US3727965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting tool for bound packages
Assignee: CRANSTON MACHINER CO Inc
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Filing: 1971-07-12
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Granted: 1973-04-17
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Expires: 1991-07-12
Abstract
Abstract A pair of hooking devices is mounted for telescopic extension and retraction in opposite ends of a tubular horizontal lifting beam. Each hooking device is equipped with a pair of opposed fingers adapted to engage under a binding extending across the top of the package. One of the fingers is a lifting finger and the opposite finger serves as a holding dog to retain the binding on the lifting finger when the two fingers are closed together. The two hooking devices initially engage the binding at points inward from the opposite sides of the package. Lifting chains connected with pivotal bell crank arms on the beam slide the hooking devices outward from opposite ends of the beam to approach the opposite sides of the package as it is lifted.
Inventors
- 👤 A Cranston
- 👤 C Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:54
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/28
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
149 words
Apparatus for lifting a package by its binding comprising a beam, a pair of hooking devices mounted on opposite ends of said beam to engage said binding and provide two-point support for said package, means to extend said hooking devices away from each other on said beam comprising pivotal lifting arms on said beam arranged to extend said hooking devices when said beam is lifted, and means to retract said hooking devices toward each other on said beam, each of said hooking devices comprising a pair of opposed fingers mounted for closing and opening lengthwise movements toward and away from each other, said fingers closing together in side by side relation with at least one of said fingers being arranged to pass under said binding and the other finger being arranged to retain said binding on said one finger, and a motor arranged to close and open said fingers.
Claim 2
Dependent Claim
149 words
Apparatus for lifting a package by its binding comprising a beam, a pair of hooking devices mounted on opposite ends of said beam to engage said binding and provide two-point support for said package, means to extend said hooking devices away from each other on said beam comprising pivotal lifting arms on said beam arranged to extend said hooking devices when said beam is lifted, and means to retract said hooking devices toward each other on said beam, each of said hooking devices comprising a pair of opposed fingers mounted for closing and opening lengthwise movements toward and away from each other, said fingers closing together in side by side relation with at least one of said fingers being arranged to pass under said binding and the other finger being arranged to retain said binding on said one finger, and a motor arranged to close and open said fingers.
Claim 3
Dependent Claim
31 words
A device as defined in claim 1, said one finger being longer than said other finger, said one finger being a lifting hook and said other finger being a holding dog.
Claim 4
Dependent Claim
27 words
A device as defined in claim 2, said fingers being mounted on opposite ends of a pair of slide bars having horizontal side by side sliding movement.
Claim 5
Dependent Claim
38 words
A device as defined in claim 3 including a pivotal stripper dog on the slide bar carrying said dog finger arranged to strip said binding from said lifting hook finger when said fingers move away from each other.
Claim 6
Dependent Claim
38 words
A device as defined in claim 3 including a pinion gear between said slide bars, and rack teeth on said slide bars engaging opposite sides of said pinion gear for movement of the slide bars in opposite directions.
Claim 7
Dependent Claim
29 words
A device as defined in claim 5, said motor comprising a fluid pressure cylinder and piston connected with one of said slide bars for opening and closing said fingers.
Claim 8
Dependent Claim
23 words
A device as defined in claim 5, said motor comprising a rotary motor driving said pinion gear for opening and closing said fingers.
Claim 9
Dependent Claim
139 words
Apparatus for lifting a package by its binding comprising a pair of hooking devices arranged to engage said binding at two points on top of the package spaced inward from opposite sides of the package, means for retaining said binding in said engagement with said hooking devices, means for sliding said hooking devices away from each other along said binding toward said opposite sides of the package, means for lifting said hooking devices whereby the package is lifted, said sliding means being incorporated in said lifting means and operable by said lifting means when said hooking devices are lifted, means for retracting said hooking devices toward each other and away from said opposite sides of the package when the package is rested on its bottom, and means for opening said retaining means to release said apparatus from the package.
