US3866768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading and unloading conveyor
Assignee: FMC Corp
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Filing: 1972-08-01
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Granted: 1975-02-18
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Expires: 1992-08-01
Abstract
Abstract A loading-unloading conveyor boom is vertically adjustable with a ramp pivotally attached at one end that can be independently tilted up or down. The ramp has a set of movable wedge-shaped finger members for moving freight from its wedge-shaped finger tips to the conveyor boom or vice-versa. All motions of the loading-unloading conveyor boom are controlled by an operator working in the vicinity of the ramp. The loading-unloading boom is of fixed length, and is pivoted by a motorized cart that also moves an air-bearing supported platform on which a freight carrier or container rests, backward or forward and sideways left or right.
Inventors
- 👤 Stanley M Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:41
CPC Classifications
B; B65; B65G; B65G67/00; B65G67/02; B65G67/04; B65G67/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
181 words
Apparatus for loading or unloading articles into or from a freight container comprising in combination, an elongated conveyor, means on said elongated conveyor for moving articles received thereon from one end thereof to the other, a ramp conveyor pivotally connected at one end to one end of said elongated conveyor and terminating at its opposite eNd in a wedge-like edge insertable under articles in the freight container, means on said ramp conveyor to move articles incrementally thereon from one end thereof to the other, said means including interdigitating stationary and movable fingers, said stationary fingers having a substantially planar lower surface, power operated means to raise and lower said one end of the elongated conveyor to bring the ramp conveyor to the approximate level of the floor of the freight container, and power operated means to pivot said ramp conveyor on the elongated conveyor to bring said ramp conveyor finger lower surface adjacent the level of the floor of the freight container to dispose said wedge-like edge for scooping articles from the container floor or depositing articles on the container floor.
Claim 2
Dependent Claim
181 words
Apparatus for loading or unloading articles into or from a freight container comprising in combination, an elongated conveyor, means on said elongated conveyor for moving articles received thereon from one end thereof to the other, a ramp conveyor pivotally connected at one end to one end of said elongated conveyor and terminating at its opposite eNd in a wedge-like edge insertable under articles in the freight container, means on said ramp conveyor to move articles incrementally thereon from one end thereof to the other, said means including interdigitating stationary and movable fingers, said stationary fingers having a substantially planar lower surface, power operated means to raise and lower said one end of the elongated conveyor to bring the ramp conveyor to the approximate level of the floor of the freight container, and power operated means to pivot said ramp conveyor on the elongated conveyor to bring said ramp conveyor finger lower surface adjacent the level of the floor of the freight container to dispose said wedge-like edge for scooping articles from the container floor or depositing articles on the container floor.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 including control means spaced from said conveyors for operation of both of said power operated means.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |