US3625575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifriction roller
Assignee: Amerock Corp
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Filing: 1969-08-08
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Granted: 1971-12-07
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Expires: 1989-08-08
Abstract
Abstract An antifriction roller for use in a drawer slide. The roller is formed by a generally cylindrical inner race, a plurality of balls seated in the inner race, an outer race telescoped over the balls and the inner race, and a cup-shaped nylon tire formed with a bottom wall and a sidewall telescoped over the outer race. A radially outwardly extending shoulder is formed around the periphery of the outer race and is seated in an annular groove in the tire with a snap fit to held hold the tire on the outer race. To reduce the tendency of the tire to separate axially from the outer race, a lip is formed on the sidewall of the tire and bears against the outer race. The lip is formed from the material of the sidewall after the tire has been telescoped over the outer race. To accomplish this, a circular die is pressed against the inner portion of the end of the sidewall to deform the material of the inner portion of the sidewall and mold the deformed material in a cold operation into the lip. The lip is formed between the outer die and the outer race thus causing one surface of the lip to engage the outer surface of the outer race and to assume the shape of the outer surface of the outer race.
Inventors
- 👤 Lee T Darnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:20
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/006; A; A47; A47B; A47B88/00; A47B88/40; A47B88/437; F16C29/00; F16C29/04; F16C29/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49696
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
165 words
An antifriction roller comprising a bearing having a generally cylindrical inner race, a plurality of balls seated in said race, an outer race telescoped over said inner race and said balls and formed with a radially outwardly extending flange around its outer periphery, a cup-shaped tire of plastic material having a sidewall and a bottom wall with the sidewall of the tire telescoped over said outer race, and a groove formed in said tire with said flange being seated in said groove with a snap fit to hold said tire on said outer race, the improvement in said roller comprising, an annular lip formed around the inner side of said sidewall and extending inwardly therefrom into bearing engagement with said outer race at a location spaced axially from said flange, said lip being formed on said tire after said tire is telescoped on said outer race and coacting with said flange and said groove to restrict axial separation of the tire from the outer race.
Claim 2
Dependent Claim
165 words
An antifriction roller comprising a bearing having a generally cylindrical inner race, a plurality of balls seated in said race, an outer race telescoped over said inner race and said balls and formed with a radially outwardly extending flange around its outer periphery, a cup-shaped tire of plastic material having a sidewall and a bottom wall with the sidewall of the tire telescoped over said outer race, and a groove formed in said tire with said flange being seated in said groove with a snap fit to hold said tire on said outer race, the improvement in said roller comprising, an annular lip formed around the inner side of said sidewall and extending inwardly therefrom into bearing engagement with said outer race at a location spaced axially from said flange, said lip being formed on said tire after said tire is telescoped on said outer race and coacting with said flange and said groove to restrict axial separation of the tire from the outer race.
Claim 3
Dependent Claim
42 words
The antifriction roller of claim 1 in which a portion of the outer surface of said outer race is curved and in which said lip is deformed against said curved portion and presents a mating curved surface which engages said curved portion.
Claim 4
Dependent Claim
100 words
An antifriction roller comprising, in combination, a bearing having a generally cylindrical inner race, a plurality of balls seated in said race, an outer race telescoped over said inner race and said balls, a tire telescoped over said outer race, engageable surfaces on said tire and said outer race for restricting axial separation of said tire from the outer race, and a lip formed on said tire and extending inwardly therefrom in hugging engagement with said outer race at a location spaced axially from said engageable surfaces thereby to further restrict axial separation of said tire from said outer race.
Claim 5
Dependent Claim
100 words
An antifriction roller comprising, in combination, a bearing having a generally cylindrical inner race, a plurality of balls seated in said race, an outer race telescoped over said inner race and said balls, a tire telescoped over said outer race, engageable surfaces on said tire and said outer race for restricting axial separation of said tire from the outer race, and a lip formed on said tire and extending inwardly therefrom in hugging engagement with said outer race at a location spaced axially from said engageable surfaces thereby to further restrict axial separation of said tire from said outer race.
Claim 6
Dependent Claim
61 words
The antifriction roller of claim 3 in which said surfaces include a groove formed in and extending around the inner side of said tire, a radiAlly outwardly extending flange formed around the periphery of said outer race and seated in said flange, said lip being an annular lip integral with and extending around said tire and spaced axially from said groove.
Claim 7
Dependent Claim
44 words
The antifriction roller of claim 4 in which said tire is cup-shaped and has a bottom wall and a sidewall, said lip being formed on said sidewall and disposed on the inner side of the opposite side of said groove from said bottom wall.
Claim 8
Dependent Claim
74 words
The antifriction roller of claim 5 in which a portion of the outer surface of said outer race is curved to converge toward said inner race as the outer race extends axially away from said bottom wall, said lip being deformed from said sidewall after said tire is telescoped onto said outer race with said lip being formed into a curved surface which curves around and engages said curved portion of said outer race.
Claim 9
Independent Claim
110 words
The method of forming an antifriction roller comprising the steps of: a. telescoping an outer bearing race over a generally cylindrical inner bearing race and a plurality of balls seated in the inner race, b. telescoping the sidewall of a cup-shaped plastic tire over the outer race until an annular flange formed on the outer race snaps into an annular groove formed in the tire, and c. exerting pressure on the inner portion of the sidewall to deform the inner portion of the sidewall inwardly and form an annular lip which extends inwardly and against the outer race thereby to restrict axial separation of the tire from the outer race.
Claim 10
Independent Claim
110 words
The method of forming an antifriction roller comprising the steps of: a. telescoping an outer bearing race over a generally cylindrical inner bearing race and a plurality of balls seated in the inner race, b. telescoping the sidewall of a cup-shaped plastic tire over the outer race until an annular flange formed on the outer race snaps into an annular groove formed in the tire, and c. exerting pressure on the inner portion of the sidewall to deform the inner portion of the sidewall inwardly and form an annular lip which extends inwardly and against the outer race thereby to restrict axial separation of the tire from the outer race.
Claim 11
Dependent Claim
78 words
The method of claim 7 in which the pressure is exerted on the tire by a die and in which the inner portion of the sidewall is pressed between the die and a portion of the outer surface of the outer race causing the lip to conform to the shape of the portion of the outer surface of the outer race and to be in mating engagement with the portion of the outer surface of the outer race.
Claim 12
Dependent Claim
25 words
The method of claim 7 in which a groove is formed between said lip and said sidewall during deformation of the material of the sidewall.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |