Patent ID: 6412784
Filing Date: 2002-07-02
Classification: F16J,Y10S

Abstract:
A mechanical face seal combination suitable for use in connection with machinery of the type wherein an axially rotative shaft passes through an immobile housing, said combination comprising a first annulus, a second annulus and support apparatus; said first annulus having a first annular face which is at least substantially planar; said second annulus having a second annular face which is at least substantially planar; said first annulus essentially constituting a unitary component of said combination, essentially consisting of a non-polymeric matrix-reinforcement composite material, and essentially having been formed as an integral whole so as to be characterized by structural integrity wherein said reinforcement contributes to said structural integrity of said first annulus; said second annulus essentially constituting a unitary component, essentially consisting of a polymeric matrix-reinforcement composite material, and essentially having been formed as an integral whole so as to be characterized by structural integrity wherein said reinforcement contributes to said structural integrity of said second annulus; said support apparatus including biasing means; said first annulus, said second annulus and said support apparatus being adaptable to arrangement wherein said first annulus is attached to said housing, said support apparatus is attached to said shaft, said first annular face and said second annular face coaxially abut so as to essentially describe the slidable rotatable engagement of said non-polymeric matrix-reinforcement composite material and said polymeric matrix-reinforcement composite material, and said support apparatus holds said second annulus in position with respect to said shaft whereby said biasing means contactingly presses said second annulus so as to approximately axially bias said second annular face against said first annular face; said first annulus being characterized by sufficient said structural integrity for withstanding said attachment to said housing; said second annulus being characterized by sufficient said structural integrity for withstanding said holding by said support apparatus, said withstanding of said holding including withstanding of said contacting pressing by said biasing means.