Patent US3743047A successfully refreshed from Google Patents.
US3743047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-operated brake for automobiles
Assignee: Individual
•
Filing: 1970-09-15
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Granted: 1973-07-03
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Expires: 1990-09-15
Abstract
Abstract The emergency or parking brake of a vehicle is biased by a spring means to the active or ''''on'''' position. When the automobile door adjacent the driver''s seat is closed, the spring means is rendered ineffective, but whenever the door is opened, the spring means is able to apply the brake automatically for the purpose of avoiding accidents.
Inventors
- 👤 A Dapolito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:40
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
A door-controlled safety brake mechanism for automobiles comprising a substantially horizontally disposed guide tube mountable in the interior of an automobile door and provided at one end with a mounting plate adapted for attachment to a front edge flange of the door, said mounting plate having a central opening, a compressible coil spring slightly smaller than the bore of the tube within the tube and having one end bearing against said mounting plate, a somewhat flexible cable extending forwardly through the bore of the spring through the opening of the mounting plate and through a passageway of the door frame, a button element secured to the rear end of the cable and Bearing on the corresponding end of the spring remote from the mounting plate, and means for attaching the forward end of the cable to a pivoted emergency brake setting member within the automobile forwardly of the door and door opening, wherein the opening of the door will cause the cable to actuate the brake setting member to a brake on position.
Claim 2
Dependent Claim
173 words
A door-controlled safety brake mechanism for automobiles comprising a substantially horizontally disposed guide tube mountable in the interior of an automobile door and provided at one end with a mounting plate adapted for attachment to a front edge flange of the door, said mounting plate having a central opening, a compressible coil spring slightly smaller than the bore of the tube within the tube and having one end bearing against said mounting plate, a somewhat flexible cable extending forwardly through the bore of the spring through the opening of the mounting plate and through a passageway of the door frame, a button element secured to the rear end of the cable and Bearing on the corresponding end of the spring remote from the mounting plate, and means for attaching the forward end of the cable to a pivoted emergency brake setting member within the automobile forwardly of the door and door opening, wherein the opening of the door will cause the cable to actuate the brake setting member to a brake on position.
Claim 3
Dependent Claim
19 words
The structure as defined by claim 1, and a protective sheathing on the cable substantially for its entire length.
Claim 4
Dependent Claim
46 words
The structure as defined by claim 1, and the rear end of said tube being open, said spring storing energy to set the emergency brake when the door is opened and also serving as a lost motion connection between the door and said brake setting member.
Claim 5
Dependent Claim
40 words
A door-controlled safety brake mechanism as claimed in claim 1 wherein said means for attaching the forward end of the cable comprises an adjustable clevis on the forward end of the cable adapted for attachment to said brake setting 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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |