US3582152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for controlling two valves for the prevention of the blocking of brakes
Assignee: Daimler Benz AG
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Filing: 1969-04-24
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Granted: 1971-06-01
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Expires: 1989-04-24
Abstract
Abstract An installation for preventing the blocking of brakes, in which a first valve is connected in the brake pressure medium line leading to the brake cylinder and a second valve is connected with this line between the first valve and the brake cylinder while the valves are so controlled that the first normally open valve is closed upon the occurrence of a lower slippage while the second valve, which is normally closed, is opened upon the occurrence of a higher slippage.
Inventors
- 👤 Manfred H Burckhardt
- 👤 Hans-Jorg Florus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/42; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613; B60T8/72; B60T8/74
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
An installation for the control of valves of which the first valve is connnected in a brake pressure medium line that leads from a master brake cylinder to the brake cylinder of a wheel of a motor vehicle, and of which the second valve is connected to the brake pressure medium line between the first valve and the corresponding brake cylinder and leads to a brake medium tank, and which further includes slippage-measuring means for controlling the two valves, characterized by a first slippagemeasuring means responding to a lower slippage which is operatively connected with the first valve and second slippagemeasuring means responding to a higher slippage and operatively connected with the second valve.
Claim 2
Dependent Claim
114 words
An installation for the control of valves of which the first valve is connnected in a brake pressure medium line that leads from a master brake cylinder to the brake cylinder of a wheel of a motor vehicle, and of which the second valve is connected to the brake pressure medium line between the first valve and the corresponding brake cylinder and leads to a brake medium tank, and which further includes slippage-measuring means for controlling the two valves, characterized by a first slippagemeasuring means responding to a lower slippage which is operatively connected with the first valve and second slippagemeasuring means responding to a higher slippage and operatively connected with the second valve.
Claim 3
Dependent Claim
26 words
An installation according to claim 1, characterized in that said first valve is a normally open valve and the second valve is a normally closed valve.
Claim 4
Dependent Claim
17 words
An installation according to claim 2, characterized by rotary-acceleration measuring means operatively connected with said second valve.
Claim 5
Dependent Claim
16 words
An installation according to claim 3, characterized in that said acceleration-measuring means has a threshold value.
Claim 6
Dependent Claim
31 words
An installation according to claim 4, characterized in that the lower slippage is about 5 percent the higher slippage about 15 percent and the acceleration threshold value about 30 Radians-sec. 2.
Claim 7
Dependent Claim
111 words
An installation according to claim 5, characterized in that the slippage-measuring means for each wheel includes a voltage generator, the voltage generators of all wheels being connected by way of rectifier means with a maximum voltage line, and two amplifier means for each wheel, the first amplifier means responding to the lower slippage and the second amplifier means to the higher slippage, the first amplifier means being operatively connected with the first valve, and the second amplifier means with the the second valve, and in that the generator of the wheel associated with the two amplifier means is operatively connected with a second input of each of the two amplifier means.
Claim 8
Dependent Claim
20 words
An installation according to claim 6, wherein the rotary-acceleration measuring means includes a condenser and a series-connected operational amplifier means.
Claim 9
Dependent Claim
109 words
An installation according to claim 1, characterized in that the slippage-measuring means for each wheel includes a voltage generator, the voltage generators of all wheels being connected by way of rectifier means with a maximum voltage line, and two amplifier means for each wheel, the first amplifier means responding to the lower slippage and the second amplifier means to the higher slippage, the first amplifier means being operatively connected with the first valve, and the second amplifier means with the second valve, and in the generator of the wheel associated with the two amplifier means is operatively connected with a second input of each of the two amplifier means.
Claim 10
Dependent Claim
17 words
An installation according to claim 8, characterized by rotary-acceleration measuring means operatively connected with said second valve.
Claim 11
Dependent Claim
20 words
An installation according to claim 9, wherein the rotary-acceleration measuring means includes a condenser and a series-connected operational amplifier means.
Claim 12
Dependent Claim
16 words
An installation according to claim 9, characterized in that said acceleration-measuring means has a threshold value.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |