US3747519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trash-compacting apparatus
Assignee: RAM PACK Inc
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Filing: 1971-10-19
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Granted: 1973-07-24
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Expires: 1991-10-19
Abstract
Abstract Apparatus for compacting trash of the type including an elongated hollow cylinder having an open discharge end, a compacting piston longitudinally reciprocable in the cylinder, and a pivotable closure for the discharge end of the cylinder. The discharge end of the cylinder has a rearwardly inclined peripheral cut-out portion, a closure having a rearwardly inclined peripheral flange complementary to and mating with such cut-out portion when the closure is in its closed position. The piston preferably includes on its forward pressure surface a plurality of rearwardly inclined radial ribs defining a discontinuous concave trash-engaging surface.
Inventors
- 👤 W Capps
- 👤 R Hunnam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:28
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3096; B30B9/3003; B30B9/3021
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
Trash compacting apparatus comprising a hollow elongated cylinder having a forward open discharge end; piston means mounted for longitudinal reciprocating movement in the cylinder and having a forward transverse trash-engaging surface facing said discharge end of said cylinder; and closure means pivotally mounted on said cylinder for selectively closing or exposing said discharge end of said cylinder; said cylinder further having at said discharge end a rearwardly inclined cutout portion extending about a portion of its periphery and having a rearwardly inclined forward edge, said closure means comprising a disc-like closure member having a planar rear surface extending completely across the discharge end of said cylinder and a rearwardly extending annular flange extending about a portion of the periphery thereof, said annular flange having an inclined rear edge complementing said cut-out portion of said cylinder and engaging said inclined forward edge of said cut-out portion when said closure means is in a position to close said discharge end of said cylinder.
Claim 2
Dependent Claim
161 words
Trash compacting apparatus comprising a hollow elongated cylinder having a forward open discharge end; piston means mounted for longitudinal reciprocating movement in the cylinder and having a forward transverse trash-engaging surface facing said discharge end of said cylinder; and closure means pivotally mounted on said cylinder for selectively closing or exposing said discharge end of said cylinder; said cylinder further having at said discharge end a rearwardly inclined cutout portion extending about a portion of its periphery and having a rearwardly inclined forward edge, said closure means comprising a disc-like closure member having a planar rear surface extending completely across the discharge end of said cylinder and a rearwardly extending annular flange extending about a portion of the periphery thereof, said annular flange having an inclined rear edge complementing said cut-out portion of said cylinder and engaging said inclined forward edge of said cut-out portion when said closure means is in a position to close said discharge end of said cylinder.
Claim 3
Dependent Claim
124 words
Trash compacting apparatus as defined in claim 1, further comprising actuating means for effecting pivotal movement of said closure means, said actuating means comprising a pair of elongated bracket members disposed on radially opposed sides of said cylinder and extending axially with respect thereto, each of said bracket members having a forward end secured to said closure member at opposite sides thereof, a rearward end pivotally secured to said cylinder rearwardly of said discharge end, and a perpendicular crank arm rigidly secured to the rearward end of its respective bracket member; and a pair of piston-and-cylinder means mounted on said cylinder at opposite sides thereof, each of said piston-and-cylinder means being pivotally connected to one of said crank arms to effect pivotal movement thereof.
Claim 4
Dependent Claim
41 words
Trash compacting apparatus as defined in claim 1, wherein said inclined forward edge of said cut-out portion of said cylinder and said inclined rearward edge of said annular flange are each bevelled rearwardly and radially outwardly with respect to said cylinder.
Claim 5
Dependent Claim
64 words
Trash compacting apparatus as defined in claim 1, wherein said closure means further comprises an annular substantially semi-cylindrical cover member secured to said closure member and extending rearwardly therefrom, said cover member extending rearwardly of said annular flange and abutting against the exterior peripheral surface of said cylinder when said closure member is in said position to close said discharge end of said cylinder.
Claim 6
Dependent Claim
20 words
Trash compacting apparatus as defined in claim 1, wherein said transverse trash-engaging surface of said piston means is generally concave.
Claim 7
Dependent Claim
58 words
Trash compacting apparatus as defined in claim 5, wherein said piston means includes a plurality of radially extending rib members on the forward end surface thereof, each of said rib members having a forward trash-engaging surface inclined rearwardly and radially inwardly, said forward surfaces of said rib members defining said generally concave trash-engaging surface of said piston means.
Claim 8
Dependent Claim
97 words
Trash compacting apparatus comprising a hollow elongated cylinder, piston means mounted for longitudinal reciprocating movement in said cylinder, and stationary abutment means cooperating with said piston means to compact trash disposed therebetween, said piston means having a generally concave trash-engaging surface at its forward end facing said stationary abutment, said piston means including a plurality of radially extending rib members on the forward end thereof, each of said rib members having a forward trash-engaging surface inclined rearwardly and radially inwardly, said forward surfaces of said rib members defining said generally concave trash-engaging surface of said piston means.
Claim 9
Dependent Claim
97 words
Trash compacting apparatus comprising a hollow elongated cylinder, piston means mounted for longitudinal reciprocating movement in said cylinder, and stationary abutment means cooperating with said piston means to compact trash disposed therebetween, said piston means having a generally concave trash-engaging surface at its forward end facing said stationary abutment, said piston means including a plurality of radially extending rib members on the forward end thereof, each of said rib members having a forward trash-engaging surface inclined rearwardly and radially inwardly, said forward surfaces of said rib members defining said generally concave trash-engaging surface of said piston means.
References Cited (Backward Citations)
US1469511A
Cited
US2508877A
Cited
US2705916A
Cited
US3253537A
Cited
US3385208A
Cited
US3527160A
Cited
US3638561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |