Title: Environmental seals for multidirectional control levers

Abstract: An environmental seal for use with a multidirectional control lever. The seal defines a movable structure including a first closure portion movable with the movable member and a second closure portion cooperating with the first closure portion to effectively maintain an opening through which the movable member extends sealingly closed in all positions of the movable member. The seal includes only two slidable closure elements for effectively sealing the opening in all positions of the movable member. Spring biasing structure may be provided for biasing the closure elements into movable sealed engagement.

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Inventors: Bowen, Robert B. (Edwards, IL, US)
Maier, Roger F. (Peoria, IL, US)
Rediger, John R. (Washington, IL, US)

Application Number: 473139
Filing Date: 1974-05-24
Publication_date: 1976-07-27
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 277/507 277/509
Other Classes:
US Patent Ref:

3179423	Apr, 1965	McCloud	277/30.
3748923	Jul, 1973	Babbitt et al.	277/100.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Schmidt, Frederick R.
Attorney: Wegner, Stellman, McCord, Wiles & Wood