US3667696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core gripping and release device
Assignee: Frank F Pershke Ltd
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Filing: 1970-04-22
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Granted: 1972-06-06
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Expires: 1990-04-22
Abstract
Abstract An expandible and contractable device for mounting on a driven shaft of a paper or like handling machine for drivingly engaging the core of a reel of paper and comprising a one-piece cylindrical body part for fixing to said shaft and formed externally with eccentrics, and an outer cylindrical part consisting of trough-like parts having internal eccentrics which combine with those of the body part.
Inventors
- 👤 Reginald J Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
B; B65; B65H; B65H16/00; B65H16/02; B65H16/06; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/248; B65H75/2484; H; H10; H10W; H10W20/00; H10W20/40; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1074; Y10T279/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
246 words
A core gripping and release device for the purpose set forth comprising a cylindrical body part for mounting on a driven machine shaft, said body part including a plurality of pairs of circumferentially extending eccentrics on the outer surface thereof, the eccentrics of each pair spaced apart from each other axially of said body part, a plurality of trough-like segments surrounding said body part to provide an outer axially divided cylinder, each said segment including a pair of eccentrics on the inner face thereof complementary to a related spaced apart pair of eccentrics on said body part, resilient means retaining said segments around said body part, the eccentrics on the inner face of each said segment engaging a related pair of eccentrics on said body part and bridging the unrelated pairs of eccentrics on said body part which are engaged by the eccentrics of the other segments, a synchronizing ring mounted on each end of said body part, pins carried by each of said rings, the enDs of said pins projecting outwardly beyond the opposite faces of said rings, one end of each of said pins engaging an adjacent segment to expand said segments radially outwardly to a maximum throw position in unison to grip the inner cylindrical face of the core of a reel and transmit a drive thereto from said shaft by way of said body part and contract said segments radially inwardly to a minimum throw position in which they release said core.
Claim 2
Dependent Claim
246 words
A core gripping and release device for the purpose set forth comprising a cylindrical body part for mounting on a driven machine shaft, said body part including a plurality of pairs of circumferentially extending eccentrics on the outer surface thereof, the eccentrics of each pair spaced apart from each other axially of said body part, a plurality of trough-like segments surrounding said body part to provide an outer axially divided cylinder, each said segment including a pair of eccentrics on the inner face thereof complementary to a related spaced apart pair of eccentrics on said body part, resilient means retaining said segments around said body part, the eccentrics on the inner face of each said segment engaging a related pair of eccentrics on said body part and bridging the unrelated pairs of eccentrics on said body part which are engaged by the eccentrics of the other segments, a synchronizing ring mounted on each end of said body part, pins carried by each of said rings, the enDs of said pins projecting outwardly beyond the opposite faces of said rings, one end of each of said pins engaging an adjacent segment to expand said segments radially outwardly to a maximum throw position in unison to grip the inner cylindrical face of the core of a reel and transmit a drive thereto from said shaft by way of said body part and contract said segments radially inwardly to a minimum throw position in which they release said core.
Claim 3
Dependent Claim
56 words
A device as claimed in claim 1 including fixed stop pins mounted on said body part, the other end of said ring-mounted pins engaging said fixed stop pins to arrest movement of the segments when they are contracted and moved radially inwardly to coincide with minimum of throw when they are in a core release position.
Claim 4
Dependent Claim
247 words
A core gripping and release device for the purpose set forth comprising a cylindrical body part for mounting on a driven machine shaft, said body part including a plurality of pairs of circumferentially extending eccentrics on the outer surface thereof, the eccentrics of each pair spaced apart from each other axially of said body part, a plurality of trough-like segments surrounding said body part to provide an outer axially divided cylinder, each said segment including a pair of eccentrics on the inner face thereof complementary to a related spaced apart pair of eccentrics on said body part, resilient means retaining said segments around said body part, the eccentrics on the inner face of each said segment engaging a related pair of eccentrics on said body part and bridging the unrelated pairs of eccentrics on said body part which are engaged by the eccentrics of the other segments, a synchronizing ring mounted on each end of said body part, said segments having recesses in the ends thereof, a drive ring fitted on each end of said body part, a plurality of dogs on said drive ring, said dogs engaging in said recesses to expand said segments radially outwardly to a maximum throw position in unison to grip the inner cylindrical face of the core of a reel and transmit a drive thereto from said shaft by way of said body part, and contract said segments radially inwardly to a minimum throw position in which they release said core.
Claim 5
Dependent Claim
247 words
A core gripping and release device for the purpose set forth comprising a cylindrical body part for mounting on a driven machine shaft, said body part including a plurality of pairs of circumferentially extending eccentrics on the outer surface thereof, the eccentrics of each pair spaced apart from each other axially of said body part, a plurality of trough-like segments surrounding said body part to provide an outer axially divided cylinder, each said segment including a pair of eccentrics on the inner face thereof complementary to a related spaced apart pair of eccentrics on said body part, resilient means retaining said segments around said body part, the eccentrics on the inner face of each said segment engaging a related pair of eccentrics on said body part and bridging the unrelated pairs of eccentrics on said body part which are engaged by the eccentrics of the other segments, a synchronizing ring mounted on each end of said body part, said segments having recesses in the ends thereof, a drive ring fitted on each end of said body part, a plurality of dogs on said drive ring, said dogs engaging in said recesses to expand said segments radially outwardly to a maximum throw position in unison to grip the inner cylindrical face of the core of a reel and transmit a drive thereto from said shaft by way of said body part, and contract said segments radially inwardly to a minimum throw position in which they release said core.
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) | 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 |