Patent US2746986A successfully refreshed from Google Patents.
US2746986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-(meta-hydroxyphenyl)-beta-methylamino-ethanol cyclohexylsulfamate
Assignee: SAHYUN
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Filing: 1952-06-02
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Granted: 1956-05-22
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Expires: 1972-06-02
Abstract
No abstract record available.
Inventors
- 👤 Sahyun Melville
- 👤 John A Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:54
CPC Classifications
C; C07; C07C; C07C307/00; C07C307/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
3 words
LEVO -A- (META-HYDROXYPHENYL)-B-METHYLAMINOETH-
Claim 2
Dependent Claim
3 words
LEVO -A- (META-HYDROXYPHENYL)-B-METHYLAMINOETH-
Claim 3
Dependent Claim
221 words
A DOOR LOCKING DEVICE FOR DOORS OF COKING CHAMBERS OF HORIZONTAL COKE OVENS COMPRISING AN AXIALLY MOVABLE LATCH BOLT MEMBER, A LATCH BAR HUB MOUNTED ON SAID BOLT MEMBER, AND A LOCK SPRING COOPERATING WITH SAID HUB WHEREBY THE DOOR IS KEPT CLOSE TO THE DOOR FRAME OF THE OVEN CHAMBER BY PRESSURE OF SAID SPRING BETWEEN THE DOOR, AND SAID HUB IN LOCKING POSITION OF THE DOOR AND HUB, CHARACTERIZED BY A REVERSIBLE LATCH BAR HUB THAT IS REVERSIBLY MOUNTABLE ON SAID AXIALLY MOVABLE LATCH BOLT MEMBER, AN ABUTMENT MEMBER ON THE AXIALLY MOVABLE LATCH BOLT MEMBER AND A COORPERATING ABUTMENT ON THE LATCH BAR HUB WHICH COACT, IN ONE POSITION OF THE LATCH BAR HUB, TO TRANSMIT FORCE TO THE SPRING TO COMPRESS THE SAME TO RELEASE THE LATCH BAR HUB TO UNLOCKING POSITION RELATIVE TO THE DOOR, UPON AXIAL MOVEMENT OF THE AXIALLY MOVABLE LATCH BOLT MEMBER IN ONE DIRECTION, AND WHICH COACT IN THE REVERSED POSITION OF THE LATCH BAR HUB ON THE AXIALLY MOVABLE LATCH BOLT MEMBER TO TRANSMIT FORCE OF THE LATTER TO THE LATCH BAR HUB TO LOCK THE SAME WITH OMISSION OF THE LOCK ACTION OF THE LOCK SPRING, UPON AXIAL MOVEMENT OF THE AXIALLY MOVABLE LATCH BOLT MEMBER IN THE OPPOSITE DIRECTION TO THE DIRECTION IT MOVES TO COMPRESS SAID LOCK SPRING.
Claim 4
Dependent Claim
221 words
A DOOR LOCKING DEVICE FOR DOORS OF COKING CHAMBERS OF HORIZONTAL COKE OVENS COMPRISING AN AXIALLY MOVABLE LATCH BOLT MEMBER, A LATCH BAR HUB MOUNTED ON SAID BOLT MEMBER, AND A LOCK SPRING COOPERATING WITH SAID HUB WHEREBY THE DOOR IS KEPT CLOSE TO THE DOOR FRAME OF THE OVEN CHAMBER BY PRESSURE OF SAID SPRING BETWEEN THE DOOR, AND SAID HUB IN LOCKING POSITION OF THE DOOR AND HUB, CHARACTERIZED BY A REVERSIBLE LATCH BAR HUB THAT IS REVERSIBLY MOUNTABLE ON SAID AXIALLY MOVABLE LATCH BOLT MEMBER, AN ABUTMENT MEMBER ON THE AXIALLY MOVABLE LATCH BOLT MEMBER AND A COORPERATING ABUTMENT ON THE LATCH BAR HUB WHICH COACT, IN ONE POSITION OF THE LATCH BAR HUB, TO TRANSMIT FORCE TO THE SPRING TO COMPRESS THE SAME TO RELEASE THE LATCH BAR HUB TO UNLOCKING POSITION RELATIVE TO THE DOOR, UPON AXIAL MOVEMENT OF THE AXIALLY MOVABLE LATCH BOLT MEMBER IN ONE DIRECTION, AND WHICH COACT IN THE REVERSED POSITION OF THE LATCH BAR HUB ON THE AXIALLY MOVABLE LATCH BOLT MEMBER TO TRANSMIT FORCE OF THE LATTER TO THE LATCH BAR HUB TO LOCK THE SAME WITH OMISSION OF THE LOCK ACTION OF THE LOCK SPRING, UPON AXIAL MOVEMENT OF THE AXIALLY MOVABLE LATCH BOLT MEMBER IN THE OPPOSITE DIRECTION TO THE DIRECTION IT MOVES TO COMPRESS SAID LOCK SPRING.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |