US3581874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable stacking devices for conveyors
Assignee: Individual
•
Filing: 1969-05-26
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Granted: 1971-06-01
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Expires: 1989-05-26
Abstract
Abstract A portable, relatively short, self-powered, reversible, belt conveyor arranged for attachment to a main conveyor to receive articles from or convey articles to the main conveyor. Said selfpowered conveyor being pivotally mounted so as to be horizontally and vertically adjustable to conveniently stack the received articles for storage.
Inventors
- 👤 Milroy A Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:01
CPC Classifications
B; B65; B65G; B65G67/00; B65G67/02; B65G67/04; B65G67/08; B65G41/00; B65G41/001; B65G41/002
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A portable stacking device for receiving and positioning loads delivered by a conveyor comprising: a. a base frame adapted to be horizontally and portably supported upon a floor; b. a base bearing medially secured upon and projecting upwardly from said base frame; c. a horizontal, annular, brace ring rigidly supported from said base frame in vertically spaced concentric relation with said base bearing; d. a vertical yoke shaft journaled in said base bearing at its lower extremity and arising axially and rotatably through said brace ring and laterally supported by said ring; e. a conveyor-supporting yoke, fixedly mounted on the upper extremity of said yoke shaft and supporting a conveyor assembly thereon; f. a horizontal, circular locking plate, provided with circumferentially spaced notches, concentrically secured to said yoke shaft between said base bearing and said brace ring; and g. a notch-engaging locking pawl horizontally mounted on said base frame in the plane of said locking plate adapted to selectively engage the spaced notches of the latter to lock said vertical yoke shaft at desired circumferential positions.
Claim 2
Dependent Claim
176 words
A portable stacking device for receiving and positioning loads delivered by a conveyor comprising: a. a base frame adapted to be horizontally and portably supported upon a floor; b. a base bearing medially secured upon and projecting upwardly from said base frame; c. a horizontal, annular, brace ring rigidly supported from said base frame in vertically spaced concentric relation with said base bearing; d. a vertical yoke shaft journaled in said base bearing at its lower extremity and arising axially and rotatably through said brace ring and laterally supported by said ring; e. a conveyor-supporting yoke, fixedly mounted on the upper extremity of said yoke shaft and supporting a conveyor assembly thereon; f. a horizontal, circular locking plate, provided with circumferentially spaced notches, concentrically secured to said yoke shaft between said base bearing and said brace ring; and g. a notch-engaging locking pawl horizontally mounted on said base frame in the plane of said locking plate adapted to selectively engage the spaced notches of the latter to lock said vertical yoke shaft at desired circumferential positions.
Claim 3
Dependent Claim
54 words
A portable stacking device as described in claim 1 having: a. inclined radially positioned brace members secured to said base frame at their outer extremities and extending axially inward and upward to a fixed connection with said brace ring at their axial extremities to brace and support said brace ring above said locking plate.
Claim 4
Dependent Claim
44 words
A portable stacking device as described in claim 2 having: a. an annular series of spaced rollers pivoted on said brace ring about and in circumferential contact with the yoke shaft to resist lateral tilting of the latter shaft in the stationary brace ring.
Claim 5
Dependent Claim
58 words
A portable stacking device as described in claim 1 having: a. a hydraulically expansible brace hingedly mounted at its lower extremity on said locking plate and extending upwardly and outwardly to a hinged connection with said conveyor assembly so as to horizontally rotate as a unit with the locking plate and control vertical movements of said conveyor assembly.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |