Title: Follower plate wiper

Abstract: A follower plate assembly for industrial drums includes an improved lip seal construction. The follower plate assembly has a projecting ledge to support a circumferential seal. The seal has a U-shaped cross section. The legs of the seal project radially into engagement with the container wall. The crown of the seal engages the follower plate. The ledge prevents axial movement of the seal. A circumferential band in combination with a ring or locking pins retain the seal on the follower plate.

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Inventors: Dominique, Cecil G. (Bryan, OH, US)

Application Number: 868501
Filing Date: 1978-01-11
Publication_date: 1980-06-24
Assignee: The Aro Corporation (Bryan, OH)
Primary Class(es): 220/578 220/222, 277/437, 277/921
Other Classes:
US Patent Ref:

876853	Jan, 1908	Wille	92/257.
1121057	Dec, 1914	Willcox et al.	220/222.
1465540	Feb, 1922	Morris	92/257.
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2778695	Jan, 1957	Sturtevant	277/206.
2783106	Feb, 1957	Barnhart	277/206.
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3164289	Jan, 1965	Cocchiarella	220/93.
3314683	Apr, 1967	Schmidt et al.	277/206.
3319329	May, 1967	Knutsen et al.	220/220.
3439829	Apr, 1969	Thompson et al.	220/222.
3563557	Feb, 1971	Doutt	277/206.
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3781942	Jan, 1974	Coleman	220/93.

Other Refs: 672062460407

Dec, 1929	FR
Jan, 1937	GB

Primary Examiner: Shoap, Allan N.
Assistant Examiner:
Attorney: Allegretti, Newitt, Witcoff & McAndrews