Patent US3575274A successfully refreshed from Google Patents.
US3575274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor frame supported inspection and service vehicle
Assignee: Hewitt Robins Inc
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Filing: 1968-10-30
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Granted: 1971-04-20
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Expires: 1988-10-30
Abstract
Abstract A self-propelled vehicle is provided which rides on the side beams of long length conveyors. A first lifting mechanism is provided in the vehicle which removes the protective cover from the conveyor. A second lifting mechanism is provided having a lifting head that permits the elevated conveyor belt to continue operation while the defective idler roll is repaired or replaced.
Inventors
- 👤 Sylvester E Ewing
- 👤 Jacob Hubee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:56
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/08; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A vehicle for use in combination with a conveyor, said conveyor comprising spaced-apart side support rails and conveying means mounted thereon, said vehicle mounted for travel on said side support rails, said vehicle having an inspection section comprising spaced-apart side frame members which are substantially parallel to each other and which are coupled together by spaced-apart portal members, rail support means mounted at each end of said side frame members for supporting said inspection section on said side support rails, and cabin means formed on said side frame members which enable persons in said cabin means to inspect said conveying means when said inspection section is supported on said side support rails.
Claim 2
Dependent Claim
112 words
A vehicle for use in combination with a conveyor, said conveyor comprising spaced-apart side support rails and conveying means mounted thereon, said vehicle mounted for travel on said side support rails, said vehicle having an inspection section comprising spaced-apart side frame members which are substantially parallel to each other and which are coupled together by spaced-apart portal members, rail support means mounted at each end of said side frame members for supporting said inspection section on said side support rails, and cabin means formed on said side frame members which enable persons in said cabin means to inspect said conveying means when said inspection section is supported on said side support rails.
Claim 3
Dependent Claim
44 words
A vehicle as described in claim 1 wherein each of said rail support means comprises a powered drive truck pivotally coupled to one of said side frame members, said powered drive trucks adapted to propel said inspection section along the length of said conveyor.
Claim 4
Dependent Claim
74 words
A vehicle as defined in claim 1 wherein said conveying means further comprises spaced troughing idlers mounted between said side support rails, a conveyor belt having a conveying section thereof supported by said troughing idlers and wherein said vehicle is further characterized by a service section having a belt lifting means mounted thereon which is adapted to lift the conveying section of said conveyor belt off of at least one of said troughing idlers.
Claim 5
Dependent Claim
80 words
A vehicle as described in claim 3 wherein said belt lifting means comprises a belt lifting mechanism mounted on each of said side frame members, each of said belt lifting mechanisms comprising powered elevating means coupled to one of said side frame members, idler head means coupled to said powered elevating means and being movable between an operative and an inoperative position, said powered elevating means adapted to move said idler head means between an extended and a retracted position.
Claim 6
Dependent Claim
113 words
A vehicle as described in claim 4 wherein each of said idler head means comprises a rotatably mounted horizontal roll and a rotatably mounted inclined roll, said rolls on each of said idler head means being positioned so that when both of said idler head means are moved into an operative position, they combine to form a trough belt support means which is similar to the troughing idlers of the conveyor and which permits the conveyor belt to be lifted off of one conveyor troughing idler when said trough belt support means is positioned under the conveyor belt and when said powered elevating means have moved said idler means into an extended position.
Claim 7
Dependent Claim
44 words
A vehicle as defined in claim 1 wherein said conveyor further comprises removable hood covers spanning said side support rails and said conveying means, said vehicle being further characterized by cover lifting means coupled to said inspection section for removal of said hood covers.
Claim 8
Dependent Claim
70 words
A vehicle as defined in claim 6 wherein said cover lifting means comprises powered actuating means mounted in each of said cabin structures, electromagnetic means for releasably holding said hood covers, said electromagnetic means coupled to said powered actuating means, said powered actuating meaNs moving said electromagnetic means between an extended and a retracted position, said electromagnetic means contoured so as to provide substantial surface-to-surface contact with said hood covers.
Claim 9
Dependent Claim
100 words
A vehicle for use in combination with a conveyor, said conveyor comprising spaced-apart side support rails, spaced troughing idlers mounted between said support rails, a conveyor belt having a conveying section thereof supported by said troughing idlers, said vehicle comprising a service section having a frame designed so as to straddle said conveyor, wheel means mounted on said frame for movably supporting said service section on said side support rails, a belt lifting means coupled to said frame of said service section for lifting the conveying section of said conveyor belt off of at least one of said troughing idlers.
Claim 10
Dependent Claim
100 words
A vehicle for use in combination with a conveyor, said conveyor comprising spaced-apart side support rails, spaced troughing idlers mounted between said support rails, a conveyor belt having a conveying section thereof supported by said troughing idlers, said vehicle comprising a service section having a frame designed so as to straddle said conveyor, wheel means mounted on said frame for movably supporting said service section on said side support rails, a belt lifting means coupled to said frame of said service section for lifting the conveying section of said conveyor belt off of at least one of said troughing idlers.
Claim 11
Dependent Claim
104 words
A vehicle as described in claim 8 wherein each of said idler head means comprises a rotatably mounted horizontal roll and a rotatably mounted inclined roll, said rolls on each of said idler head means being positioned so that when both of said idler head means are moved into an operative position, they combine to form a trough belt support means which permits the conveyor belt to be lifted off of one of said troughing idlers when said trough belt support means is positioned under the conveyor belt and when said powered elevating means have moved said idler head means into an extended position.
Claim 12
Dependent Claim
26 words
A vehicle as described in claim 9 which is further characterized by latch means on said head means for locking said head means in operative position.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |