Motor vehicle seal assembly and method of manufacture
AssigneeHahn Elastomer Corporation
InventorKenneth W. Rood
Life of this patent
Estimating the term…
Abstract
A motor vehicle has a first body part with a seal support flange thereon that supports a unitary seal construction having a flexible bulb seal portion engageable with second vehicle body part including a hood or other vehicle body part for sealing against leakage between the first and second vehicle body parts and an integrally formed base portion and wherein the flexible bulb seal is hollow and is formed of a soft low density thermoplastic foam and the integrally formed base portion is integrally extruded with the flexible bulb seal and is formed solely from polymeric material having spaced walls defining a recess for fitting the unitary seal construction in place on the support flange.
Claims31
A seal construction which is an extrusion comprised of a single unitary extruded member having a first seal portion configured as a flexible low-density foam seal, a second base portion configured as a base of rigid plastic and a third attachment portion joining the rigid plastic and the low density foam seal;
- the third portion is a bar comprised of a rigid thermoplastic material made of material differing from that of the first and second portions.
A method for making a tripartrite seal comprising:
- providing a die having first, second and third regions for forming, respectively, a bulb seal, a rigid base and a connection there between;
- providing first, second and third plastic materials;
- and coextruding the first, second and third plastic materials, respectively through said first, second and third regions for forming a three-piece integral seal assembly.
Dependencies are inferred from the claim text.