 16
Dependent Claim
26 words
An anti-skid wheel lock-up control unit as in claim 13, wherein spring means normally biases the driven clutch member axially into engagement with driving clutch member.
Claim 17
Dependent Claim
26 words
An anti-wheel lock-up control unit as in claim 14, wherein the spring means also biases the valve means axially into constant abutting relation with the flywheel.
Claim 18
Dependent Claim
46 words
An anti-wheel lock-up control unit as in claim 15, wherein the valve means has a normal position in the engaged condition of the clutch in which the air inlet port is blocked from the outlet port and the outlet port is connected with a vent port.
Claim 19
Dependent Claim
44 words
An anti-wheel lock-up control unit as in claim 16, wherein the valve means has an axially shifted position in a disengaged condition of the clutch in which position the valve means seals the vent port and communicates the inlet port with the outlet port.
Claim 20
Dependent Claim
172 words
An anti-wheel lock-up control device for controlling lock-up in a wheel of a motor vehicle having air operable Braking mechanism, comprising an input drive shaft carrying a pinion adapted to have a driven connection with the wheel, flywheel means having a bearing support on the shaft for relative rotation and axial movement, axially disengageable cam toothed clutch means including a driven member carried by the flywheel means normally engaging a driving member carried by the shaft, valve means abutting the flywheel means shiftable from a normal condition blocking communication of an air service inlet with an outlet connectible to the braking mechanism to a reverse condition communicating the inlet with the outlet, and spring means constantly biasing the valve means into abutment with the flywheel means and normally maintaining the clutch means engaged, the driven clutch member being disengageable to shift the flywheel means and as a consequence the valve means axially from its normal condition to its reverse condition as a consequence of a sudden deceleration of the driving clutch member.
Claim 21
Dependent Claim
172 words
An anti-wheel lock-up control device for controlling lock-up in a wheel of a motor vehicle having air operable Braking mechanism, comprising an input drive shaft carrying a pinion adapted to have a driven connection with the wheel, flywheel means having a bearing support on the shaft for relative rotation and axial movement, axially disengageable cam toothed clutch means including a driven member carried by the flywheel means normally engaging a driving member carried by the shaft, valve means abutting the flywheel means shiftable from a normal condition blocking communication of an air service inlet with an outlet connectible to the braking mechanism to a reverse condition communicating the inlet with the outlet, and spring means constantly biasing the valve means into abutment with the flywheel means and normally maintaining the clutch means engaged, the driven clutch member being disengageable to shift the flywheel means and as a consequence the valve means axially from its normal condition to its reverse condition as a consequence of a sudden deceleration of the driving clutch member.
Claim 22
Dependent Claim
168 words
An anti-wheel lock-up control device for controlling lock-up in a wheel of a motor vehicle having air operable braking mechanism, comprising an input drive shaft carrying a pinion adapted to have a driven connection, flywheel means having a bearing support on the shaft for relative rotation and axial movement, axially disengageable cam toothed clutch means including a driven member carried by the flywheel means normally engaging a driving member carried by the shaft, valve means abutting the flywheel means shiftable from a normal condition blocking communication of an air service inlet with an outlet connectible to the braking mechanism to a reverse condition communicating the inlet with the outlet, and spring means constantly biasing the valve means into abutment with the flywheel means and normally maintaining the clutch means engaged, the driven clutch member being desengageable to shift the flywheel means and as a consequence valve means axially from its normal condition to its reverse condition as a consequence of a sudden deceleration of the driving clutch member.
Claim 23
Dependent Claim
168 words
An anti-wheel lock-up control device for controlling lock-up in a wheel of a motor vehicle having air operable braking mechanism, comprising an input drive shaft carrying a pinion adapted to have a driven connection, flywheel means having a bearing support on the shaft for relative rotation and axial movement, axially disengageable cam toothed clutch means including a driven member carried by the flywheel means normally engaging a driving member carried by the shaft, valve means abutting the flywheel means shiftable from a normal condition blocking communication of an air service inlet with an outlet connectible to the braking mechanism to a reverse condition communicating the inlet with the outlet, and spring means constantly biasing the valve means into abutment with the flywheel means and normally maintaining the clutch means engaged, the driven clutch member being desengageable to shift the flywheel means and as a consequence valve means axially from its normal condition to its reverse condition as a consequence of a sudden deceleration of the driving clutch member.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |