US3349581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable drums and loading and unloading doors therefor
Assignee: Individual
•
Filing: 1965-07-23
•
Granted: 1967-10-31
•
Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Richard E Quinn
- 👤 Elvin H Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
C; C14; C14C; C14C15/00; D; D06; D06B; D06B5/00; D06B2700/00; D06B2700/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN APPARATUS FOR TREATING HIDES WITH LIQUIDS, A DRUM TO BE ROTATED IN A PREDETERMINED DIRECTION AND HAVING A LOADING AND UNLOADING PORT IN ITS PERIPHERY, A GASKET SURROUNDING SAID PORT, HANGER MEANS TRANSVERSELY OF THE DRUM ADJACENT THE LEADING EDGE OF SAID PORT, LATCH MEANS TRANSVERSELY OF THE DRUM ADJACENT THE TRAILING EDGE OF SAID PORT, AND A DOOR FOR SAID PORT, SAID DOOR COMPRISING A MOLDED BODY OF PLASTIC STOCK DIMENSIONED TO OVERLIE SAID GASKET AND SAID PORT AND ARCUATE LENGTHWISE WITH RESPECT TO THE DRUM AXIS, A SERIES OF SPACED PARALLEL TRANSVERSE REINFORCEMENTS INCORPORATED WITHIN SAID BODY, HANGING ELEMENTS DETACHABLY ENGAGED WITH SAID HANGER MEANS, AND TOGGLE MEANS SECURED TO AND DETACHABLY ENGAGED WITH SAID LATCH
Claim 2
Dependent Claim
119 words
IN APPARATUS FOR TREATING HIDES WITH LIQUIDS, A DRUM TO BE ROTATED IN A PREDETERMINED DIRECTION AND HAVING A LOADING AND UNLOADING PORT IN ITS PERIPHERY, A GASKET SURROUNDING SAID PORT, HANGER MEANS TRANSVERSELY OF THE DRUM ADJACENT THE LEADING EDGE OF SAID PORT, LATCH MEANS TRANSVERSELY OF THE DRUM ADJACENT THE TRAILING EDGE OF SAID PORT, AND A DOOR FOR SAID PORT, SAID DOOR COMPRISING A MOLDED BODY OF PLASTIC STOCK DIMENSIONED TO OVERLIE SAID GASKET AND SAID PORT AND ARCUATE LENGTHWISE WITH RESPECT TO THE DRUM AXIS, A SERIES OF SPACED PARALLEL TRANSVERSE REINFORCEMENTS INCORPORATED WITHIN SAID BODY, HANGING ELEMENTS DETACHABLY ENGAGED WITH SAID HANGER MEANS, AND TOGGLE MEANS SECURED TO AND DETACHABLY ENGAGED WITH SAID LATCH
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |