US3734328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll lifter
Assignee: TILT-LOCK Inc MINNEAPOLIS
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Filing: 1972-01-06
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Granted: 1973-05-22
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Expires: 1992-01-06
Abstract
Abstract Apparatus to lift a roll of material or other object having a central opening comprising a probe designed to engage the inside walls of the center aperture of the roll which probe is pivotally mounted on an articulated bracket. The probe is held in position by a chain passing over the articulated bracket. As the bracket is pivoted upwards the probe is caused to pivot downward into a vertical position. In another embodiment a hydraulically actuated clamp is incorporated onto the probe so as to grasp the roll from the outside in conjunction with the internally grasping probe.
Inventors
- 👤 H Dalglish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:03
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B21; B21C; B21C47/00; B21C47/24; B21C47/242; Y; Y10; Y10S; Y10S414/00; Y10S414/124
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
An apparatus for engaging and lifting rolls of material in either a vertical or horizontal position comprising: a vertical lifting means; bracket means adapted to be lifted by said vertical lifting means; an arm pivoted at a first end on said bracket means; a hydraulic cylinder between said bracket means and the second end of said arm; a probe with means therein adapted to engage the inside walls of the center of the roll of material, said probe pivoted at the second end of said arm; a flexible connecting means extending from said bracket means over a guide bearing to said probe so as to hold said probe in a horizontal position when said arm is pivoted downward and in a downward position when said arm is pivoted to a horizontal position.
Claim 2
Independent Claim
132 words
An apparatus for engaging and lifting rolls of material in either a vertical or horizontal position comprising: a vertical lifting means; bracket means adapted to be lifted by said vertical lifting means; an arm pivoted at a first end on said bracket means; a hydraulic cylinder between said bracket means and the second end of said arm; a probe with means therein adapted to engage the inside walls of the center of the roll of material, said probe pivoted at the second end of said arm; a flexible connecting means extending from said bracket means over a guide bearing to said probe so as to hold said probe in a horizontal position when said arm is pivoted downward and in a downward position when said arm is pivoted to a horizontal position.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 in which said guide bearing comprises a generally round bearing block pivoted about the point at which said hydraulic cylinder is mounted to said bracket means.
Claim 4
Dependent Claim
28 words
The apparatus of claim 2 in which said connecting means comprises a chain connected between an adjustment block on the bracket means and a bracket on said probe.
Claim 5
Dependent Claim
37 words
The apparatus of claim 1 including a hydraulically actuated clamp mounted and extending out from the probe to engage the outside of said roll of material in conjunction with said probe engaging the center of the roll.
Claim 6
Dependent Claim
37 words
The apparatus of claim 3 including a hydraulically actuated clamp mounted and extending out from the probe to engage the outside of said roll of material in conjunction with said probe engaging the center of the roll.
Claim 7
Dependent Claim
34 words
The apparatus of claim 5 in which said arm comprises a pair of members, said hydraulic cylinder being mounted between said pair of members and said chain passing generally between said pair of members.
Claim 8
Dependent Claim
48 words
The structure of claim 1 and in which the hydraulic cylinder is connected to said bracket means and to said second end of said arm on parallel axes, and said first end of said arm is pivoted on said bracket on an axis parallel to said parallel axes.
Claim 9
Dependent Claim
35 words
The structure of claim 7 and in which the axis connecting said first end of said arm is connected to said bracket at a point substantially below the axis connecting said cylinder to said bracket.
Claim 10
Dependent Claim
36 words
The structure of claim 8 and in which said axis connecting said cylinder to said bracket is farther from said vertical lifting means than said axis connecting said first end of said arm to said bracket.
Claim 11
Dependent Claim
38 words
The structure of claim 1 and including a stabilizing link pivotally connecting said flexible connecting means to said probe, said stabilizing link engaging the upper end of said probe when said arm is pivoted to a horizontal position.
References Cited (Backward Citations)
US2841300A
Cited
US3134620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |