Patent US3889829A successfully refreshed from Google Patents.
US3889829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile refuse collection truck
Assignee: Chevron USA Inc
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Filing: 1973-11-26
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Granted: 1975-06-17
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Expires: 1993-11-26
Abstract
Abstract A mobile refuse collection truck has a cage suspended from an arm pivotally mounted at the end of a boom to pick up refuse and transfer it to the truck. Uncontrolled swinging of the cage is prevented by a friction pivotal connection of the arm at the end of the boom in which wear plates are urged against the arm to cause resistance to pivoting of the arm. Means are provided for adjusting the force at which the wear plates are urged against the arm to control the resistance to pivoting.
Inventors
- 👤 Glenn L Dutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/68; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32819; Y10T403/32827; Y10T403/32861; Y10T403/32918
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
225 words
In a mobile refuse collection truck having a boom mounted on and operated from the truck, an arm pivotally mounted at the outer end of the boom, a cage suspended from the outer end of the arm constructed and arranged to pick up refuse, the improvement comprising a pair of spaced flanges extending from the outer end of the boom, each of said flanges having a hole therethrough perpendicular to the boom, a shaft extending through the holes in the flanges, said arm having a disc at its upper end encircling the shaft between the flanges, means securing the disc to the shaft, a wear plate rotatable on the shaft on each side of the disc, a pressure plate slidable axially on the shaft between the wear plate and the flange, a hub extending outwardly from the pressure plate through and beyond the flange, a bushing between the pressure plate and the shaft and covering the outer end of the hub pressure plate, a helical spring encircling the shaft and bearing against the end of the bushing, and a threaded nut engaging threads on the shaft for adjustment of the force exerted by the spring to urge the pressure plate against the wear plate whereby the arm can be rotated but friction between the wear plate and the disc prevents uncontrolled swinging of the arm.
Claim 2
Dependent Claim
225 words
In a mobile refuse collection truck having a boom mounted on and operated from the truck, an arm pivotally mounted at the outer end of the boom, a cage suspended from the outer end of the arm constructed and arranged to pick up refuse, the improvement comprising a pair of spaced flanges extending from the outer end of the boom, each of said flanges having a hole therethrough perpendicular to the boom, a shaft extending through the holes in the flanges, said arm having a disc at its upper end encircling the shaft between the flanges, means securing the disc to the shaft, a wear plate rotatable on the shaft on each side of the disc, a pressure plate slidable axially on the shaft between the wear plate and the flange, a hub extending outwardly from the pressure plate through and beyond the flange, a bushing between the pressure plate and the shaft and covering the outer end of the hub pressure plate, a helical spring encircling the shaft and bearing against the end of the bushing, and a threaded nut engaging threads on the shaft for adjustment of the force exerted by the spring to urge the pressure plate against the wear plate whereby the arm can be rotated but friction between the wear plate and the disc prevents uncontrolled swinging of the arm.
Claim 3
Dependent Claim
210 words
In a mobile refuse collector having a boom mounted on and operated from a refuse truck, and a cage suspended from the outer end of the boom, said cage having pivotally mounted jaws adapted to move between an open position for loading the cage and a closed position for transporting refuse in the cage from a pick-up location to the truck, the improved means for suspending the cage comprising a pair of spaced apart flanges at the end of the boom remote from the truck, each of said flanges having an opening therein through which a substantially horizontal shaft extends, an arm mounted on the shaft between the flanges and extending downwardly therefrom to suspend the cage, said arm having a substantially flat face surrounding and perpendicular to the shaft, a pressure plate mounted on the shaft between the flat face and a flange, said pressure plate being freely slidable on the shaft in an axial direction, a wear plate axially slidable upon the shaft between the pressure plate and the face of the arm, and a compressed spring means adapted to urge the pressure plate against the wear plate whereby friction between the flat face of the arm and the wear plate resists but permits rotation of the arm.
Claim 4
Dependent Claim
210 words
In a mobile refuse collector having a boom mounted on and operated from a refuse truck, and a cage suspended from the outer end of the boom, said cage having pivotally mounted jaws adapted to move between an open position for loading the cage and a closed position for transporting refuse in the cage from a pick-up location to the truck, the improved means for suspending the cage comprising a pair of spaced apart flanges at the end of the boom remote from the truck, each of said flanges having an opening therein through which a substantially horizontal shaft extends, an arm mounted on the shaft between the flanges and extending downwardly therefrom to suspend the cage, said arm having a substantially flat face surrounding and perpendicular to the shaft, a pressure plate mounted on the shaft between the flat face and a flange, said pressure plate being freely slidable on the shaft in an axial direction, a wear plate axially slidable upon the shaft between the pressure plate and the face of the arm, and a compressed spring means adapted to urge the pressure plate against the wear plate whereby friction between the flat face of the arm and the wear plate resists but permits rotation of the arm.
Claim 5
Dependent Claim
61 words
The apparatus as set forth in claim 2 in which a bushing encircles the shaft through the opening in at least one of the flanges, said bushing having a flange extending therefrom over at least a portion of the outer surface of the pressure plate and the compressed spring engages the bushing to urge the pressure plate against the wear plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |