Winding – tensioning – or guiding – Coil holder or support – Radially expansible or contractile
Patent
1997-10-21
1999-09-07
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Radially expansible or contractile
2425715, 2425451, 2424224, 2425303, B65H 1804, B65H 1602, B65H 7524, B65H 7530
Patent
active
059474092
ABSTRACT:
A spring finger assembly (16) for a mechanism for transporting or tensioning thin membrane material that includes a shaft (14) and a roller (12) disposed about the shaft. The spring finger assembly (16) is mounted to the roller (12) for engaging a spool of thin membrane material. The spring finger assembly (16) comprises a plurality of interlocking spring fingers (30), each of which includes a leading portion (34) that extends free. The spring fingers (30) together define a generally cylindrical channel (32) for receiving the roller (12). Each spring finger (30) includes three hooks (40) and defines three apertures (42). The hooks (40) of each spring finger (30) are received by the apertures (42) of one of the other spring fingers (30) interlocking the one of the other spring fingers. The leading portion (34) of each spring finger (30) includes a leading edge (36) that is deflected for engaging the spool and includes two beveled ends (48) for facilitating the placement and removal of the spool. The roller (12) desirably is configured to impose a torque resistance between the spool and shaft (14).
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