Patent US3933257A successfully refreshed from Google Patents.
US3933257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warehouse shelving system
Assignee: Individual
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Filing: 1974-07-18
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Granted: 1976-01-20
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Expires: 1994-07-18
Abstract
Abstract Several stacks of shelves in a warehouse, separated by aisles, are vertically subdivided into a multiplicity of tiers each with a depth of four storage spaces accommodating respective pallet-size loads. At the level of certain tiers of each stack the two inner storage spaces are converted into throughgoing passageways for the manual assembly of fractional orders, these passageways extending parallel to the aisles bounding the respective stack. A stacker crane in each aisle comprises a platform accommodating two pallets in a direction perpendicular to the passageways, the platform supporting a telescoping arm bracketed by a pair of longitudinally extending ledges forming part of an underlying lifting frame; the ledges carry respective transfer blocks allowing for the longitudinal displacement of a pallet from one extremity of the telescoping arm to the other upon an elevation of the lifting frame to raise the pallet off that arm. A pallet can thus be repositioned on the platform during operation of the lifting crane, with extension of the arm into a storage space next to a passageway occurring after the platform has been aligned with the corresponding tier.
Inventors
- 👤 Reinold Karl Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:04
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0485; B27; B27N; B27N3/00; B27N3/08; B27N3/20; B27N3/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
273 words
A shelving system for the storage of pallet-size loads, comprising: a plurality of stacks of shelves each vertically subdivided into a multiplicity of tiers positioned on the same levels in said plurality of stacks, longitudinally adjoining stacks being separated by a transversely extending aisle, each stack having a depth of several storage spaces each accommodating a pallet-size load, said aisle having a depth substantially equaling at least twice the depth of a storage space; hoisting means in said aisle including a pallet carrier alignable with the tiers of the adjoining stack on any level, said carrier comprising a platform, a longitudinally extendable arm on said platform substantially spanning the depth of said aisle when in a contracted position, lifting means alongside said arm on said platform, and transfer means mounted on said lifting means and longitudinally displaceable thereon between opposite extremities of said arm, the length of said transfer means being less than the length of said arm in said contracted position thereof; and mechanism on said carrier for placing said transfer means under a pallet riding on one extremity of the contracted arm, actuating said lifting means to engage said transfer means with the pallet and raise the latter off said arm, displacing said transfer means on said lifting means into an alternate position relative to said arm, depositing the pallet on the other extremity of said arm with disengagement of said transfer means therefrom, and extending said arm into the adjoining stack on the side of said other extremity, said stacks being provided at certain levels with throughgoing transverse passageways adjoining a single row of storage spaces next to said aixle.
Claim 2
Dependent Claim
273 words
A shelving system for the storage of pallet-size loads, comprising: a plurality of stacks of shelves each vertically subdivided into a multiplicity of tiers positioned on the same levels in said plurality of stacks, longitudinally adjoining stacks being separated by a transversely extending aisle, each stack having a depth of several storage spaces each accommodating a pallet-size load, said aisle having a depth substantially equaling at least twice the depth of a storage space; hoisting means in said aisle including a pallet carrier alignable with the tiers of the adjoining stack on any level, said carrier comprising a platform, a longitudinally extendable arm on said platform substantially spanning the depth of said aisle when in a contracted position, lifting means alongside said arm on said platform, and transfer means mounted on said lifting means and longitudinally displaceable thereon between opposite extremities of said arm, the length of said transfer means being less than the length of said arm in said contracted position thereof; and mechanism on said carrier for placing said transfer means under a pallet riding on one extremity of the contracted arm, actuating said lifting means to engage said transfer means with the pallet and raise the latter off said arm, displacing said transfer means on said lifting means into an alternate position relative to said arm, depositing the pallet on the other extremity of said arm with disengagement of said transfer means therefrom, and extending said arm into the adjoining stack on the side of said other extremity, said stacks being provided at certain levels with throughgoing transverse passageways adjoining a single row of storage spaces next to said aixle.
Claim 3
Dependent Claim
21 words
A shelving system as defined in claim 1 wherein superimposed passageways at different levels have ends interconnected by a vertical shaft.
Claim 4
Dependent Claim
36 words
A shelving system as defined in claim 1 wherein the depth of said aisle slightly exceeds the depth of two storage spaces, the length of said transfer means substantially equaling half the length of said arm.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |