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US 5,492,413 AGranted
Sealing device for a linear guide
AssigneeNsk Ltd.
InventorToru Tsukada
Life of this patent
Estimating the term…
Abstract
A sealing device for a linear guide providing a guide rail and a slider, which is mounted on each of both ends of the slider so as to sealingly close the gaps between the inner surface of the slider and the outer surface of the guide rail, provides a first layer of rubber or synthetic resin and a second layer of lubricant-contained rubber of synthetic resin which are at least partially laid on and bonded to each other, so that the lubricant is kept supplied from the second layer to the surfaces with which the sealing device is sealingly in contact.
Claims9
A linear guide comprising:
- a guide rail;
- a plurality of rolling elements;
- a slider linearly moved on said guide rail through said rolling elements;
- and
- a sealing device secured to an end of said slider for closing a gap between an inner surface of said slider and an outer surface of said guide rail,
- wherein said sealing device includes a first layer of a first seal member formed of a material selected from rubber and synthetic resin and a second layer of a second seal member formed of a lubricant-contained material selected from rubber and synthetic resin, said second layer is provided on said first layer, and
- said sealing device has a seal lip formed in at least said second layer so that said seal lip contacts the outer surface of said guide rail for sealingly closing the gap between the inner surface of said slider and the outer surface of said guide rail.
4 more elements
Dependencies are inferred from the claim text.