O-ring forming sealing washer

Details O-ring forming sealing washer O-ring forming sealing washer

2006-07-18

2006-07-18

Miller, William L. (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element with nut, washer, securing means or cap

Sealing-type washer compressed by head

C411S542000, C277S634000, C277S644000, C277S924000

Reexamination Certificate

active

07077611

ABSTRACT:
A sealing washer includes a connecting portion and an inner edge portion disposed radially inward of the connecting portion. The inner edge portion terminates in an edge disposed in an edge plane that is offset from the connecting portion. The sealing washer may be used, for example, to form a seal between a bolt and an elastomeric sheet, by forming a tight seal as the bolt is tightened.

REFERENCES:
patent: 2859055 (1958-11-01), Hupp
patent: 3160054 (1964-12-01), Cohen et al.
patent: RE27085 (1971-03-01), Weidner
patent: 3606357 (1971-09-01), Yonkers
patent: 3670618 (1972-06-01), Jellison
patent: 3788185 (1974-01-01), Gutshall
patent: 3882752 (1975-05-01), Gutshall
patent: 4026183 (1977-05-01), Bart
patent: 4292876 (1981-10-01), De Graan
patent: 4934856 (1990-06-01), Pauc
patent: 23 04 471 (1973-08-01), None
patent: 26 42 349 (1977-04-01), None
patent: 1509858 (1978-05-01), None
International Search Report in PCT/US04/05580 dated Jul. 22, 2004.
Written Opinion in PCT/US04/05580 dated Jul. 22, 2004.

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