Patent US3604088A successfully refreshed from Google Patents.
US3604088A
Expired / Lapsed
US
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Method and apparatus for making bearings
Assignee: Sargent Industries Inc
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Filing: 1969-12-16
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Granted: 1971-09-14
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Expires: 1989-12-16
Abstract
Abstract A method of, and apparatus for, making a bearing of the type which includes a ball-like inner member and a race circumscribing the inner member. The race is deformed into cooperative sliding engagement with the ball utilizing the energy from a magnetic field.
Inventors
- 👤 Peter H Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:20
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C43/00; F16C43/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49657; Y10T29/49803; Y10T29/53; Y10T29/53104; Y10T29/53109
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
162 words
A method of making a bearing comprising: providing a ball-like inner member having a generally spherical outer bearing surface and a race having an inner surface defining a passage through the race, the inner surface of the race not conforming to the outer bearing surface; positioning the ball-like inner member in the passage of the race with the inner surfacE of the race confronting and surrounding the outer bearing surface and with at least portions of the inner surface and the outer bearing surface being spaced; setting up a varying magnetic field around the race; and maintaining the magnetic field around the race for a sufficient time to permit the magnetic field to transfer sufficient energy to the race to permanently deform the latter radially inwardly to force said inner surface into slidable contact with the outer bearing surface and with the outer bearing surface acting as a die to conform the inner surface of the race to said outer bearing surface.
Claim 2
Independent Claim
162 words
A method of making a bearing comprising: providing a ball-like inner member having a generally spherical outer bearing surface and a race having an inner surface defining a passage through the race, the inner surface of the race not conforming to the outer bearing surface; positioning the ball-like inner member in the passage of the race with the inner surfacE of the race confronting and surrounding the outer bearing surface and with at least portions of the inner surface and the outer bearing surface being spaced; setting up a varying magnetic field around the race; and maintaining the magnetic field around the race for a sufficient time to permit the magnetic field to transfer sufficient energy to the race to permanently deform the latter radially inwardly to force said inner surface into slidable contact with the outer bearing surface and with the outer bearing surface acting as a die to conform the inner surface of the race to said outer bearing surface.
Claim 3
Independent Claim
163 words
A method of making a bearing comprising: providing a ball-like inner member having a generally spherical outer bearing surface and a race having an inner surface defining a passage through the race, the inner surface of the race not conforming to said outer bearing surface; positioning the ball-like inner member in the passage of the race with the inner surface of the race confronting and surrounding the outer bearing surface and with at least portions of the inner surface and the outer bearing surface being spaced; providing a forming coil with the forming coil substantially circumscribing the race; and passing at least one pulse of current through the forming coil so that the magnetic field produced thereby will transfer sufficient energy to the race to deform the latter radially inwardly to force said inner surface into slidable contact with the outer bearing surface and with the outer bearing surface acting as a die to conform the inner surface to the outer bearing surface.
Claim 4
Independent Claim
163 words
A method of making a bearing comprising: providing a ball-like inner member having a generally spherical outer bearing surface and a race having an inner surface defining a passage through the race, the inner surface of the race not conforming to said outer bearing surface; positioning the ball-like inner member in the passage of the race with the inner surface of the race confronting and surrounding the outer bearing surface and with at least portions of the inner surface and the outer bearing surface being spaced; providing a forming coil with the forming coil substantially circumscribing the race; and passing at least one pulse of current through the forming coil so that the magnetic field produced thereby will transfer sufficient energy to the race to deform the latter radially inwardly to force said inner surface into slidable contact with the outer bearing surface and with the outer bearing surface acting as a die to conform the inner surface to the outer bearing surface.
Claim 5
Dependent Claim
30 words
A method as defined in claim 2 wherein the forming coil defines a fluid passage and including passing a fluid coolant through said fluid passage to cool said forming coil.
Claim 6
Independent Claim
119 words
An apparatus for forming a race on a ball-like inner member wherein the race circumscribes the ball-like inner member comprising: a forming coil of a shape to provide a magnetic field which will force the race tightly against the ball-like inner member when the conductor is positioned adjacent the race; means for holding the ball-like inner member and the race adjacent the forming coil; an electrical current source; and means for passing at least one pulse of current from said source through said forming coil to thereby produce said magnetic field with the energy from the magnetic field deforming the race into slidable contact with the ball-like inner member and accurately conforming the race to the ball-like inner member.
Claim 7
Independent Claim
119 words
An apparatus for forming a race on a ball-like inner member wherein the race circumscribes the ball-like inner member comprising: a forming coil of a shape to provide a magnetic field which will force the race tightly against the ball-like inner member when the conductor is positioned adjacent the race; means for holding the ball-like inner member and the race adjacent the forming coil; an electrical current source; and means for passing at least one pulse of current from said source through said forming coil to thereby produce said magnetic field with the energy from the magnetic field deforming the race into slidable contact with the ball-like inner member and accurately conforming the race to the ball-like inner member.
Claim 8
Dependent Claim
32 words
An apparatus as defined in claim 4 wherein said forming coil defines a passage for fluid whereby fluid can be supplied through said passage of said conductor to cool the forming coil.
Claim 9
Dependent Claim
17 words
An apparatus as defined in claim 4 wherein said forming coil has a generally spherical inner surface.
Claim 10
Dependent Claim
16 words
An apparatus as defined in claim 4 wherein said forming coil comprises only a single turn.
Claim 11
Dependent Claim
65 words
An apparatus as defined in claim 4 wherein said source includes a plurality of capacitors, means for charging said capacitors, first switch means for connecting said capacitors in parallel to permit charging of the capacitors, said second switch means for connecting the capacitors in series to permit discharging of the capacitors across said forming coil to thereby provide a pulse of current in said conductor.
Claim 12
Dependent Claim
43 words
An apparatus as defined in claim 4 wherein the forming coil is generally annular in cross section and the axial length of the forming coil is approximately equal to the axial length of the race plus the inside diameter of the forming coil.
Claim 13
Dependent Claim
45 words
An apparatus as defined in claim 4 wherein said forming coil includes a sleevelike member having an axial length at least equal to the axial length of the race, said sleevelike member substantially circumscribing the race and having a pair of closely spaced end portions.
Claim 14
Independent Claim
96 words
A method of making bearings comprising: supporting a plurality of ball-like members within a deformable tube; providing a varying magnetic field at a first station; and advancing the tube with the ball-like members therein through said first station with each of said ball-like members remaining at said first station for a sufficient time to permit the energy from the magnetic field to permanently deform the adjacent portion of the tube into conformity with a portion of the surface of the ball-like member and into sliding contact with said portion of the surface of the ball-like member.
Claim 15
Independent Claim
96 words
A method of making bearings comprising: supporting a plurality of ball-like members within a deformable tube; providing a varying magnetic field at a first station; and advancing the tube with the ball-like members therein through said first station with each of said ball-like members remaining at said first station for a sufficient time to permit the energy from the magnetic field to permanently deform the adjacent portion of the tube into conformity with a portion of the surface of the ball-like member and into sliding contact with said portion of the surface of the ball-like member.
Claim 16
Dependent Claim
29 words
A method as defined in claim 11 including cutting the tube into sections with at least some of the sections having at least one of the ball-like members therein.
Claim 17
Dependent Claim
34 words
A method as defined in claim 11 wherein the step of advancing is carried out intermittently to thereby permit each of the ball-like members to remain at the first station for said sufficient time.
References Cited (Backward Citations)
US3303557A
Cited
US3431625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |