Abstract A device for sealing and molecularly lubricating a reciprocating machine member for moving liquids has a stuffing box packing having a plurality of spaced packing rings disposed tightly around the periphery of the reciprocating machine member and is comprised of polytetrafluoroethylene and a fiber mesh. Also provided are a plurality of intermediate rings made of textile mesh hardened with synthetic resin and disposed around the member. Each of these intermediate rings is positioned between a pair of next-adjacent packing rings and has an inner surface bordering the member. The inner surface of each of the intermediate rings is provided with an annular groove. A slitlike passage extends laterally through the respective packing rings for accommodating a flow of the liquid moved by the member, whereby the groove of each of the intermediate rings fills with the liquid for providing a continuous lubrication of the member.
Inventors
👤 Kurt Schettler
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-02 06:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
Device for sealing and molecularly lubricating the plunger member of a piston pump for moving liquids of low viscosity, comprising a stuffing box packing having a plurality of spaced packing rings disposed tightly around the periphery of the plunger member and being comprised of polytetrafluoroethylene and a fiber mesh, a plurality of intermediate rings made of textile mesh hardened with synthetic resin and disposed around said member, each of said intermediate rings being positioned between a pair of next-adjacent packing rings and having an inner surface bordering said member, each of said intermediate rings having a substantially annular groove formed on the inner surface thereof, and slit-like passage means extending laterally through said packing rings for accommodating a flow of the liquid moved by said member, whereby said groove of each of said intermediate rings fills with said liquid for providing a continuous lubrication of said member.
Claim 2
Dependent Claim
147 words
Device for sealing and molecularly lubricating the plunger member of a piston pump for moving liquids of low viscosity, comprising a stuffing box packing having a plurality of spaced packing rings disposed tightly around the periphery of the plunger member and being comprised of polytetrafluoroethylene and a fiber mesh, a plurality of intermediate rings made of textile mesh hardened with synthetic resin and disposed around said member, each of said intermediate rings being positioned between a pair of next-adjacent packing rings and having an inner surface bordering said member, each of said intermediate rings having a substantially annular groove formed on the inner surface thereof, and slit-like passage means extending laterally through said packing rings for accommodating a flow of the liquid moved by said member, whereby said groove of each of said intermediate rings fills with said liquid for providing a continuous lubrication of said member.
Claim 3
Dependent Claim
42 words
In a device according to claim 1, said intermediate rings being adapted to said member so as to have a radial tolerance of less than 0.3mm at the interface of the surface of said member and said inner surface of said rings.
Claim 4
Dependent Claim
24 words
In a device according to claim 1, said slit-like passage means comprising a plurality of slits extending substantially radially through said packing rings respectively.
Claim 5
Dependent Claim
32 words
In a device according to claim 1, said fiber mesh of said packing rings being at least one material, selected from the group consisting of textile fiber mesh and mineral fiber mesh.