Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1975-04-23
1976-02-10
McCarthy, Edward J.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
B65H 7518
Patent
active
039374122
ABSTRACT:
This invention pertains to a segmented expanding sleeve for an expanding mandrel or chuck in which air or hydraulic fluid is fed to and into a resilient tube or tubes arranged in a longitudinal or in a helical manner. This tube or these tubes are carried by and in grooves formed in the body and when pressurized air or fluid is fed into the tube means the tube or tubes are expanded in a controlled manner to outwardly move a plurality of like-linked leaf members or segments. Each leaf member has one longitudinal edge formed with a keyhole-type groove and the other edge of each leaf is formed with a tongue member having an enlarged outer portion. In an assembled condition the tongue member of one leaf is mounted in the keyhole groove of the next adjacent leaf and these tongue and groove arrangements provide an outer limit to the expansion. Resilient inner tying members extend between leaf members and retain and draw the leaf members into an inner limit against the body of the chuck. Usually one or more of these leaf members are mounted on pins carried in the body. These pins transmit the torque from the outer leaf members to the core member and vice versa.
REFERENCES:
patent: 3273817 (1966-09-01), Damiron
patent: 3825167 (1974-07-01), Komorek
patent: 3863857 (1975-02-01), Smith
McCarthy Edward J.
Roberts Ralph R.
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