US4008890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transporting materials
Assignee: Vanguard Machinery Corp
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Filing: 1975-06-05
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Granted: 1977-02-22
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Expires: 1995-06-05
Abstract
Abstract Method and apparatus employing serially positioned conveyors which are reorientable relative to one another in order to position an incoming stack of materials for transport and automatic stacking at an output position. Two of the conveyors are tiltable to upset the stack and provide initial shingling. Further shingling is achieved using an inclinable shingling conveyor in conjunction with a stripper unit.
Inventors
- 👤 William F. Pulda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:17
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/30; B65H15/00; B65H15/016; B65H15/02; B65H5/00; B65H5/24; B65H2301/00; B65H2301/30; B65H2301/33; B65H2301/332; B65H2301/3321; B65H2301/33214; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4213; B65H2301/42134
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
88 words
The method of transporting and reorienting a stack of materials which comprises the steps of: a. conveying the stack to a prescribed position on and by one driven feed conveyor; b. pivoting another driven feed conveyor to a prescribed angular position relative to the one conveyor; c. tilting said stack and letting it fall freely against the other conveyor to simultaneously upset and shingle said stack; d. positioning said other conveyor for the feed of the upset stack therefrom; e. substantially uniformly increasing the shingle of said stack.
Claim 2
Independent Claim
88 words
The method of transporting and reorienting a stack of materials which comprises the steps of: a. conveying the stack to a prescribed position on and by one driven feed conveyor; b. pivoting another driven feed conveyor to a prescribed angular position relative to the one conveyor; c. tilting said stack and letting it fall freely against the other conveyor to simultaneously upset and shingle said stack; d. positioning said other conveyor for the feed of the upset stack therefrom; e. substantially uniformly increasing the shingle of said stack.
Claim 3
Dependent Claim
44 words
The method of claim 1 wherein a. said stack is conveyed to said prescribed position over said other conveyor to said one conveyor and said other conveyor is thereafter elevated; and b. said stack is upset and simultaneously shingled by elevating said one conveyor.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein said other conveyor is elevated in the range from 40° to 80°.
Claim 5
Dependent Claim
37 words
The method of claim 1 wherein the surface of the belting of said other conveyor in contact with said stack is smoother than the surface of the belting of said one conveyor in contact with said stack.
Claim 6
Dependent Claim
38 words
The method of claim 1 wherein the step of uniformly increasing the shingle of said stack is performed by a stripper unit overlying a path along which the stack is fed from the position where it is upset.
Claim 7
Dependent Claim
17 words
The method of claim 5 wherein said stripper unit is removable from its position overlying said path.
Claim 8
Dependent Claim
24 words
The method of claim 5 wherein said stripper unit includes at least one pivotable finger that extends downwardly to the path of said stack.
Claim 9
Dependent Claim
18 words
The method of claim 7 wherein said finger is spaced from said path by at least one-quarter inch.
Claim 10
Dependent Claim
34 words
The method of claim 5 wherein said stripper unit operates a limit switch when a predetermined force is applied to said stripper unit by said stack, to terminate the feed of the upset stack.
Claim 11
Dependent Claim
22 words
The method of claim 5 wherein said stripper unit is mounted on a third conveyor at the output of said other conveyor.
Claim 12
Dependent Claim
50 words
The method of claim 1 wherein a. said stack is conveyed over and on said one conveyor to said prescribed position, said prescribed position being on said one conveyor, and said other conveyor is thereafter elevated; and b. said stack is upset and simultaneously shingled by elevating said one conveyor.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |