Patent US3274922A successfully refreshed from Google Patents.
US3274922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse compactor
Assignee: Individual
•
Filing: 1964-06-19
•
Granted: 1966-09-27
•
Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Sarah G Hefner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:35
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3057; B30B9/3003; B30B9/3007; B30B9/3096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A REFUSE COMPACTOR COMPRISING: A SUPPORT FRAME, A CONTAINER FIXEDLY MOUNTED ON SAID FRAME HAVING A PIVOTALLY SUPPORTED DOOR MEMBER COVERING THE BOTTOM END THEREOF AND AN ACCESS DOOR NEAR THE TOP END THEREOF, A PLATEN MEMBER, MEANS FOR SLIDABLY SUPPORTING SAID PLATEN MEMBER WITHIN SAID CONTAINER FOR MOTION ALONG THE LONGITUDINAL AXIS THEREOF, HYDRAULIC DRIVE MEANS FOR DRIVING SAID PLATEN ALONG SAID LONGITUDINAL AXIS, SAID DRIVE MEANS INCLUDING A HYDRAULIC PUMP AND A REVERSIBLE ELECTRICAL MOTOR FOR DRIVING SAID PUMP, AN ELECTRICAL POWER SOURCE CONNECTED TO SAID MOTOR, MEANS FOR MAINTAINING SAID ACCESS DOOR LOCKED WHEN SAID PLATEN IS IN OTHER THAN A PREDETERMINED POSITION, AND MEANS FOR AUTOMATICALLY REVERSING THE DRIVING DIRECTION OF SAID HYDRAULIC DRIVE WHEN THE COMPACTING FORCE APPLIED BY SAID PLATEN EXCEEDS A PREDETERMINED MAGNITUDE, SAID REVERSING MEANS INCUDING A PRESSURE SENSITIVE SWITCH RESPONSIVE TO THE HYDRAULIC PRESSURE IN
Claim 2
Dependent Claim
144 words
A REFUSE COMPACTOR COMPRISING: A SUPPORT FRAME, A CONTAINER FIXEDLY MOUNTED ON SAID FRAME HAVING A PIVOTALLY SUPPORTED DOOR MEMBER COVERING THE BOTTOM END THEREOF AND AN ACCESS DOOR NEAR THE TOP END THEREOF, A PLATEN MEMBER, MEANS FOR SLIDABLY SUPPORTING SAID PLATEN MEMBER WITHIN SAID CONTAINER FOR MOTION ALONG THE LONGITUDINAL AXIS THEREOF, HYDRAULIC DRIVE MEANS FOR DRIVING SAID PLATEN ALONG SAID LONGITUDINAL AXIS, SAID DRIVE MEANS INCLUDING A HYDRAULIC PUMP AND A REVERSIBLE ELECTRICAL MOTOR FOR DRIVING SAID PUMP, AN ELECTRICAL POWER SOURCE CONNECTED TO SAID MOTOR, MEANS FOR MAINTAINING SAID ACCESS DOOR LOCKED WHEN SAID PLATEN IS IN OTHER THAN A PREDETERMINED POSITION, AND MEANS FOR AUTOMATICALLY REVERSING THE DRIVING DIRECTION OF SAID HYDRAULIC DRIVE WHEN THE COMPACTING FORCE APPLIED BY SAID PLATEN EXCEEDS A PREDETERMINED MAGNITUDE, SAID REVERSING MEANS INCUDING A PRESSURE SENSITIVE SWITCH RESPONSIVE TO THE HYDRAULIC PRESSURE IN
References Cited (Backward Citations)
US2253617A
Cited
US1895627A
Cited
US2763202A
Cited
US2813569A
Cited
US2800159A
Cited
US2817288A
Cited
US2916985A
Cited
US3025837A
Cited
US3010665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |