Patent ID: 7178810
Filing Date: 2007-02-20
Classification: E06B,F16J,Y10S

Abstract:
1. A closure seal including an elongated pneumatically inflatable sealing element and means for mounting and retaining said sealing element, wherein (a) said sealing element comprises an elongated section of elastomeric material including a relatively stiff and flat base portion of predetermined width and a flexible portion comprising spaced apart side wall portions joining opposite side edge portions of said base portion and an outer wall portion joining with said side wall portions and forming therewith a hollow, expandable portion, (b) said base portion being of greater thickness than said side wall portions and having opposite side edge extremities projecting beyond lower portions of said side wall portions to form shoulders, (c) said mounting and retaining means comprising a channel member of u-shaped cross section having a base wall and spaced apart side walls defining a reception channel for said sealing element, (d) said channel side walls being spaced apart a distance slightly greater than the predetermined width of said sealing element base portion whereby said base portion can be positioned against the base wall of said channel member, (e) a plurality of longitudinally spaced apart, opposed pairs of projections extending inwardly from said channel side walls and forming respective longitudinally spaced apart constrictions in said reception channel, (f) said projections being spaced from said base wall a distance to engage said shoulders, (g) the width of said constrictions being at least slightly less than the width of said base portion, whereby said base portion may be forced past said constrictions and thereafter retained in said mounting and retaining means by engagement of said projections with said shoulders.