# US 4,396,342 A · Swingably supported pusher actuator for refuse transporting vehicle

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- Number: US 4,396,342 A
- Document ID: US4396342A
- Status: Granted
- Kind: A
- Application number: 06/189,141
- Filed: 1980-09-22
- Granted: 1983-08-02
- Earliest claimed: 1980-09-22
- Assignees: Dempster Systems Inc.
- Inventors: Donald J. Henderson
- Web page: https://patentgrep.com/patent/US4396342A

## CPC

- B65F 3/28: by a lengthwise movement of a wall, e.g. a plate, a piston, or the like (for charging B65F3/20)
- B65F: GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE (disinfecting refuse A61L; refuse disintegrators B02C; sorting refuse B03B; B07B; handcarts for transporting refuse receptacles B62B; sack holders B65B67/00; converting refuse into fertilisers C05F; converting refuse into solid fuels C10L; sewers, cesspools E03F; arrangements in buildings for the disposal of refuse E04F17/10; refuse-consuming furnaces F23G; {for surgical articles A61B50/36})

## Abstract

An actuator is extensible in a first position within a truck receptacle to move a pusher to a primary rearward position in the receptacle; and the actuator is extensible in a second position in the receptacle to move the pusher to a secondary rearward position in the receptacle, said secondary position located closer to a discharge opening than said primary position. Swingable means is provided, and to which the actuator is operatively connected, for swinging that connection to the actuator between the first and second positions.

## Claims

### Claim 1

In a self-contained refuse handling and transporting apparatus that includes a truck chassis mounting an elongated, box-shaped receptacle having a refuse loading opening near the receptacle front and a normally closed refuse discharge opening at the receptacle rear, a pusher in said receptacle and an extensible actuator in the receptacle and operatively connected to the pusher to move it longitudinally to displace refuse toward said discharge opening, the improvement comprising:
(a) swingable means to which said actuator is also operatively connected for swinging its connection to the actuator from a first position relatively forwardly in the receptacle to a second position, closer to said discharge opening than said forward position,
(b) whereby the actuator is extensible in said first position to move the pusher to a primary rearward position in the receptacle, and the actuator is extensible in said second position to move the pusher to a secondary rearward position in the receptacle, said secondary position located closer to said discharge opening than said primary position,
(c) and holder means for releasably holding the swingable means in said second position while the actuator is being extended to move the pusher to said secondary position.

### Claim 2 (depends on 1)

The improvement of claim 1 wherein said holder means includes interfitting elements carried by the swingable means and by the receptacle.

### Claim 3 (depends on 2)

The improvement of claim 2 wherein said elements comprise a receiver on the receptacle, opening toward the interior of the receptacle, and a pin on said swingable means and movable into the receiver, and means to displace the pin into and out of the receiver.

### Claim 4 (depends on 3)

The improvement of claim 3 wherein the receiver has a wall tapering longitudinally generally toward said discharge opening to release refuse becoming entrapped in said receiver.

### Claim 5 (depends on 1)

The improvement of claim 1 wherein said swingable means includes at least one swinging arm, and a scissors linkage connected between said arm and a fixed frame part associated with the receptacle.

### Claim 6 (depends on 5)

The improvement of claim 5 wherein the scissors linkage is substantially fully extended in said second position of the swingable arm, and including yieldable means biasing said extended scissors linkage toward partially collapsed condition.

### Claim 7 (depends on 6)

The improvement of claim 6 including means anchoring said swingable means to swing between said first and second positions.

### Claim 8 (depends on 1)

The improvement of claim 1 wherein said swingable means includes two swingable arms, and a cross shaft extending therebetween, the holder means being adapted to releasably hold the arms and cross shaft in fixed position relative to the receptacle in each of said first and second positions.

### Claim 9 (depends on 8)

The improvement of claim 8 wherein said holder means comprises at least one pin on the cross shaft, and retainers on the receptacle forming recesses to receive the pin in said first and second positions.

### Claim 10 (depends on 9)

The improvement of claim 9 wherein one retainer has a first wall to block pin displacement forwardly during actuator extension, and a second wall angled to release entrapped refuse in a rearward direction.