US3667618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for lifting and conveying materiel
Assignee: GENERAL CONVEYOR Inc
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Filing: 1969-08-19
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Granted: 1972-06-06
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Expires: 1989-08-19
Abstract
Abstract An overhead travelling crane movable along a path of travel, and also from side to side along the path has fixed to it a depending boom or mast which carries a movable section which can be raised and lowered to pick up materiel from either side of the path by means of a fork-like device near the bottom of the movable section. In the usual arrangement there are two such masts provided with lifting forks spaced apart from each other along the path, such that the forks can lift the two ends of cylindrical or pipe-like objects having cylindrical or tubular end members which can be grasped by the two spaced forks. Objects thus lifted by the forks can be carried along the path to some other location. A guide means equipped with wheels and rollers provides ease of movement of the movable mast sections up and down the fixed mast section without binding even under eccentric loading.
Inventors
- 👤 Peter H Bertola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0442; B66; B66F; B66F9/00; B66F9/06; B66F9/07; B65G2201/00; B65G2201/02; B65G2201/0232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
348 words
A mechanism for lifting and conveying objects comprising means defining a first overhead path of travel, a movable support frame having means thereon defining a second overhead path of travel disposed transversely relative to said first path of travel, means for moving said support frame along said first overhead path of travel, means mounted on said support frame for moving a mast along said second overhead path of travel, a mast having a pair of spaced first sections fixed to said last named means and depending downwardly therefrom and a second pair of spaced sections mounted on and movable up and down relative to said first sections, load handling means attached to and extending laterally from opposite sides of each of said second sections, said load handling means having recessed portions adjacent each end thereof operative to handle cylindrical objects, means for raising and lowering said second sections independently of each other and relative to said first sections, each of said first section of said mast comprising a tubular member with two horizontally spaced U-shaped channel members attached to one side of the tubular member, the openings of said U-shaped channel members being disposed in a facing relationship to each other and thereby defining a vertical guide channel for said second mast sections, eacH of said second mast sections comprising a tubular member with vertically spaced guide wheel means mounted thereon, said wheel means being rotatable on a horizontal axis so that the circumference of said wheel means enters between the sides of the U-shaped channel members and engages the base of each of said U-shaped channel members of said first sections, vertically spaced pairs of rollers mounted on each of said second sections and rotatable about a horizontal axis perpendicularly to the axis of said wheel means so that one of the rollers of each of said pairs of rollers engages a respective adjacent side of the two sides the U-shaped channel members of said first mast section whereby the second sections and load handling means thereon can be moved vertically to facilitate a load handling operation.
Claim 2
Dependent Claim
348 words
A mechanism for lifting and conveying objects comprising means defining a first overhead path of travel, a movable support frame having means thereon defining a second overhead path of travel disposed transversely relative to said first path of travel, means for moving said support frame along said first overhead path of travel, means mounted on said support frame for moving a mast along said second overhead path of travel, a mast having a pair of spaced first sections fixed to said last named means and depending downwardly therefrom and a second pair of spaced sections mounted on and movable up and down relative to said first sections, load handling means attached to and extending laterally from opposite sides of each of said second sections, said load handling means having recessed portions adjacent each end thereof operative to handle cylindrical objects, means for raising and lowering said second sections independently of each other and relative to said first sections, each of said first section of said mast comprising a tubular member with two horizontally spaced U-shaped channel members attached to one side of the tubular member, the openings of said U-shaped channel members being disposed in a facing relationship to each other and thereby defining a vertical guide channel for said second mast sections, eacH of said second mast sections comprising a tubular member with vertically spaced guide wheel means mounted thereon, said wheel means being rotatable on a horizontal axis so that the circumference of said wheel means enters between the sides of the U-shaped channel members and engages the base of each of said U-shaped channel members of said first sections, vertically spaced pairs of rollers mounted on each of said second sections and rotatable about a horizontal axis perpendicularly to the axis of said wheel means so that one of the rollers of each of said pairs of rollers engages a respective adjacent side of the two sides the U-shaped channel members of said first mast section whereby the second sections and load handling means thereon can be moved vertically to facilitate a load handling operation.
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |