US3074728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals
Assignee: Flowserve Corp
•
Filing: 1960-12-19
•
Granted: 1963-01-22
•
Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jacob B Freed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:46
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A DEVICE FOR SEALING A PRESSURE CHAMBER AT A ROTARY SHAFT EXTENDING THROUGH A FIXED CASING, COMPRISING A RING MEMBER ON SAID SHAFT FOR ROTATION THEREWITH, AN AXIALLY MOVABLE SEALING RING ARRANGED FOR RUBBING ENGAGEMENT WITH SAID RING MEMBER AND FORMING A ROTARY SEAL THEREWITH, MEANS FOR URGING THE ENGAGEMENT OF SAID SEALING RING WITH SAID RING MEMBER TO PREVENT THE ESCAPE OF THE CONTENTS OF SAID CHAMBER ALONG SAID SHAFT INCLUDING AN EXPANSIBLE FORCE-TRANSMITTING MEMBER HAVING A MOVABLE PORTION ADJACENT SAID RING ARRANGED TO URGE SAID RING AXIALLY INTO ENGAGEMENT WITH SAID RING MEMBER, MEANS IN SAID FORCE-TRANSMITTING MEMBER FORMING A TOTALLY ENCLOSED COMPARTMENT ADAPTED TO BE FILLED WITH A PRESSURE TRANSMITTING LIQUID UNDER PRESSURE FOR EFFECTING SAID AXIAL MOVEMENT OF SAID SEALING RING, AND MOVABLE WALL MEANS ON SAID FORCE TRANSMITTING MEMBER EXPOSED TO THE PRESSURE IN SAID CHAMBER FOR THE TRANSMISSION OF CHAMBER PRESSURE TO THE LIQUID IN SAID COMPARTMENT.
Claim 2
Independent Claim
153 words
A DEVICE FOR SEALING A PRESSURE CHAMBER AT A ROTARY SHAFT EXTENDING THROUGH A FIXED CASING, COMPRISING A RING MEMBER ON SAID SHAFT FOR ROTATION THEREWITH, AN AXIALLY MOVABLE SEALING RING ARRANGED FOR RUBBING ENGAGEMENT WITH SAID RING MEMBER AND FORMING A ROTARY SEAL THEREWITH, MEANS FOR URGING THE ENGAGEMENT OF SAID SEALING RING WITH SAID RING MEMBER TO PREVENT THE ESCAPE OF THE CONTENTS OF SAID CHAMBER ALONG SAID SHAFT INCLUDING AN EXPANSIBLE FORCE-TRANSMITTING MEMBER HAVING A MOVABLE PORTION ADJACENT SAID RING ARRANGED TO URGE SAID RING AXIALLY INTO ENGAGEMENT WITH SAID RING MEMBER, MEANS IN SAID FORCE-TRANSMITTING MEMBER FORMING A TOTALLY ENCLOSED COMPARTMENT ADAPTED TO BE FILLED WITH A PRESSURE TRANSMITTING LIQUID UNDER PRESSURE FOR EFFECTING SAID AXIAL MOVEMENT OF SAID SEALING RING, AND MOVABLE WALL MEANS ON SAID FORCE TRANSMITTING MEMBER EXPOSED TO THE PRESSURE IN SAID CHAMBER FOR THE TRANSMISSION OF CHAMBER PRESSURE TO THE LIQUID IN SAID COMPARTMENT.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |