US3675801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conveying, handling, loading, and unloading of palletized materials
Assignee: Individual
•
Filing: 1970-04-22
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Granted: 1972-07-11
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Expires: 1990-04-22
Abstract
Abstract A flexible method and apparatus facilitating the stacking, storing, loading, unloading, selection, and separation of elongated bar and other similar materials, in which an elongated roller conveyor is sectionalized to provide a main material loading and unloading section in association with a supply feeder section at one end and an exit discharge section at its other end, a pallet pan being provided for the elongated material which can either be conveyed to the main section by means of a crane, fork-life truck or other means, or delivered directly from the feed section of the conveyor. The apparatus also permits an empty unloaded pallet pan to be placed at the main section, and the material independently moved from a supply point into the pan by hoist means or from the conveyor feed station. Powered rollers are operable to selectively shift the loaded pallet pan in opposite directions at the main section, and controllable means provided for vertically adjusting the level of the loaded pallet pan to a normal position in which it may be bodily shifted endwise together with the material therein, or to a lowered position in which the pan will be retained against movement and driving rollers projecting through the pan bottom operated for moving the material endwise independently of the pan. Electrical controls are provided for obtaining the variously required operations and coordinating the loading and unloading movements of the pallet pan and material. Adjustable selectable stop means are provided for terminating the movement of material entering the pallet pan from the feed section of the conveyor.
Inventors
- 👤 Carl B Larson
- 👤 William T Gimbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/11; B65G13/12; B65G47/00; B65G47/74; B65G47/88; B65G47/8807; B65G47/8815; B65G2207/00; B65G2207/46
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
Material handling equipment, comprising: a. an elongate conveyor including a plurality of longitudinally spaced transversely extending rollers, said conveyor having a main loading and unloading section; b. a material handling elongate pallet pan adapted to be moved to a position on said conveyor main section, said pan having an open top and ends defined by an axially extending wall structure including a bottom wall for supporting the pan on the rollers at said main station; and c. means operable to relatively position the pallet pan and rollers at said main section so that portions of certain of said main section rollers will project above the plane of said bottom wall.
Claim 2
Dependent Claim
110 words
Material handling equipment, comprising: a. an elongate conveyor including a plurality of longitudinally spaced transversely extending rollers, said conveyor having a main loading and unloading section; b. a material handling elongate pallet pan adapted to be moved to a position on said conveyor main section, said pan having an open top and ends defined by an axially extending wall structure including a bottom wall for supporting the pan on the rollers at said main station; and c. means operable to relatively position the pallet pan and rollers at said main section so that portions of certain of said main section rollers will project above the plane of said bottom wall.
Claim 3
Dependent Claim
29 words
Material handling equipment according to claim 1, wherein said pan bottom wall is provided with transversely extending spaced apart openings to respectively receive the projecting portions of said rollers.
Claim 4
Dependent Claim
39 words
Material handling equipment according to claim 2, wherein the spacings between said wall openings and the spacings between the rollers receivable therein are correspondingly positioned to provide a predetermined keyed position for the pallet pan at the main section.
Claim 5
Dependent Claim
23 words
Material handling equipment according to claim 2, wherein said means includes selectively operable fluid power actuated means for raising and lowering said pan.
Claim 6
Dependent Claim
61 words
Material handling equipment according to claim 1, wherein the projecting portions of said rollers hold said pan against axial movement, and including stop means adjacent one end of the main loading and unloading section, said stop means being operable to interrupt material movement by said projecting rollers on said conveyor at a predetermined desired position in relation to said main section.
Claim 7
Dependent Claim
43 words
Material handling equipment according to claim 5, wherein said stop means includes spaced apart plate members respectively mounted for movements into and out of a stop position in the conveying movement path; and selectively operable fluid power actuated means for moving said plates.
Claim 8
Dependent Claim
55 words
Material handling equipment according to claim 5, including power means energizable to rotatably drive said certain of said main section rollers to move material towards said stop means; and control means operable in response to movement of said material for interrupting the energization of said power means prior to the material reaching the stop means.
Claim 9
Dependent Claim
47 words
Material handling equipment according to claim 7, wherein the power means includes an electric motor having an energizing circuit, and the control means comprises a normally closed limit switch in an energizing circuit of said motor, said switch being operable to an open position by said material.
Claim 10
Dependent Claim
33 words
Material handling equipment according to claim 7, including means for actuating said stop means to a non-stop position after a time delay interval following the interruption of the energization of said power means.
Claim 11
Dependent Claim
156 words
Material handling equipment, comprising: a. an elongate conveyor having a main loading and unloading section and a plurality of spaced transversely extending rollers, the rollers in said main section comprising a plurality of relatively long and short rollers; B. a material handling elongate pallet pan adapted to be moved to a position on said conveyor main section, said pan having an open top and ends defined by an axially extending wall structure including a bottom wall having transversely extending spaced apart openings; c. said long rollers being supportingly engageable with said pan bottom wall, and the short rollers being of a size to project into said openings above the plane of said bottom wall; and d. means operable to relatively position the pallet pan and rollers at said main section including elements operable to lower the long rollers and supported pallet pan below the level of the short rollers and return the same to such level.
Claim 12
Dependent Claim
156 words
Material handling equipment, comprising: a. an elongate conveyor having a main loading and unloading section and a plurality of spaced transversely extending rollers, the rollers in said main section comprising a plurality of relatively long and short rollers; B. a material handling elongate pallet pan adapted to be moved to a position on said conveyor main section, said pan having an open top and ends defined by an axially extending wall structure including a bottom wall having transversely extending spaced apart openings; c. said long rollers being supportingly engageable with said pan bottom wall, and the short rollers being of a size to project into said openings above the plane of said bottom wall; and d. means operable to relatively position the pallet pan and rollers at said main section including elements operable to lower the long rollers and supported pallet pan below the level of the short rollers and return the same to such level.
Claim 13
Dependent Claim
65 words
Material handling equipment according to claim 10, including power means energizable to rotatably drive the long rollers and the short rollers, whereby with the long and short rollers at a corresponding level, said rollers are operable to move the pallet pan endwise on said conveyor, and with the long rollers lowered the short rollers are operable to relatively move material only in the pallet pan.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |