US3273950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braking installation for vehicles
Assignee: Robert Bosch GmbH
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Filing: 1964-09-17
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Granted: 1966-09-20
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Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Vielmo Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:16
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/18; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/261; B60T13/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
IN A BRAKING ASSEMBLY FOR VEHICLES, IN COMBINATION, A BRAKING UNIT INCLUDING FLUID-PRESSURE BRAKE MEANS AND SPRING-PRESSURE BRAKE MEANS; A SOURCE OF FLUID PRESSURE; CONDUIT MEANS COMMUNICATING WITH SAID SOURCE OF FLUID PRESSURE AND SAID FLUID-PRESSURE BRAKE MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SAID FLUID-PRESSURE BRAKE MEANS SO AS TO ACTUATE THE LATTER WHEN THE FLUID PRESSURE OF THE FLUID SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS IS INCREASED TO A PREDETERMINED PRESSURE; OPERATOR ACTUATOR VALVE MEANS IN SAID CONDUIT MEANS FOR OPENING THE LATTER TO INCREASE THE FLUID PRESSURE OF FLUID SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS TO BRAKE THE VEHICLE WITH THE FLUID-PRESSURE BRAKE MEANS OF SAID UNIT; AND MEANS MAINTAINING SAID SPRING-PRESSURE BRAKE MEANS INOPERATIVE WHILE THE FLUID PRESSURE OF SAID FLUID IN SAID CONDUIT MEANS SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS DURING ACTUATION OF SAID VALVE MEANS IS AT LEAST EQUAL TO SAID PREDETERMINED PRESSURE BUT RESPONDING AUTOMATICALLY TO ACTUATION OF SAID OPERATOR ACTUATED VALVE MEANS UPON A DROP OF PRESSURE OF THE FLUID IN SAID CONDUIT MEANS BELOW SAID PREDETERMINED PRESSURE FOR RENDERING SAID SPRING-PRESSURE BRAKE MEANS AUTOMATICALLY OPERATIVE.
Claim 2
Dependent Claim
184 words
IN A BRAKING ASSEMBLY FOR VEHICLES, IN COMBINATION, A BRAKING UNIT INCLUDING FLUID-PRESSURE BRAKE MEANS AND SPRING-PRESSURE BRAKE MEANS; A SOURCE OF FLUID PRESSURE; CONDUIT MEANS COMMUNICATING WITH SAID SOURCE OF FLUID PRESSURE AND SAID FLUID-PRESSURE BRAKE MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SAID FLUID-PRESSURE BRAKE MEANS SO AS TO ACTUATE THE LATTER WHEN THE FLUID PRESSURE OF THE FLUID SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS IS INCREASED TO A PREDETERMINED PRESSURE; OPERATOR ACTUATOR VALVE MEANS IN SAID CONDUIT MEANS FOR OPENING THE LATTER TO INCREASE THE FLUID PRESSURE OF FLUID SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS TO BRAKE THE VEHICLE WITH THE FLUID-PRESSURE BRAKE MEANS OF SAID UNIT; AND MEANS MAINTAINING SAID SPRING-PRESSURE BRAKE MEANS INOPERATIVE WHILE THE FLUID PRESSURE OF SAID FLUID IN SAID CONDUIT MEANS SUPPLIED TO SAID FLUID-PRESSURE BRAKE MEANS DURING ACTUATION OF SAID VALVE MEANS IS AT LEAST EQUAL TO SAID PREDETERMINED PRESSURE BUT RESPONDING AUTOMATICALLY TO ACTUATION OF SAID OPERATOR ACTUATED VALVE MEANS UPON A DROP OF PRESSURE OF THE FLUID IN SAID CONDUIT MEANS BELOW SAID PREDETERMINED PRESSURE FOR RENDERING SAID SPRING-PRESSURE BRAKE MEANS AUTOMATICALLY OPERATIVE.
References Cited (Backward Citations)
US3198086A
Cited
US3181426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |