Patent US3734660A successfully refreshed from Google Patents.
US3734660A
Expired / Lapsed
US
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Apparatus for fabricating a bearing device
Assignee: Tuthill Pump Co
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Filing: 1971-06-17
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Granted: 1973-05-22
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Expires: 1991-06-17
Abstract
Abstract An apparatus for fabricating a bearing device comprising a housing having an opening therethrough, a ball-shaped swivel member positioned within the opening and spaced from the surface of the housing which defines the opening, and a raceway of solidified bearing material in the space between the swivel member and housing, the raceway having a swiveling clearance with and retaining said swivel member in the housing, the inner surface of the raceway being shaped to correspond to a part of an elongated sphere. In the fabrication of this bearing device, the swivel member is reciprocated relative to the housing during the hardening of liquefied bearing material injected into the space between the swivel member and housing. The apparatus which accomplishes this method includes relatively movable members which engage, respectively, the housing and the swivel member, these mold members providing the relative reciprocatory movement.
Inventors
- 👤 G Davies
- 👤 R Loubier
- 👤 J Weston
- 👤 R Muhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:05
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14754; F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
For molding a raceway into a bearing assembly, said bearing assembly including a supporting member provided with an opening therethrough, and a ball-shaped swivel member mounted within said opening and spaced from the surface of said supporting member which defines said opening, said space being annular in shape and having opposite open ends; apparatus comprising first mold means for at least partially closing the opposite ends of said space, second means for holding said swivel member in position in said opening and for completing the closure of said opposite ends, said first and second means being relatively movable whereby said swivel member may be moved relative to said supporting member, means for moving in an alternating pattern said first and second means relative to each other in a direction generally parallel to the axis of said space, and means for filling said space with liquefied hardenable bearing material.
Claim 2
Dependent Claim
148 words
For molding a raceway into a bearing assembly, said bearing assembly including a supporting member provided with an opening therethrough, and a ball-shaped swivel member mounted within said opening and spaced from the surface of said supporting member which defines said opening, said space being annular in shape and having opposite open ends; apparatus comprising first mold means for at least partially closing the opposite ends of said space, second means for holding said swivel member in position in said opening and for completing the closure of said opposite ends, said first and second means being relatively movable whereby said swivel member may be moved relative to said supporting member, means for moving in an alternating pattern said first and second means relative to each other in a direction generally parallel to the axis of said space, and means for filling said space with liquefied hardenable bearing material.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 in which said first mold means closes a larger portion of said opposite open ends than does said second means.
Claim 4
Dependent Claim
55 words
The apparatus of claim 1 in which said first mold means includes a die having a bore portion therein, said second means includes two clamping elements tandemly arranged and received for reciprocation by said bore portion, and said clamping elements having separated facing surfaces engageable with said swivel member for holding the latter in place.
Claim 5
Dependent Claim
87 words
The apparatus of claim 3 in which the bore portion of said die has separated facing mold surfaces which define a mold space therebetween and serve as the partial closure for the opposite ends of said annular space, said clamping elements having opposed mold surfaces, respectively, disposed adjacent to said die mold surfaces, respectively, which serve to complete the closure of said opposite ends, said die mold surfaces closing a larger radial portion of said opposite open ends than do the mold surfaces of said clamping elements.
Claim 6
Dependent Claim
68 words
The apparatus of claim 4 including said supporting and swivel members, said supporting member being clamped between Said die mold surfaces and said swivel member being clamped between said clamping elements whereby said space is defined on the outer periphery by said supporting member, the inner periphery by said swivel member, and at the ends by said die mold surfaces and the mold surfaces of said clamping elements.
Claim 7
Dependent Claim
163 words
The apparatus of claim 3 in which said first mold means closes a larger portion of said opposite open ends than does said second means, said die including two mold sections selectively movable into and out of operative engagement with each other, said mold sections having parting surfaces which are sealingly engageable with each other, a cavity in said die defined by two portions in said parting surfaces, respectively, said cavity being intersected by said bore portion and having a shape conforming to that of said bearing assembly supporting member, said cavity having opposite ends, one end being in one cavity portion and the other end being in the other cavity portion, the last-mentioned ends being defined by separated facing surfaces which extend radially inwardly of said opening to define circular end closures for the opposite open ends of said space, an injection sprue in said die leading to said cavity, and an overflow sprue in said die leading away from said cavity.
Claim 8
Dependent Claim
58 words
The apparatus of claim 6 including means yieldably urging said clamping elements toward each other, said facing surfaces of said clamping elements being shaped to conform to the shape of said swivel member, and reciprocating means engaged with one of said clamping elements for alternately forcing said one element toward the other thereby to reciprocate both in unison.
Claim 9
Dependent Claim
40 words
The apparatus of claim 7 in which said urging means includes a compression spring engaging the other of said clamping elements, and a locating pin secured to one clamping element and extending coaxially across the space between said clamping elements.
Claim 10
Dependent Claim
48 words
The apparatus of claim 5 in which the surface of said swivel member that defines said inner periphery of said annular space is substantially spherical, and the surface of said supporting member that defines the outer periphery of said annular space is at least in part substantially spherical.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |