Fluid seals
AssigneePamargan Products Limited
InventorsPeter Donaway, Daniel Iwan Jones
Life of this patent
Estimating the term…
Abstract
A fluid seal for sealing a joint between two components in a fluid line has an integral filter. The seal has sealing portions on each side of the filter that are compressed by relative axial movement of the components to effect a fluid-tight seal therebetween with the filter extending across the fluid line. The seal and filter are located in a central hole of a support plate with the seal bonded to the marginal edge of the hole.
Claims13
An integral seal and filter assembly for a fluid line comprising:
- a seal bonded to a peripheral edge region of a filter,
- said seal having a substantially trapezoidal cross-section and including resilient sealing portions on opposite sides of said filter,
- said seal having a first and a second axial face on opposite sides of said filter assembly and being substantially convergent in a radial direction from an inner diameter towards an outer diameter of said filter assembly,
- wherein said inner diameter is substantially flat in an uncompressed condition of said seal and substantially concave in a compressed condition, and
- wherein said sealing portions are compressible between opposed faces of substantially axially movable components to form a seal therebetween with said filter extending across a fluid passageway through the components.
The assembly according to clam 1 wherein, said filter has a barrier separating said peripheral edge region from a centre region for confining said seal to said peripheral edge region.
A method of forming an integral seal and filter assembly comprising the steps of:
- providing a filter,
- bonding a seal to a marginal edge portion of said filter, said seal having a substantially trapezoidal cross-section in an uncompressed condition with a substantially flat inner diameter, a first and a second axial face on opposite sides of said filter assembly and that are substantially convergent in a radial direction from said inner diameter towards an outer diameter of said filter assembly, and
- compressing said sealing portions to form a seal between substantially axially movable components such that said inner diameter is compressed into a substantially concave shape.
An integral seal and filter assembly comprising:
- a seal having a central opening, said seal having a substantially trapezoidal cross-section and including a substantially flat inner diameter in an uncompressed condition of said seal, the seal having side walls extending outwards from opposite ends of said inner diameter, said side walls being substantially convergent in a radial direction away from said inner diameter towards an outer diameter of said filter assembly,
- wherein said inner diameter is substantially concave in a compressed condition, and
- a filter extending across said central opening and having a marginal edge portion bonded to said seal between said side walls.
Dependencies are inferred from the claim text.