Unitized seal with integral spacer

Details Unitized seal with integral spacer Unitized seal with integral spacer

2009-06-24

2010-12-07

Stomer, Russell D (Department: 3617)

Wheel substitutes for land vehicles

With means to remove or exclude foreign matter

With peripheral seal between bushing and track link

C305S105000, C305S106000, C277S361000, C277S390000

Reexamination Certificate

active

07845740

ABSTRACT:
A unitized seal assembly is provided for installation between linkages of a chain drive designed for tracked vehicles. The seal assembly facilitates field preventative maintenance on the drive chain by utilizing an integral spacer that holds the critical sealing surfaces together at all times, and has a seal head that can be easily removed from the outer link bore of a chain link. Removal of the seal head from the outer link bore causes as-installed clearance passageways between the seal head and seat portions and the spacer to forcefully close and prevent abrasive particles from getting inside the seal and reaching the interior interface junction of the dynamic sealing surfaces during seal maintenance. The seal assembly also includes additional sealing features that provide improved performance.

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