US3688686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse compacting apparatus
Assignee: Individual
•
Filing: 1970-03-13
•
Granted: 1972-09-05
•
Expires: 1990-03-13
Abstract
Abstract A housing is provided with an internal chamber adapted to accommodate refuse to be compacted. A plunger is mounted in the chamber and is movable from a rest position at one end of the chamber to an advanced position adjacent the other end of the chamber and in which position refuse in the chamber is compacted, and back to its retracted rest position. Operating means is provided for automatically cycling the displacement of the plunger from and to its retracted rest positions. Initiating means is associated with the operating means for initiating the operation of the same.
Inventors
- 👤 David R Ligh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:26
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3003; B30B9/3007; B30B15/00; B30B15/16; B30B9/3057
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
239 words
In a refuse compacting apparatus, in combination, housing means having an internal chamber adapted to accommodate refuse to be compacted and provided with an open end; closure means movable to and from a position closing said open end; plunger means mounted in said chamber and being operable for cyclical displacement from a retracted rest position to an advanced compacting position towards said closure means, and back to said retracted rest position; operating means for automatically cycling the displacement of said plunger means from and to said retracted rest position, including a double-acting cylinder and piston arrangement coupled with said plunger means for displacement of the same between said positions, valve means including a control valve movable between two positions in one of which it supplies fluid under pressure to one side of said cylinder and piston arrangement and in the other of which it supplies fluid under pressure to the other side of said cylinder and piston arrangement, and pressure responsive means operative for moving said control valve from said one to said other position in response to the pressure at said one side exceeding a predetermined limit; and combined initiating and override means associated with said operating means for initiating the operation of the same, and comprising a manually engageable portion mechanically connected to said control valve for manually overriding the operation of said operating means at any stage of displacement thereof at the will of an operator.
Claim 2
Dependent Claim
239 words
In a refuse compacting apparatus, in combination, housing means having an internal chamber adapted to accommodate refuse to be compacted and provided with an open end; closure means movable to and from a position closing said open end; plunger means mounted in said chamber and being operable for cyclical displacement from a retracted rest position to an advanced compacting position towards said closure means, and back to said retracted rest position; operating means for automatically cycling the displacement of said plunger means from and to said retracted rest position, including a double-acting cylinder and piston arrangement coupled with said plunger means for displacement of the same between said positions, valve means including a control valve movable between two positions in one of which it supplies fluid under pressure to one side of said cylinder and piston arrangement and in the other of which it supplies fluid under pressure to the other side of said cylinder and piston arrangement, and pressure responsive means operative for moving said control valve from said one to said other position in response to the pressure at said one side exceeding a predetermined limit; and combined initiating and override means associated with said operating means for initiating the operation of the same, and comprising a manually engageable portion mechanically connected to said control valve for manually overriding the operation of said operating means at any stage of displacement thereof at the will of an operator.
Claim 3
Dependent Claim
41 words
In a refuse compacting apparatus as defined in claim 1, and further comprising safety interlock means cooperating with said closure means and said operating means for preventing operation of the latter when said closure means is in an open position thereof.
Claim 4
Dependent Claim
46 words
In a refuse compacting apparatus as defined in claim 1, said operating means comprising a power unit, and said initiating means being operative for initiating operaTion of said power unit; and wherein said operating means further comprises terminating means for terminating operation of said power unit.
Claim 5
Dependent Claim
67 words
In a refuse compacting apparatus as defined in claim 3, a motor-driven pump constituting said power unit and operative for supplying fluid under pressure to said cylinder and piston arrangement, conduit means connecting said pump with said cylinder and piston arrangement, and valve means in said conduit means operative for reversing operation of said cylinder and piston arrangement upon said plunger means reaching said advanced compacting position.
Claim 6
Dependent Claim
16 words
In a refuse compacting apparatus as defined in claim 3, said terminating means comprising timer means.
Claim 7
Dependent Claim
65 words
In a refuse compacting apparatus as defined in claim 5, said power unit comprising a pump and an electromotor for driving said pump; further comprising electric circuit means for connecting said motor with a source of electrical energy; and wherein said timer means is interposed in said circuit means for interrupting the same upon expiration of a predetermined time following initiation of said operating means.
Claim 8
Dependent Claim
43 words
In a refuse compacting apparatus as defined in claim 1, said combined means being associated with said control valve for moving the same between said positions thereof irrespective of the pressure of fluid at the respective sides of said cylinder and piston arrangement.
Claim 9
Dependent Claim
140 words
In a refuse compacting apparatus as defined in claim 1, said pressure responsive means being an auxiliary piston-and-cylinder unit; further comprising a high-pressure relief valve opening at said predetermined limit; a low-pressure relief valve; first auxiliary conduit means connecting said one side of said cylinder and piston arrangement with said high-pressure relief valve; second auxiliary conduit means connecting said high-pressure relief vale with said low-pressure relief valve; and third auxiliary conduit means connecting said second auxiliary conduit means with said auxiliary unit whereby, when said pressure at said one side exceeds said predetermined limit, said high-pressure relief valve opens and fluid under pressure passes via said secondary auxiliary conduit means and said third auxiliary conduit means to said auxiliary unit, displacing the piston thereof, with said piston effecting movement of said control valve to said other position of the latter.
References Cited (Backward Citations)
US2253617A
Cited
US1182369A
Cited
US2619150A
Cited
US2912037A
Cited
US3070003A
Cited
US3229618A
Cited
US3250414A
Cited
US3228323A
Cited
US3315594A
Cited
US3352230A
Cited
US3384007A
Cited
US3577911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |