초록 ▼

A stabilized seal structure (24,124,224) for use in a seal space (20,120,220) defined by a first wall (17), a second wall (18) confronting the first wall and variably spaced therefrom, a third wall (19) extending across the seal space between the first and second walls, and a fourth wall (16) extend

A stabilized seal structure (24,124,224) for use in a seal space (20,120,220) defined by a first wall (17), a second wall (18) confronting the first wall and variably spaced therefrom, a third wall (19) extending across the seal space between the first and second walls, and a fourth wall (16) extending across the space oppositely of the third wall (19). The seal structure includes a seal member (25,125,225) defining a first leg (26,126,226), a second leg (27,127,227) having a sealing portion (34,134,234) engaging the second wall, and a bight portion (28,128,228) extending adjacent the fourth wall. The legs and bight portion cooperatively define a load member space (29,129,229) receiving a load ring (30,130,230). At least one of the bight portion of the seal ring and the fourth wall is provided with an annular recess (31,13,231) facing the other element. The recess permits compression of the seal ring while effectively maintaining the effective volume of the seal ring space during initial compression of the seal ring by accommodating the portion of the bight of the seal ring overlying the recess during such initial compression. Resultingly, the sealing portion of the seal ring is maintained in effectively fixed relationship to the confronting wall during such initial compression, thereby providing improved stability in the sealing functioning of the seal structure.

대표청구항 ▼

A stabilized seal structure (24,124,224) comprising: a first wall (17,117,217); a second wall (18,118,218) confronting said first wall and variably spaced therefrom to define a variable width seal space therebetween; a third wall (19,119,219) extending across said space at one transverse boundary th

A stabilized seal structure (24,124,224) comprising: a first wall (17,117,217); a second wall (18,118,218) confronting said first wall and variably spaced therefrom to define a variable width seal space therebetween; a third wall (19,119,219) extending across said space at one transverse boundary thereof; a fourth wall (16,116,216) extending across said space at the transverse boundary thereof opposite said one boundary; a seal member (25,125,225) having a C-shaped cross section defining a first leg (26,126,226) engaging said first wall, a second leg (27,127,227) having a sealing end portion (34,134,234) movably engaging said second wall seal portion (35,135,235), and a bight portion (28,128,228) extending adjacent said fourth wall and seal bight portion cooperatively defining a load member space (29,129,229), one of said fourth wall and seal member bight portion being provided with a recess (31,131,231) opening toward the other; and a load member (30,130,230) disposed in said load member space and confronting said third wall, said load member being urged against said third wall and urging said seal member bight portion (41,141,241) overlying said recess into said recess to maintain the engagement of said sealing end portion of the seal member second leg with said second wall being substantially fixed as an incident of initial relative movement between said first and second walls reducing said space (20,120,220) width.