Patent US3612619A successfully refreshed from Google Patents.
US3612619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety brake apparatus
Assignee: Individual
•
Filing: 1970-04-23
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Granted: 1971-10-12
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Expires: 1990-04-23
Abstract
Abstract Apparatus for applying the hydraulic brakes of a vehicle upon opening a door and releasing the brakes when the vehicle is conditioned for normal driving. In the illustrated embodiment the opening of a door actuates a reversible electric motor which drives a cam member through a housing, thus, rotating a pinion which meshes with a pivotally mounted rack arm. The rack arm operates through a lever to depress an output plunger which is mechanically connected between a brake actuator rod and the piston of a master cylinder. Thus, vehicle brakes may be applied either through the automatic door opening responsive system or through the normal brake pedal.
Inventors
- 👤 Henry L Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/20; B60T7/00; B60T7/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
In an auxiliary brake system for applying the brakes of a vehicle in response to the opening of a door; an actuator having a housing, a cam member displaceably mounted in the housing and having a rack portion, a rack arm pivotally mounted in the housing and having a rack portion, a gear disposed between and in meshing relationship with the rack portions of the cam member and rack arm, means responsive to the opening of a vehicle door for reversibly displacing the cam member between first and second positions to pivot the rack arm, and piston means displaceably associated with the rack arm for applying a brake when the cam member is in the first position and releasing the brake when the cam member is in the second position.
Claim 2
Dependent Claim
130 words
In an auxiliary brake system for applying the brakes of a vehicle in response to the opening of a door; an actuator having a housing, a cam member displaceably mounted in the housing and having a rack portion, a rack arm pivotally mounted in the housing and having a rack portion, a gear disposed between and in meshing relationship with the rack portions of the cam member and rack arm, means responsive to the opening of a vehicle door for reversibly displacing the cam member between first and second positions to pivot the rack arm, and piston means displaceably associated with the rack arm for applying a brake when the cam member is in the first position and releasing the brake when the cam member is in the second position.
Claim 3
Dependent Claim
36 words
Apparatus as defined in claim 1 wherein the piston means includes an hydraulic cylinder, at least one brake line pressurized by the cylinder and a wheel brake unit operated by the pressurization of the brake line.
Claim 4
Dependent Claim
43 words
Apparatus as defined in claim 1 including output means operatively connected between the rack arm and the piston means and displaceable between brake applied and brake released positions by the rack arm, and means biasing the output means to the brake released positions.
Claim 5
Dependent Claim
57 words
Apparatus as defined in claim 3 wherein the output means includes a shaft, one end of the shaft being in operative engagement with the piston means and the other end of the shaft being adapted to receive a brake actuator rod such that a vehicle brake may be applied by an external means through the output member.
Claim 6
Dependent Claim
22 words
Apparatus as defined in claim 4 wherein the bias means is a coil spring urging the shaft toward the brake actuator rod.
Claim 7
Dependent Claim
28 words
Apparatus as defined in claim wherein the means responsive to the opening of a vehicle door includes a reversible electric motor operatively connected to displace the cam member.
Claim 8
Dependent Claim
32 words
Apparatus as defined in claim 6 wherein the cam member has a second rack portion thereon, and a drive pinion meshing with the second rack portion and rotatable by said electric motor.
Claim 9
Dependent Claim
28 words
Apparatus as defined in claim 7 wherein the second rack portion has means at each end thereof for permitting unidirectional slippage between the pinion and the rack portion.
Claim 10
Dependent Claim
44 words
Apparatus as defined in claim 1 including a plunger bearing against the rack arm to be displaced thereby, a lever having one end connected to the plunger, the other end connected to the piston means and an intermediate pivot point connected to the housing.
Claim 11
Dependent Claim
21 words
Apparatus as defined in claim 9 including bias means to urge the lever in a direction tending to release the brake.
Claim 12
Dependent Claim
136 words
In a system for applying the brakes of a vehicle in response to an abnormal travelling condition in the state of the vehicle: a reversible electric motor, means for energizing the motor in response to the existence of said condition, a housing, a linearly displaceable arm having a rack portion disposed within the housing and operatively connected for reversible displacement relative to the housing by the motor, a rack arm pivotally mounted in the housing, a gear meshing between the rack portion of the displaceable arm and the rack arm, and output means displaceable by the rack arm between brake released and brake applied positions, said output means including at least one member adapted for direct mechanical connection to a master cylinder to actuate the same when the output means is in the brake applied position.
Claim 13
Dependent Claim
136 words
In a system for applying the brakes of a vehicle in response to an abnormal travelling condition in the state of the vehicle: a reversible electric motor, means for energizing the motor in response to the existence of said condition, a housing, a linearly displaceable arm having a rack portion disposed within the housing and operatively connected for reversible displacement relative to the housing by the motor, a rack arm pivotally mounted in the housing, a gear meshing between the rack portion of the displaceable arm and the rack arm, and output means displaceable by the rack arm between brake released and brake applied positions, said output means including at least one member adapted for direct mechanical connection to a master cylinder to actuate the same when the output means is in the brake applied position.
Claim 14
Dependent Claim
27 words
Apparatus as defined in claim 11 wherein the said one member is also adapted for direct mechanical connection to a brake actuator rod for external operation thereby.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |