US3815950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door assembly for a refuse receiving hopper
Assignee: LOAD-MASTER ACQUISITION Corp
•
Filing: 1973-06-18
•
Granted: 1974-06-11
•
Expires: 1993-06-18
Abstract
Abstract A door assembly for a refuse receiving hopper of a refuse vehicle, generally including a pair of arm assemblies pivotally mounted on the rear ends of the hopper side walls, a door panel secured to the arm assemblies, a pair of springs interconnecting the arm assemblies and the hopper side walls and means mounted on the hopper engageable by the arm assemblies for restricting the pivotal movement of the arm assemblies within an arc intersected by a plane passing through the connections of the spring members with the hopper side walls and the pivot axis of the arm assemblies whereby upon manipulation of the door panel in moving the arm assemblies above and below the arc intersecting plane, the springs will operate to bias the door panel in an open position disposed above the hopper opening and to a closed position disposed across the hopper opening, respectively.
Inventors
- 👤 R Stansberry
- 👤 R Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:52
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/001
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
298 words
A door assembly for a refuse rEceiving hopper of a refuse vehicle, having a pair of transversely spaced side walls and a rear wall provided with an opening through which refuse may be charged into said hopper, comprising a pair of arm assemblies mounted on rear ends of said hopper side walls, each of said arm assemblies including a hinge pin mounted on the rear end of one of said hopper side walls and being disposed in axial alignment with the hinge pin of the other of said arm assemblies, an outer arm member rigidly connected on an outer end of said hinge pin and projecting substantially radially relative to the axis thereof, and an inner arm member rigidly connected to an inner end of said hinge pin and projecting substantially radially therefrom, at least one spring connected at one end thereof to an outer side of one of said hopper side walls and connected at the opposite end thereof to the outer arm member of one of said arm assemblies, a door panel rigidly interconnecting the inner arm members of said arm assemblies and means mounted on said hopper engageable by said arm assemblies for restricting the pivotal movement of said inner arm members within an arc intersected by a line passing through the connection of said spring member with said hopper side wall and the axis of the hinge pin of the arm assembly to which the opposite end of said spring member is attached whereby upon manipulating said door panel in moving the outer arm members of said arm assemblies above and below said intersecting line, said spring will operate to bias said door panel in an open position disposed above said hopper opening and to a closed position disposed across said hopper opening, respectively.
Claim 2
Dependent Claim
298 words
A door assembly for a refuse rEceiving hopper of a refuse vehicle, having a pair of transversely spaced side walls and a rear wall provided with an opening through which refuse may be charged into said hopper, comprising a pair of arm assemblies mounted on rear ends of said hopper side walls, each of said arm assemblies including a hinge pin mounted on the rear end of one of said hopper side walls and being disposed in axial alignment with the hinge pin of the other of said arm assemblies, an outer arm member rigidly connected on an outer end of said hinge pin and projecting substantially radially relative to the axis thereof, and an inner arm member rigidly connected to an inner end of said hinge pin and projecting substantially radially therefrom, at least one spring connected at one end thereof to an outer side of one of said hopper side walls and connected at the opposite end thereof to the outer arm member of one of said arm assemblies, a door panel rigidly interconnecting the inner arm members of said arm assemblies and means mounted on said hopper engageable by said arm assemblies for restricting the pivotal movement of said inner arm members within an arc intersected by a line passing through the connection of said spring member with said hopper side wall and the axis of the hinge pin of the arm assembly to which the opposite end of said spring member is attached whereby upon manipulating said door panel in moving the outer arm members of said arm assemblies above and below said intersecting line, said spring will operate to bias said door panel in an open position disposed above said hopper opening and to a closed position disposed across said hopper opening, respectively.
Claim 3
Dependent Claim
26 words
A door assembly according to claim 1 wherein said door panel is provided with a handle for manipulating said door panel between open and closed positions.
Claim 4
Dependent Claim
89 words
A door assembly according to claim 1 including a second door panel hingedly connected along a transverse edge of said first mentioned door panel whereby when said first mentioned door panel is in its upper open position said second door panel will be disposed in a substantially folded relation with said first mentioned door panel and when said first mentioned door panel is in its lower closed position, said second door panel will be disposed in substantial alignment with said first mentioned door panel, disposed across said hopper opening.
Claim 5
Dependent Claim
28 words
A door assembly according to claim 3 wherein said second door panel is provided with a handle for manipulating said door panels between said open and closed positions.
Claim 6
Dependent Claim
31 words
A door assembly according to claim 1 wherein the inner arm members of said arm assemblies are pivotable in planes disposed substantially parallel to and inwardly of said hopper side walls.
Claim 7
Dependent Claim
31 words
A door assembly according to claim 1 wherein the outer arm members of said arm assemblies are pivotable in planes disposed substantially parallel and outwardly relative to said hopper side walls.
Claim 8
Dependent Claim
36 words
A door assembly according to claim 1 wherein the inner member of each of said arm assemblies includes at least a base portion thereof displaced angularly relative to the outer arm member of said arm assembly.
Claim 9
Dependent Claim
48 words
A door assembly according to claim 1 wherein the outer arm member of each of said arm assemblies includes a base arm portion displaced angularly relative to the outer arm member of said arm assembly and an elongated extension arm portion to which said door panel is secured.
Claim 10
Dependent Claim
26 words
A door assembly according to claim 8 wherein said elongated, extension arm portion is disposed substantially parallel to the outer arm member of said arm assembly.
Claim 11
Dependent Claim
29 words
A door assembly according to claim 1 wherein said means for restricting the pivotal movement of said arm assemblies comprise stop members engageable by portions of said arm assemblies.
Claim 12
Dependent Claim
32 words
A door assembly according to claim 1 wherein at least one of said arm assemblies includes means for actuating a sensing means when said door panel is in the lower closed position.
Claim 13
Dependent Claim
200 words
A door assembly according to claim 1 whErein the inner arm members of said arm assemblies are pivotable in planes disposed substantially parallel and inwardly relative to said hopper side walls, the outer arm members of said arm assemblies are pivotable in planes disposed substantialy parallel and outwardly relative to said hopper side walls, the inner arm member of each of said arm assemblies includes a base arm portion displaced angularly relative to the outer arm member thereof and an elongated extension arm member thereof to which said door panel is secured and said means for restricting the pivotal movement of said arm assemblies comprise stop members engageable by portions of said arm assemblies, and including a second door panel provided with a handle, hingedly connected along a transverse edge of said first mentioned door panel whereby when said first mentioned door panel is in its upper open position, said second door panel will be disposed in substantially folded relation with said first mentioned door panel and when said first mentioned door panel is in its lower closed position, said second door panel will be disposed in substantial alignment with said first mentioned door panel, disposed across said hopper opening.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |