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(11) | EP 0 138 117 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Non-lubricated tenter frame |
(57) A tenter frame that is free from lubrication requirements along the tenter frame
guide rails is disclosed. The tenter frame includes a pair of parallel, relatively
spaced guide rails including one or more bearing surfaces. A chain is operatively
associated with the guide rails for movement therealong and includes a plurality of
links having one or more bearing surfaces that are generally complementary to the
bearing surfaces of the guide rails. A block of low friction polymer material is attached
to one or more of the link bearing surfaces and is sandwiched between the bearing
surface portions of the guide and the links. The block is comprised of low friction
polymer material and is substantially the only contact between the link and the guide,
so that the tenter frame is free from lubrication requirements. |