Claim 10
Dependent Claim
139 words
Apparatus for lifting a package by its binding comprising a pair of hooking devices arranged to engage said binding at two points on top of the package spaced inward from opposite sides of the package, means for retaining said binding in said engagement with said hooking devices, means for sliding said hooking devices away from each other along said binding toward said opposite sides of the package, means for lifting said hooking devices whereby the package is lifted, said sliding means being incorporated in said lifting means and operable by said lifting means when said hooking devices are lifted, means for retracting said hooking devices toward each other and away from said opposite sides of the package when the package is rested on its bottom, and means for opening said retaining means to release said apparatus from the package.
Claim 11
Dependent Claim
61 words
Apparatus as defined in claim 8, each of said hooking devices comprising a pair of opposed fingers mounted for closing and opening lengthwise movements toward and away from each other, and fingers in closed position overlapping each other in side by side relation, said retaining means comprising one of said fingers, and a motor arranged to close and open said fingers.
Claim 12
Dependent Claim
17 words
Apparatus as defined in claim 8 including a beam supporting said hooking devices for sliding movement therealong.
Claim 13
Dependent Claim
24 words
Apparatus as defined in claim 10, said sliding means and lifting means including pivotal lifting arms on said beam operable on said hooking devices.
Claim 14
Dependent Claim
31 words
Apparatus as defined in claim 11, said beam being tubuLar and said hooking devices being mounted on the outer ends of elongated telescopic members slidable in opposite ends of said beam.
Claim 15
Dependent Claim
32 words
Apparatus as defined in claim 12, said hooking devices being rotatable relative to each other on the axis of said beam for adjustment to surface irregularities on the top of the package.
Claim 16
Dependent Claim
57 words
Apparatus as defined in claim 12 including pivotal connections for said lifting arms on said beam, longitudinal slots in said beam, ears on said telescopic members slidable in said slots, pivotal connections between said ears and one end of said lifting arms, and lifting chains for said apparatus connected to the opposite ends of said lifting arms.
Claim 17
Dependent Claim
19 words
Apparatus as defined in claim 8, said retracting means comprising a fluid pressure cylinder and piston in said beam.
Claim 18
Dependent Claim
11 words
Apparatus as defined in claim 8, said retracting means comprising springs.
Claim 19
Dependent Claim
115 words
Apparatus for lifting a package by a tensioned binding on the package comprising a horizontal beam adapted to be positioned over and parallel with a portion of said tensioned binding extending across the top of the package, a pair of hooking devices on said beam, each hooking device having a pair of opposed horizontal fingers arranged to rest on top of the package on opposite sides of said tensioned binding and support said apparatus on the package, and means for closing each pair of said fingers together in side by side relation causing at lease one finger of each pair to pass under said tensioned binding, whereby the package may be lifted by said beam.
Claim 20
Dependent Claim
115 words
Apparatus for lifting a package by a tensioned binding on the package comprising a horizontal beam adapted to be positioned over and parallel with a portion of said tensioned binding extending across the top of the package, a pair of hooking devices on said beam, each hooking device having a pair of opposed horizontal fingers arranged to rest on top of the package on opposite sides of said tensioned binding and support said apparatus on the package, and means for closing each pair of said fingers together in side by side relation causing at lease one finger of each pair to pass under said tensioned binding, whereby the package may be lifted by said beam.
Claim 21
Dependent Claim
75 words
Apparatus as defined in claim 17, said fingers of each pair being mounted on a pair of slide bars having horizontal side by side sliding movement, said one finger of each pair being a lifting finger and the opposed finger being a holding dog, and a stripper dog on the slide bar carrying said holding dog finger arranged to strip said binding from said lifting finger when said fingers are moved away from each other.
Claim 22
Dependent Claim
33 words
Apparatus as defined in claim 17 including means to extend said hooking devices away from each other on said beam, and means to retract said hooking devices toward each other on said beam.
Claim 23
Dependent Claim
32 words
Apparatus as defined in claim 17, said hooking devices being rotatable relative to each other on the axis of said beam for adjustment to surface irregularities on the top of the package.
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |