US3924908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller with inserted ball bearings
Assignee: Unex Conveying Systems Inc
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Filing: 1973-12-07
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Granted: 1975-12-09
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Expires: 1993-12-07
Abstract
Abstract A tubular roller with inserted ball bearings, each of said ball bearings including: a generally tubular plastic outer shell or housing containing at least one internal annular groove into which is inserted at least one circular ring, preferably metallic, to serve as the outer raceway; a hub which may be of plastic material with at least one external annular groove with one or more rings, preferably metallic, contained therein to serve as the inner raceway; and a full complement of balls, preferably metallic, between the two raceways.
Inventors
- 👤 Robert W Gotham
- 👤 Robert J Mcknight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C13/00; F16C13/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A tubular roller with inserted ball bearings, said bearings including a plastic housing containing a conical opening at one end and at least one internal annular groove with inclined side walls into which groove a bearing outer raceway is pressed, said raceway consisting of at least one ring said ring forming at least a part of a groove which serves as said outer ball race way.
Claim 2
Dependent Claim
66 words
A tubular roller with inserted ball bearings, said bearings including a plastic housing containing a conical opening at one end and at least one internal annular groove with inclined side walls into which groove a bearing outer raceway is pressed, said raceway consisting of at least one ring said ring forming at least a part of a groove which serves as said outer ball race way.
Claim 3
Dependent Claim
61 words
A tubular roller according to claim 1 further compresses a bearing hub consisting of a plastic sleeve with an external annular groove having sloping side walls, onto which an outer ring is pressed, said ring having an external annular groove, and said ring being retained firmly in placed by the sloping side walls of said annular groove in said plastic sleeve.
Claim 4
Dependent Claim
61 words
A cartridge-type ball bearing including a plastic housing containing a conical opening at one end and at least one internal annular groove with inclined side walls into which groove a bearing outer raceway is pressed, said raceway consisting of at least one ring, said ring forming at least a part of a groove which serves as said outer ball race way.
Claim 5
Dependent Claim
61 words
A cartridge-type ball bearing including a plastic housing containing a conical opening at one end and at least one internal annular groove with inclined side walls into which groove a bearing outer raceway is pressed, said raceway consisting of at least one ring, said ring forming at least a part of a groove which serves as said outer ball race way.
Claim 6
Dependent Claim
63 words
A cartridge type ball bearing according to claim 3 further comprises a bearing hub consisting of a plastic sleeve with an external annular groove, having sloping side walls, onto which an outer ring is pressed, said ring having an external annular groove, and said ring being retained firmly in place by the sloping side walls of said annular groove in said plastic sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |