Patent US3169391A successfully refreshed from Google Patents.
US3169391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic power actuated clamping apparatus
Assignee: Westinghouse Air Brake Co
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Filing: 1961-12-20
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Granted: 1965-02-16
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Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Willard P Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:28
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
POWER-OPERATED CLAMPING APPARATUS FOR CLAMPING A PORTED VALVE DEVICE TO BE TESTED IN SEALED RELATION TO A CORRESPONDINGLY PORTED TEST BRACKET ON WHICH SAID VALVE IS MOUNTED, SAID CLAMPING APPARATUS COMPRISING A MEMBER HAVING A CLAMPING FACE ON WHICH A VALVE DEVICE MAY BE MOUNTED, A PLURALITY OF VALVE MOUNTING STUDS PROJECTING IN SPACED RELATION FROM THE CLAMPING FACE OF SAID MEMBER FOR EXTENSION THROUGH CORRESPONDING SECURED BOLT PASSAGES IN THE VALVE DEVICE, SAID STUDS BEING TUBULAR IN FORM, RECIPROCABLE RODS IN EACH OF SAID STUDS, LATCH MEANS CARRIED BY EACH SAID ROD AND COOPERABLE WITH THE STUD AS THE ROD SHIFTS IN OPPOSITE DIRECTIONS IN THE STUD TO PROJECT OUT OF SAID MEANS FOR SHIFTING SAID RODS SIMULSTUD, AND POWER MEANS FOR SHIFTING SAID RODS SIMULTANEOUSLY IN A DIRECTION TO FIRST CAUSE THE SEVERAL LATCH MEANS TO PROJECT FROM THE RESPECTIVE STUDS AND THEN ENGAGE THE VALVE DEVICE TO TRANSMIT TO THE VALVE DEVICE A CLAMPING FORCE EXERTED BY THE POWER MEANS.
Claim 2
Dependent Claim
163 words
POWER-OPERATED CLAMPING APPARATUS FOR CLAMPING A PORTED VALVE DEVICE TO BE TESTED IN SEALED RELATION TO A CORRESPONDINGLY PORTED TEST BRACKET ON WHICH SAID VALVE IS MOUNTED, SAID CLAMPING APPARATUS COMPRISING A MEMBER HAVING A CLAMPING FACE ON WHICH A VALVE DEVICE MAY BE MOUNTED, A PLURALITY OF VALVE MOUNTING STUDS PROJECTING IN SPACED RELATION FROM THE CLAMPING FACE OF SAID MEMBER FOR EXTENSION THROUGH CORRESPONDING SECURED BOLT PASSAGES IN THE VALVE DEVICE, SAID STUDS BEING TUBULAR IN FORM, RECIPROCABLE RODS IN EACH OF SAID STUDS, LATCH MEANS CARRIED BY EACH SAID ROD AND COOPERABLE WITH THE STUD AS THE ROD SHIFTS IN OPPOSITE DIRECTIONS IN THE STUD TO PROJECT OUT OF SAID MEANS FOR SHIFTING SAID RODS SIMULSTUD, AND POWER MEANS FOR SHIFTING SAID RODS SIMULTANEOUSLY IN A DIRECTION TO FIRST CAUSE THE SEVERAL LATCH MEANS TO PROJECT FROM THE RESPECTIVE STUDS AND THEN ENGAGE THE VALVE DEVICE TO TRANSMIT TO THE VALVE DEVICE A CLAMPING FORCE EXERTED BY THE POWER MEANS.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |