Sealing member
AssigneeBridgestone Corporation
InventorsKatsuya Seki, Hideo Goto, Shinji Saito
Life of this patent
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Abstract
A sealing member is provided which has low permeability in the direction perpendicular to the compressing direction, has excellent water sealing capability, and can be elastically deformed at an increased rate. The sealing member is interposed between parts. The sealing member is composed of synthetic resin foam or rubber foam. The ratio of the permeability A in a compressing direction at non-compressed state to the permeability B in a direction perpendicular to the compressing direction at 50% compressed state in the compressing direction, that is A/B, is 1-40. The foam is punched to form needle holes from both sides in the compressing direction by needle punches 5, thereby manufacturing the sealing member.
Claims8
A sealing member to be interposed between parts, said sealing member being composed of synthetic resin foam or rubber foam, wherein the ratio of the permeability A in a compressing direction at non-compressed state to the permeability B in a direction perpendicular to the compressing direction at 50% compressed state in the compressing direction, that is A/B, is 1-40.
Dependencies are inferred from the claim text.