US3715043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading and unloading conveyor
Assignee: FMC Corp
•
Filing: 1971-05-28
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Granted: 1973-02-06
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Expires: 1991-05-28
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
- 👤 S Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
B; B65; B65G; B65G67/00; B65G67/02; B65G67/04; B65G67/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A load-unload arm for loading and unloading a vehicle comprising a conveyor pivotal about one end, a ramp pivotally connected to the opposite end of the conveyor, said ramp being wedge-shaped and having mobile fingers to advance a load thereon, power means to effect lateral and longitudinal movement between the conveyor and the vehicle, power means to pivot the conveyor about said one end, power means to swing the ramp about said opposite end of the conveyor, and power means to move said ramp fingers.
Claim 2
Dependent Claim
85 words
A load-unload arm for loading and unloading a vehicle comprising a conveyor pivotal about one end, a ramp pivotally connected to the opposite end of the conveyor, said ramp being wedge-shaped and having mobile fingers to advance a load thereon, power means to effect lateral and longitudinal movement between the conveyor and the vehicle, power means to pivot the conveyor about said one end, power means to swing the ramp about said opposite end of the conveyor, and power means to move said ramp fingers.
Claim 3
Dependent Claim
85 words
A load-unload arm for loading and unloading a vehicle comprising a conveyor pivotal about one end, a ramp pivotally connected to the opposite end of the conveyor, said ramp being wedge-shaped and having mobile fingers to advance a load thereon, power means to effect lateral and longitudinal movement between the conveyor and the vehicle, power means to pivot the conveyor about said one end, power means to swing the ramp about said opposite end of the conveyor, and power means to move said ramp fingers.
Claim 4
Dependent Claim
85 words
A load-unload arm for loading and unloading a vehicle comprising a conveyor pivotal about one end, a ramp pivotally connected to the opposite end of the conveyor, said ramp being wedge-shaped and having mobile fingers to advance a load thereon, power means to effect lateral and longitudinal movement between the conveyor and the vehicle, power means to pivot the conveyor about said one end, power means to swing the ramp about said opposite end of the conveyor, and power means to move said ramp fingers.
Claim 5
Dependent Claim
27 words
The apparatus of claim 1 including mechanism to control the operation of at least some of said power means, said control mechanism remote from the units controlled.
Claim 6
Dependent Claim
21 words
The apparatus of claim 2 wherein said control mechanism is assembled on a single unit for simultaneous access by an operator.
Claim 7
Dependent Claim
15 words
The apparatus of claim 3 in which said single unit is portable by the operator.
Claim 8
Dependent Claim
80 words
Mechanism for loading and unloading a vehicle comprising an elongated conveyor, a ramp mounted on the end of said conveyor, said ramp being wedge-shaped and having mobile fingers to move a load thereon, power means to effect relative movement between the ramp end of the conveyor and the vehicle, and control mechanism to control the movement between the ramp end of the conveyor and the vehicle, said control mechanism remote from said power means for convenient access by an operator.
Claim 9
Dependent Claim
80 words
Mechanism for loading and unloading a vehicle comprising an elongated conveyor, a ramp mounted on the end of said conveyor, said ramp being wedge-shaped and having mobile fingers to move a load thereon, power means to effect relative movement between the ramp end of the conveyor and the vehicle, and control mechanism to control the movement between the ramp end of the conveyor and the vehicle, said control mechanism remote from said power means for convenient access by an operator.
Claim 10
Dependent Claim
15 words
The mechanism of claim 5 in which said elongated conveyor is pivotal about one end.
Claim 11
Dependent Claim
18 words
The mechanism of claim 5 in which said ramp is pivotal about said one end of the conveyor.
Claim 12
Dependent Claim
102 words
Apparatus for loading and unloading a freight container comprising an elongated conveyor, means on said elongated conveyor to move articles thereon in one direction or the other, a wedge-shaped ramp conveyor pivotally connected at one end to one end of said elongated conveyor, said ramp conveyor terminating in a point at the opposite end, means on said wedge-shaped ramp conveyor for moving articles thereon in one direction or the other, means to pivot said ramp conveyor with respect to said elongated conveyor, and means to effect relative longitudinal movement between the pointed end of said wedge-shaped ramp conveyor and the freight container.
Claim 13
Dependent Claim
102 words
Apparatus for loading and unloading a freight container comprising an elongated conveyor, means on said elongated conveyor to move articles thereon in one direction or the other, a wedge-shaped ramp conveyor pivotally connected at one end to one end of said elongated conveyor, said ramp conveyor terminating in a point at the opposite end, means on said wedge-shaped ramp conveyor for moving articles thereon in one direction or the other, means to pivot said ramp conveyor with respect to said elongated conveyor, and means to effect relative longitudinal movement between the pointed end of said wedge-shaped ramp conveyor and the freight container.
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |