US3150686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear pneumatic pressure divider
Assignee: Robertshaw Controls Co
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Filing: 1961-12-15
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Granted: 1964-09-29
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Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Harold S Kachline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:56
CPC Classifications
F; F15; F15B; F15B5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A PNEUMATIC LINEAR PRESSURE DIVIDER COMPRISING A PAIR OF SPACED RELATIVELY SLIDABLE CONCENTRICALLY POSITIONED OUTER AND INNER TUBULAR MEMBERS, EACH HAVING A BORE, SAID INNER MEMBER BEING SEALED AT ONE END AND OPEN AT THE OPPOSITE END TO PROVIDE AN OUTPUT CONTROL PORT AND HAVING AN ORIFICE FORMED INTERMEDIATE ITS ENDS, SAID OUTER MEMBER HAVING A BORE LARGER THAN THE OUTER DIAMETER OF SAID INNER MEMBER TO PROVIDE A CLEARANCE GAP WITH AN INTAKE POINT AND AN EXHAUST POINT AND HAVING A PRESSURE GRADIENT THROUGHOUT ITS EXTEND BETWEEN THE BORE OF THE FIRST MEMBER AND THE OUTER DIAMETER OF THE SECOND MEMBER, AND AN INPUT PORT CONNECTING WITH THE BORE OF SAID OUTER MEMBER CONNECTABLE WITH A SOURCE OF AIR OR THE LIKE UNDER PRESSURE, SAID AIR INPUT FLOWING INTO SAID GAP AT THE INTAKE POINT THEREOF BETWEEN THE MEMBERS, THROUGH SAID ORIFICE AND THE BORE OF SAID INNER MEMBER TO A SUITABLE RECEIVER TO BE PNEUMATICALLY CONTROLLED ACCORDING TO THE OUTPUT CONTROL POSITION OF SAID ORIFICE.
Claim 2
Dependent Claim
167 words
A PNEUMATIC LINEAR PRESSURE DIVIDER COMPRISING A PAIR OF SPACED RELATIVELY SLIDABLE CONCENTRICALLY POSITIONED OUTER AND INNER TUBULAR MEMBERS, EACH HAVING A BORE, SAID INNER MEMBER BEING SEALED AT ONE END AND OPEN AT THE OPPOSITE END TO PROVIDE AN OUTPUT CONTROL PORT AND HAVING AN ORIFICE FORMED INTERMEDIATE ITS ENDS, SAID OUTER MEMBER HAVING A BORE LARGER THAN THE OUTER DIAMETER OF SAID INNER MEMBER TO PROVIDE A CLEARANCE GAP WITH AN INTAKE POINT AND AN EXHAUST POINT AND HAVING A PRESSURE GRADIENT THROUGHOUT ITS EXTEND BETWEEN THE BORE OF THE FIRST MEMBER AND THE OUTER DIAMETER OF THE SECOND MEMBER, AND AN INPUT PORT CONNECTING WITH THE BORE OF SAID OUTER MEMBER CONNECTABLE WITH A SOURCE OF AIR OR THE LIKE UNDER PRESSURE, SAID AIR INPUT FLOWING INTO SAID GAP AT THE INTAKE POINT THEREOF BETWEEN THE MEMBERS, THROUGH SAID ORIFICE AND THE BORE OF SAID INNER MEMBER TO A SUITABLE RECEIVER TO BE PNEUMATICALLY CONTROLLED ACCORDING TO THE OUTPUT CONTROL POSITION OF SAID ORIFICE.
References Cited (Backward Citations)
US1980085A
Cited
US2323115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |