US3089435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding hopper gate assembly
Assignee: UNITCAST CORP
•
Filing: 1959-06-09
•
Granted: 1963-05-14
•
Expires: 1979-06-09
Abstract
No abstract record available.
Inventors
- 👤 Walter L Floehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/58; B65D90/587; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A SLIDE GATE ASSEMBLY HAVING A FRAME FIXABLE TO A HOPPER OF A HOPPER CAR ABOUT A BOTTOM OPENING THEREIN, THE COMBINATION OF A SLIDE GATE SLIDABLY MOUNTED IN SAID FRAME, RACK MEANS FIXED TO SAID GATE, A SHAFT CARRIED BY SAID FRAME, PINION MEANS FIXED AGAINST RELATIVE MOVEMENT TO SAID SHAFT AND ENGAGING SAID RACK MEANS FOR DRIVING SAID GATE BETWEEN OPEN AND CLOSED POSITIONS, SAID SHAFT BEING SHIFTABLE RELATIVE TO SAID FRAME FOR DISENGAGING SAID PINION MEANS FROM SAID RACK MEANS AND ENABLING REMOVAL OF SAID GATE, AND GROOVE-INTERRUPTING ABUTMENT MEANS ON SAID RACK MEANS AND ENGAGEABLE WITH SAID PINION MEANS FOR LIMITING OUTWARD MOVEMENT OF SAID GATE RELATIVE TO SAID FRAME.
Claim 2
Dependent Claim
115 words
IN A SLIDE GATE ASSEMBLY HAVING A FRAME FIXABLE TO A HOPPER OF A HOPPER CAR ABOUT A BOTTOM OPENING THEREIN, THE COMBINATION OF A SLIDE GATE SLIDABLY MOUNTED IN SAID FRAME, RACK MEANS FIXED TO SAID GATE, A SHAFT CARRIED BY SAID FRAME, PINION MEANS FIXED AGAINST RELATIVE MOVEMENT TO SAID SHAFT AND ENGAGING SAID RACK MEANS FOR DRIVING SAID GATE BETWEEN OPEN AND CLOSED POSITIONS, SAID SHAFT BEING SHIFTABLE RELATIVE TO SAID FRAME FOR DISENGAGING SAID PINION MEANS FROM SAID RACK MEANS AND ENABLING REMOVAL OF SAID GATE, AND GROOVE-INTERRUPTING ABUTMENT MEANS ON SAID RACK MEANS AND ENGAGEABLE WITH SAID PINION MEANS FOR LIMITING OUTWARD MOVEMENT OF SAID GATE RELATIVE TO SAID FRAME.
References Cited (Backward Citations)
US1623303A
Cited
US1138950A
Cited
US2222280A
Cited
US2869480A
Cited
US2690139A
Cited
US2738736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |