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US4483569A Expired / Lapsed US ⏱️ 0.0 years remaining

Sealed ball and socket joints capable of disassembly

Assignee: ZF Lemforder LLC
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Filing: 1981-12-18
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Granted: 1984-11-20
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Expires: 2001-12-18
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Abstract

Abstract Sealed ball and socket joints having a spherical member capable of swiveling relative to a socket member. A bearing ring disposed with or without clearance in a housing has a concave spherical surface portion in swiveling engagement with the ball member, and a pair of symmetrically disposed resilient rings installed between the bearing ring and the inner surface of the housing constantly urge the bearing surface of the bearing ring in engagement with the spherical member surface to prevent rattle and to compensate for wear. A bellows seal, formed integrally with one of the resilient rings or, alternatively, formed separate, is fastened at one end in the shell. The bellows seal is held elastically at its other end around a portion of the spherical member. A second seal, disposed in the same manner, seals the gap between the shell and the spherical member in some structures, or the other end of the housing is closed by a separate end cap in other structures wherein the spherical member is a ball formed on the end of a stud. The bearings are prepacked with a lubricant, and the elements, including the resilient rings, are held in assembly by at least one spring snap ring retainer permitting disassembly for repacking with lubricant or for repairing the joints.

Inventors

  • 👤 Joseph E. Smith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 07:18
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C11/0619; F16C11/0623; F16C11/0652; F16C11/0666; F16C11/0671; F16J; F16J15/00; F16J15/50; F16J15/52; B; B60; B60G; B60G2204/00; B60G2204/40; B60G2204/416

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 227 words
In a sealed bearing comprising an inner member having a peripheral surface of regular predetermined contour, a tubular housing, a bearing ring disposed in said housing and having a bearing surface in sliding engagement with the peripheral surface of said inner member, said bearing ring having a peripheral surface generally conforming to the inner surface of said housing and fitting in said housing, a pair of resiliently deformable rings each made of elastomeric material and each disposed on one side of said bearing ring, means in said housing holding said deformable rings under compression such as to firmly engage said deformable rings with a portion of said bearing ring towards the peripheral surface of said inner member, an elastomeric bellows seal having a flange at an end held by one of said means in said housing for holding one of said deformable rings under compression, said bellows seal having a garter flange at its other end in firm elastic engagement with a portion of the peripheral surface of said inner member, and sealing means at the other end of said housing sealing the interior of said housing and said bearing surfaces from the ambient, the improvement comprising a groove in the inner surface of said housing and one of said holding means being in the form of a springingly expandable removable retaining ring disposed in said groove.
Claim 2
Dependent Claim 227 words
In a sealed bearing comprising an inner member having a peripheral surface of regular predetermined contour, a tubular housing, a bearing ring disposed in said housing and having a bearing surface in sliding engagement with the peripheral surface of said inner member, said bearing ring having a peripheral surface generally conforming to the inner surface of said housing and fitting in said housing, a pair of resiliently deformable rings each made of elastomeric material and each disposed on one side of said bearing ring, means in said housing holding said deformable rings under compression such as to firmly engage said deformable rings with a portion of said bearing ring towards the peripheral surface of said inner member, an elastomeric bellows seal having a flange at an end held by one of said means in said housing for holding one of said deformable rings under compression, said bellows seal having a garter flange at its other end in firm elastic engagement with a portion of the peripheral surface of said inner member, and sealing means at the other end of said housing sealing the interior of said housing and said bearing surfaces from the ambient, the improvement comprising a groove in the inner surface of said housing and one of said holding means being in the form of a springingly expandable removable retaining ring disposed in said groove.
Claim 3
Dependent Claim 63 words
The improvement of claim 1 wherein said sealing means is a second elastomeric bellows seal having a flange at an end held by the other of said means in said housing holding said deformable rings under compression, said bellows seal having a garter flange at its other end in firm elastic engagement with a portion of the peripheral surface of said inner member.
Claim 4
Dependent Claim 21 words
The improvement of claim 2 wherein one of said resiliently deformable rings is an annular integral flange of said bellows seal.
Claim 5
Dependent Claim 30 words
The improvement of claim 3 further comprising a second groove in the inner surface of said housing, and a second springably expandable removable retaining ring disposed in said second groove.
Claim 6
Dependent Claim 30 words
The improvement of claim 1 further comprising a second groove in the inner surface of said housing, and a second springably expandable removable retaining ring disposed in said second groove.
Claim 7
Dependent Claim 30 words
The improvement of claim 2 further comprising a second groove in the inner surface of said housing, and a second springably expandable removable retaining ring disposed in said second groove.

References Cited (Backward Citations)

US3350122A Cited
GB1077899A Cited
US3361458A Cited
US4034996A Cited
US4003666A Cited
US4138168A Cited
US4235489A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-11-20 1988-05-21 1988-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-11-20 1992-05-21 1992-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-11-20 1996-05-21 1996-11-20 $7700.00 Window Closed / Lapsed

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