US3086543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum breaker
Assignee: California Manufacturing and Equipment Co
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Filing: 1960-03-21
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Granted: 1963-04-23
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 James E Mcauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/102; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
IN COMBINATION WITH AN APPLIANCE CONNECTED IN CIRCUIT WITH A PRESSURIZED POTABLE WATER SYSTEM OF THE TYPE HAVING A DRAIN PIPE CONNECTED TO A SEWER, THAT IMPROVEMENT FOR SAFEGUARDING AGAINST THE POSSIBILITY OF AN ABNORMAL LOW PRESSURE CONDITION IN SAID APPLIANCE EFFECTING A BACK FLOW OF FLUID FROM THE SEWER INTO SAID PRESSURIZED WATER SYSTEM WHICH COMPRISES A VACUUM BREAKER ADAPTED FOR ASSEMBLY BETWEEN SAID SEWER AND THE DRAIN PIPE FROM SAID APPLIANCE, SAID VACUUM BREAKER COMPRISING AN ELONGATED TUBULAR HOUSING FREE OF FLOW RESTRICTIONS AND HAVING AN OUTLET OPENING AT ITS LOWER END AND A PLURALITY OF INLET OPENINGS AT ITS UPPER END, SAID OUTLET OPENING BEING CONNECTED TO SAID SEWER AND ONE OF SAID INLET OPENINGS BEING CONNECTED TO THE DRAINPIPE OF SAID APPLIANCE, VENTING PORT MEANS ADJACENT THE INLET END OF SAID VACUUM BREAKER FOR ADMITTING AIR THEREINTO UPON THE OCCURRENCE OF SUB-ATMOSPHERIC PRESSURE CONDITIONS AT THE INLET END OF SAID VACUUM BREAKER FOR THE PURPOSE OF PREVENTING A LOW PRESSURE CONDITION EXISTING WITHIN SAID INLET TO CAUSE SEWER FLUID TO PASS THEREINTO, THE OTHER OF SAID INLET OPENINGS BEING FOR THE PURPOSE OF DETACHABLY SEATING THEREIN THE SEPARATE DRAIN CONNECTION OF A DIFFERENT APPLIANCE CONNECTED TO SAID PRESSURIZED WATER SUPPLY SYSTEM.
Claim 2
Dependent Claim
205 words
IN COMBINATION WITH AN APPLIANCE CONNECTED IN CIRCUIT WITH A PRESSURIZED POTABLE WATER SYSTEM OF THE TYPE HAVING A DRAIN PIPE CONNECTED TO A SEWER, THAT IMPROVEMENT FOR SAFEGUARDING AGAINST THE POSSIBILITY OF AN ABNORMAL LOW PRESSURE CONDITION IN SAID APPLIANCE EFFECTING A BACK FLOW OF FLUID FROM THE SEWER INTO SAID PRESSURIZED WATER SYSTEM WHICH COMPRISES A VACUUM BREAKER ADAPTED FOR ASSEMBLY BETWEEN SAID SEWER AND THE DRAIN PIPE FROM SAID APPLIANCE, SAID VACUUM BREAKER COMPRISING AN ELONGATED TUBULAR HOUSING FREE OF FLOW RESTRICTIONS AND HAVING AN OUTLET OPENING AT ITS LOWER END AND A PLURALITY OF INLET OPENINGS AT ITS UPPER END, SAID OUTLET OPENING BEING CONNECTED TO SAID SEWER AND ONE OF SAID INLET OPENINGS BEING CONNECTED TO THE DRAINPIPE OF SAID APPLIANCE, VENTING PORT MEANS ADJACENT THE INLET END OF SAID VACUUM BREAKER FOR ADMITTING AIR THEREINTO UPON THE OCCURRENCE OF SUB-ATMOSPHERIC PRESSURE CONDITIONS AT THE INLET END OF SAID VACUUM BREAKER FOR THE PURPOSE OF PREVENTING A LOW PRESSURE CONDITION EXISTING WITHIN SAID INLET TO CAUSE SEWER FLUID TO PASS THEREINTO, THE OTHER OF SAID INLET OPENINGS BEING FOR THE PURPOSE OF DETACHABLY SEATING THEREIN THE SEPARATE DRAIN CONNECTION OF A DIFFERENT APPLIANCE CONNECTED TO SAID PRESSURIZED WATER SUPPLY SYSTEM.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |