Patent US3921515A successfully refreshed from Google Patents.
US3921515A
Expired / Lapsed
US
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Compactor
Assignee: General Electric Co
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Filing: 1974-04-26
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Granted: 1975-11-25
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Expires: 1994-04-26
Abstract
Abstract There is disclosed a domestic refuse compactor having an improved mechanism for compressing refuse in an open top container. The mechanism comprises a pressure plate for contacting the refuse, a screw member in driving engagement with the pressure plate, means for reciprocating the screw and a linkage mechanism independent of the screw for maintaining the pressure plate generally horizontal.
Inventors
- 👤 William A Eckerle
- 👤 Albert L Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:52
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/306; B30B9/3064; B30B15/00; B30B15/007; B30B15/06; B30B15/068
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
A compactor comprising a frame providing a compacting chamber having an access opening thereinto; a door mounted for movement between positions opening and closing the access opening; means for holding an open top container within the chamber; a pressure plate for movement into and out of the container for compressing refuse therein; means for vertically reciprocAting the plate including a generally vertical screw and means mounting the plate on the screw; and means for driving the screw; and means bearing between the plate and the frame independently of the screw for maintaining the plate generally horizontal during downward movement into the container, said plate maintaining means comprising a first reaction structure rigid with the pressure plate providing a first generally horizontal trackway therealong; a second reaction structure rigid with the frame providing a second trackway therealong parallel to the first trackway; a scissors linkage comprising first and second links pivoted together intermediate the ends thereof; means mounting the upper ends of the links in the second trackway; and means mounting the lower ends of the links in the first trackway.
Claim 2
Dependent Claim
180 words
A compactor comprising a frame providing a compacting chamber having an access opening thereinto; a door mounted for movement between positions opening and closing the access opening; means for holding an open top container within the chamber; a pressure plate for movement into and out of the container for compressing refuse therein; means for vertically reciprocAting the plate including a generally vertical screw and means mounting the plate on the screw; and means for driving the screw; and means bearing between the plate and the frame independently of the screw for maintaining the plate generally horizontal during downward movement into the container, said plate maintaining means comprising a first reaction structure rigid with the pressure plate providing a first generally horizontal trackway therealong; a second reaction structure rigid with the frame providing a second trackway therealong parallel to the first trackway; a scissors linkage comprising first and second links pivoted together intermediate the ends thereof; means mounting the upper ends of the links in the second trackway; and means mounting the lower ends of the links in the first trackway.
Claim 3
Dependent Claim
11 words
The compactor of claim 1 wherein the mounting means comprise wheels.
Claim 4
Dependent Claim
50 words
The compactor of claim 1 wherein the maintaining means further comprises a third link pivotally connected at one end thereof to the first reaction structure at a location coplanar with the first trackway and at the other end thereof to the first link, the second and third links being parallel.
Claim 5
Dependent Claim
21 words
The compactor of claim 3 wherein the pivot axis of the third link at the one end thereof intersects the screw.
Claim 6
Dependent Claim
20 words
The compactor of claim 1 wherein the first and second links are pivoted together about an axis intersecting the screw.
Claim 7
Dependent Claim
37 words
The compactor of claim 1 wherein the first link comprises first and second plates on opposite sides of the screw and upper and lower cross members connecting the plates together adjacent the upper and lower ends thereof.
Claim 8
Dependent Claim
30 words
The compactor of claim 1 wherein the second link comprises a pair of members, box-shaped in cross-section, on opposite sides of the screw and means connecting the box-shaped members together.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |