Patent US3726567A successfully refreshed from Google Patents.
US3726567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preventing the over-braking of vehicles with hydraulic brake installations
Assignee: Daimler Benz AG
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Filing: 1970-11-19
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Granted: 1973-04-10
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Expires: 1990-11-19
Abstract
Abstract An installation for preventing excessive braking of vehicles equipped with a hydraulic brake installation, particularly of commercial types of vehicles with a higher center of gravity, in which the pressure in the brake lines is automatically reduced upon exceeding a predetermined deceleration of the vehicle.
Inventors
- 👤 M Burckhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:43
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/72; B60T8/74; Y; Y10; Y10S; Y10S303/00; Y10S303/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
84 words
An installation for preventing the over-braking of vehicles equipped with a set of wheels on an axle and with a fluid pressure brake installation for the wheels, comprising means directly responsive to the longitudinal deceleration of the vehicle, means for generating fluid pressure for controlling brakes of the wheels, and control means responsive to said vehicle longitudinal deceleration means for changing the pressure in a brake line of the vehicle to a brake releasing condition upon exceeding a predetermined longitudinal deceleration of the vehicle.
Claim 2
Dependent Claim
84 words
An installation for preventing the over-braking of vehicles equipped with a set of wheels on an axle and with a fluid pressure brake installation for the wheels, comprising means directly responsive to the longitudinal deceleration of the vehicle, means for generating fluid pressure for controlling brakes of the wheels, and control means responsive to said vehicle longitudinal deceleration means for changing the pressure in a brake line of the vehicle to a brake releasing condition upon exceeding a predetermined longitudinal deceleration of the vehicle.
Claim 3
Dependent Claim
49 words
An installation according to claim 1, characterized in that said control means for changing the pressure includes a three-way valve means arranged in the brake line and responsive to the longitudinal deceleration means, said three-way valve means being operable to divert the brake fluid into a spring-loaded tank means.
Claim 4
Dependent Claim
35 words
An installation according to claim 2, characterized in that the fluid is a liquid and that the tank means can be emptied after termination of a braking operation by way of a check valve means.
Claim 5
Dependent Claim
26 words
An installation according to claim 3, characterized in that a throttling means is provided in a line between the three-way valve means and the tank means.
Claim 6
Dependent Claim
32 words
Installation according to claim 4, characterized in that said control means includes a switch means responsive to the longitudinal deceleration means and that magnetically operated valves are used as three-way valve means.
Claim 7
Dependent Claim
47 words
An installation according to claim 5, characterized in that said longitudinal deceleration means includes a pendulum means, operable to swing substantially in a vehicle longitudinal plane and subjected to the deceleration force for actuating the switch means and thereby, the three-way valve means of said control means.
Claim 8
Dependent Claim
60 words
An installation according to claim 6, characterized in that a permanent magnet is arranged at the pendulum means, and that said switch means is a magnetically operated switch means actuated by said magnet in case of a predetermined deflection of the pendulum means, said magnetically operated switch means being connected in the energizing circuit of the magnetically operated valve means.
Claim 9
Dependent Claim
21 words
An installation according to claim 7, characterized in that said magnetically operated switch means is disposed within a protective gas atmosphere.
Claim 10
Dependent Claim
26 words
An installation according to claim 2, characterized in that a throttling means is provided in a line between the three-way valve means and the tank means.
Claim 11
Dependent Claim
33 words
An installation according to claim 2, characterized in that said control means includes a switch means responsive to the longitudinal deceleration means and that magnetically operated valves are used as three-way valve means.
Claim 12
Dependent Claim
47 words
An installation according to claim 2, characterized in that said longitudinal deceleration means includes a pendulum means, operable to swing substantially in a vehicle longitudinal plane and subject to the deceleration force for actuating a switch means and thereby, the three-way Valve means of said control means.
Claim 13
Dependent Claim
59 words
An installation according to claim 11, characterized in that a permanent magnet is arranged at the pendulum means, and said switch means is a magnetically operated switch means actuated by said magnet in case of a predetermined deflection of the pendulum means, said magnetically operated switch means being connected in the energizing circuit of the magnetically operated valve means.
Claim 14
Dependent Claim
21 words
An installation according to claim 12, characterized in that said magnetically operated switch means is disposed within a protective gas atmosphere.
Claim 15
Dependent Claim
34 words
An installation according to claim 1, characterized in that the vehicle is a commercial-type vehicle with a resultant weight which passes beyond the road and front wheel contact when said predetermined deceleration is exceeded.
Claim 16
Dependent Claim
34 words
An installation according to claim 1, characterized in that the vehicle is a commercial-type vehicle with a resultant weight which passes beyond the road and front wheel contact when said predetermined deceleration is exceeded.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |