US3572529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front-end loading refuse vehicle
Assignee: Individual
•
Filing: 1969-02-03
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Granted: 1971-03-30
•
Expires: 1989-02-03
Abstract
Abstract A refuse vehicle having a body with a top opening and provided with a lift arm at each side whose rear ends are pivotally connected to the vehicle and whose forward ends extend beyond the front end of the vehicle when the arms are in lowered position. The lift arms carry vertically swingable tilt arms which extend forwardly from the front ends of the lift arms for engagement with a container which is to be lifted and emptied into the top opening of the body. The top opening has a hinged door which opens to allow dumping of the container through the top opening. An electropneumatic-hyraulic system is provided for operating the loading mechanism automatically to lift the container, level the container during the lifting of the same, open the top door and invert the container through the top opening. The system may further operate automatically to redeposit the container on the ground and close the top door. The electropneumatic-hydraulic system includes a valve bank having hydraulic valves, operated by pressure cylinders which are supplied with air under pressure from a source of such air under the control of valves which are electrically operated. The vehicle is provided with rests for the front ends of the lift arms to prevent damage to the equipment due to bouncing or vertical oscillation of the lift arms when the vehicle is moving over rough grounds or bumps and means is also provided for holding the front ends of the lift arms in somewhat elevated positions when a container is positioned thereon to hold the container clear of the ground when the vehicle is to be used for collecting refuse by moving the vehicle along the street while loading the container manually. The vehicle may have a cab at the front end which is provided with a forwardly tiltable body to allow access to an engine beneath the cab and the cab body is provided with a rub-rail at the front to protect the same against damage by accidental engagement with a container being lifted. The rub-rail is hinged or articulated to allow the cab body to be tilted to open position without disconnecting the rub-rail. The operating system is designed to permit manual control of the movements of the loading mechanism at any stage of operation.
Inventors
- 👤 Orin M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:10
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/162; B65; B65F; B65F3/00; B65F3/14; B65F3/20; B65F3/201; B65F3/24; B65F3/28; B65F3/02; B65F2003/0263; B65F2003/0279
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
296 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; power means for imparting vertical swinging movement to said lift arms; power means positioned for coaction with said fork arms and said lift arms to swing said fork arms vertically; and means for actuating said power means to cause said lift arms to move upwardly from said lower position with said fork arms in said forwardly extending position and to arrest such upward movement when the lift arms reach a predetermined position between said upper and lower positions, said actuating means being responsive to such arrest of said upward movement to cause said power means to move said fork arms to move said container to a substantially level position and being responsive to such leveling movement of said fork arms to cause said power means to resume the upward movement of said lift arms.
Claim 2
Dependent Claim
296 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; power means for imparting vertical swinging movement to said lift arms; power means positioned for coaction with said fork arms and said lift arms to swing said fork arms vertically; and means for actuating said power means to cause said lift arms to move upwardly from said lower position with said fork arms in said forwardly extending position and to arrest such upward movement when the lift arms reach a predetermined position between said upper and lower positions, said actuating means being responsive to such arrest of said upward movement to cause said power means to move said fork arms to move said container to a substantially level position and being responsive to such leveling movement of said fork arms to cause said power means to resume the upward movement of said lift arms.
Claim 3
Dependent Claim
88 words
The front-end loader mechanism as claimed in claim 1 including: closure means movably mounted on said body for movement into and out of closing relation to said opening; and power means for opening And closing said closure means, and wherein said actuating means includes means responsive to said leveling movement of said fork arms to actuate said power means to open said closure means and means responsive to the opening of said closure means to cause said power means to resume the upward movement of said lift arms.
Claim 4
Dependent Claim
53 words
The front-end loader mechanism as claimed in claim 2 including: latching means positioned for coaction with said body and closure means to releasably hold the closure means in closed position; and means responsive to said leveling movement of said fork arms to release said latching means when said container reaches said level position.
Claim 5
Dependent Claim
340 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; power means for imparting vertical swinging movement to said lift arms; power means positioned for coaction with said fork arms and said lift arms to swing said fork arms vertically; means for actuating said power means to cause said lift arms to move upwardly from said lower position with said fork arms in said forwardly extending position and to arrest such upward movement when the lift arms reach a predetermined position between said upper and lower positions said actuating means being responsive to such arrest of said upward movement to cause said power means to move said fork arms to move said container to a substantially level position closure means movably mounted on said body for movement into and out of closing relation to said opening; closure operating means responsive to arrest of said upward movement to open said closure means when said container reaches said level position; and means responsive to the opening of said closure means for causing said power means to resume the upward movement of said lift arms when said closure means is open.
Claim 6
Dependent Claim
340 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; power means for imparting vertical swinging movement to said lift arms; power means positioned for coaction with said fork arms and said lift arms to swing said fork arms vertically; means for actuating said power means to cause said lift arms to move upwardly from said lower position with said fork arms in said forwardly extending position and to arrest such upward movement when the lift arms reach a predetermined position between said upper and lower positions said actuating means being responsive to such arrest of said upward movement to cause said power means to move said fork arms to move said container to a substantially level position closure means movably mounted on said body for movement into and out of closing relation to said opening; closure operating means responsive to arrest of said upward movement to open said closure means when said container reaches said level position; and means responsive to the opening of said closure means for causing said power means to resume the upward movement of said lift arms when said closure means is open.
Claim 7
Dependent Claim
40 words
The front-end loader mechanism as claimed in claim 4 including means positioned for coaction with said latching means and said power means for opening said closure means to release said latching means prior to opening movement of said closure means.
Claim 8
Dependent Claim
207 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; and means movably mounted on the vehicle for movement into and out of a position for coaction with said lift arms to hold the lift arms in a position to support said container in an upright poSition at an elevation for movement with the vehicle.
Claim 9
Dependent Claim
207 words
In a front-end loader mechanism the combination with a motor vehicle of the type having a body with a refuse receiving opening in the top, of: a pair of lift arms pivotally mounted on the vehicle for vertical swinging movement between a lower position in which the free ends of the lift arms extend to the front end of the vehicle and an upper position in which said free ends extend above the top of the body; a pair of fork arms pivotally mounted on the lift arms for vertical swinging movement from a position extending forwardly from the free ends of the lift arms for engagement with a separable container in an upright position to connect the container to the lift arms to be lifted thereby upon upward movement of the lift arms to a position extending rearwardly from said free ends when the lift arms are in said upper position to dump the container into the body through said opening; and means movably mounted on the vehicle for movement into and out of a position for coaction with said lift arms to hold the lift arms in a position to support said container in an upright poSition at an elevation for movement with the vehicle.
Claim 10
Dependent Claim
24 words
The front-end loader mechanism as defined in claim 1 wherein said means for actuating said power means includes electrical means for controlling such actuation.
Claim 11
Dependent Claim
43 words
The front-end loader mechanism as defined in claim 7 wherein said electrical means includes: switch means positioned on said vehicle; and means positioned for coaction with said lift arms to actuate said switch means in response to upward movement of said lift arms.
Claim 12
Dependent Claim
48 words
The front-end loader mechanism as defined in claim 8 including: switch means on said lift arms; and means positioned for coaction with said fork arms to actuate said switch means on said lift arms in response to movement of said fork arms away from said forwardly extending position.
References Cited (Backward Citations)
US2824655A
Cited
US3090512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |