Patent US3608987A successfully refreshed from Google Patents.
US3608987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for conveyer roller bearing
Assignee: ELECTRIC AND MACHINE CO
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Filing: 1969-10-09
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Granted: 1971-09-28
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Expires: 1989-10-09
Abstract
Abstract A seal incorporated in an antifriction-bearing unit of the type used in mounting conveyor belt supporting or similar rollers. It comprises a one-piece seal in the form of an annular collar, preferably of nylon, which rotates with the roller and relative to the roller axle hub or bearing retainer. The seal collar is of such a cross section that it provides three relatively spaced annular sealing and bearing surfaces which effectively contact with adjacent fixed surfaces to seal lubricant in the bearing unit and to prevent the entry of dust into the bearing unit.
Inventors
- 👤 Kenneth K Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:08
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; B; B65; B65G; B65G39/00; B65G39/02; B65G39/09; F16C13/00; F16C13/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
In a roller assembly which includes a cylindrical roller having an end cup formed with a plurality of axially inwardly adjoining cylindrical recesses of progressively diminishing diameters, an axle extending coaxially through said roller and end cup, an antifriction bearing having an outer race carried within a smaller diameter recess of said end cup and supporting said roller for axial rotation on said axle, and a generally cylindrical dust cap having an axially extending hub portion secured to said axle in aXially outwardly spaced relation to said bearing and having a relatively larger diameter flange portion disposed in closing relation to the recesses of said end cup; that improvement which comprises an annular seal member fitted in the recesses of said end cup between the flange portion of said dust cap and said bearing, said seal member being formed with an inner collar portion having a sealing surface rotatively engaging the hub portion of said cap, an axially projecting annular skirt portion extending into the smaller diameter recess of said cup and engaging the outer race of said bearing, an intermediate annular rib having a flat sealing surface disposed in rotative contact with the flange of said cap, and an outer rim portion positioned in a larger diameter recess of said end cup and having a flat sealing surface disposed in rotative contact with the flange of said cap adjacent the periphery thereof.
Claim 2
Dependent Claim
233 words
In a roller assembly which includes a cylindrical roller having an end cup formed with a plurality of axially inwardly adjoining cylindrical recesses of progressively diminishing diameters, an axle extending coaxially through said roller and end cup, an antifriction bearing having an outer race carried within a smaller diameter recess of said end cup and supporting said roller for axial rotation on said axle, and a generally cylindrical dust cap having an axially extending hub portion secured to said axle in aXially outwardly spaced relation to said bearing and having a relatively larger diameter flange portion disposed in closing relation to the recesses of said end cup; that improvement which comprises an annular seal member fitted in the recesses of said end cup between the flange portion of said dust cap and said bearing, said seal member being formed with an inner collar portion having a sealing surface rotatively engaging the hub portion of said cap, an axially projecting annular skirt portion extending into the smaller diameter recess of said cup and engaging the outer race of said bearing, an intermediate annular rib having a flat sealing surface disposed in rotative contact with the flange of said cap, and an outer rim portion positioned in a larger diameter recess of said end cup and having a flat sealing surface disposed in rotative contact with the flange of said cap adjacent the periphery thereof.
Claim 3
Dependent Claim
24 words
The assembly as defined in claim 1, wherein said seal member is composed of a substantially incompressible plastic material and is of one-piece form.
Claim 4
Dependent Claim
16 words
The assembly as defined in claim 2, wherein said plastic material is a polyamide (Nylon) resin.
Claim 5
Dependent Claim
54 words
The assembly as defined in claim 1, wherein the flat sealing surface of the outer rim portion of said seal member resiliently engages the flange of said cap and a clearance is provided between said rim portion and said end cup to permit limited axial movement of said rim portion within said end cup.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |