US3743369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cage for a rolling bearing
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1971-09-08
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Granted: 1973-07-03
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Expires: 1991-09-08
Abstract
Abstract Cages of synthetic resin for rolling bearings, especially bearings operating at high speeds, comprises an annulus provided with a number of pockets at its internal surface. An axially directed ridge is arranged between any two pockets integral with the annulus and the collars defining said pockets to form a reinforcing framework, which will include two chambers for a lubricant adjacent to each pocket.
Inventors
- 👤 H Langstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:23
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7893; F16C33/30; F16C33/38; F16C33/3837; F16C33/3843; F16C33/3856; F16C33/3862; F16C33/3875; F16C33/66; F16C33/6637; F16C33/664; F16C33/6651; F16C33/6659; F16C33/6674; F16C33/6681; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2226/00; F16C2226/30; F16C2226/36; F16C2226/38
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
141 words
An improved cage of synthetic resin for the rolling bodies of a rolling bearing, especially the balls of a deep groove ball bearing, said cage having an annulus of constant breadth, and a number of pockets, each pocket being adapted to retain one of said rolling bodies and being defined by a collar provided at the inner surface of said annulus and extending inwardly therefrom, wherein the improvement comprises an axial ridge provided at the inner surface of said annulus and between any two adjacent collars, said ridge being integral with said two collars as well as with the annulus and having a height substantially equal to that of collars, said annulus, collars and ridges together forming a reinforcing framework as well as two chambers for the reception of a lubricant, located at and substantially enclosing each of said rolling bodies.
Claim 2
Dependent Claim
141 words
An improved cage of synthetic resin for the rolling bodies of a rolling bearing, especially the balls of a deep groove ball bearing, said cage having an annulus of constant breadth, and a number of pockets, each pocket being adapted to retain one of said rolling bodies and being defined by a collar provided at the inner surface of said annulus and extending inwardly therefrom, wherein the improvement comprises an axial ridge provided at the inner surface of said annulus and between any two adjacent collars, said ridge being integral with said two collars as well as with the annulus and having a height substantially equal to that of collars, said annulus, collars and ridges together forming a reinforcing framework as well as two chambers for the reception of a lubricant, located at and substantially enclosing each of said rolling bodies.
Claim 3
Dependent Claim
111 words
A cage assembly for a rolling bearing having at least an outer ring and a plurality of rolling elements, the cage comprising a circumferentially extending annulus, a plurality of collars depending from the annulus and defining circumferentially spaced separated pockets for lack of the rolling elements, and means defining at least one lubricant chamber for each of the rolling elements adjacent each pocket, each of said chambers opening radially and having at least one opening to provide fluid communication between said lubricant chamber and pocket whereby upon operation of the bearing, lubricant is metered through each said opening which is remote from the open end of each chamber adjacent said annulus.
Claim 4
Dependent Claim
111 words
A cage assembly for a rolling bearing having at least an outer ring and a plurality of rolling elements, the cage comprising a circumferentially extending annulus, a plurality of collars depending from the annulus and defining circumferentially spaced separated pockets for lack of the rolling elements, and means defining at least one lubricant chamber for each of the rolling elements adjacent each pocket, each of said chambers opening radially and having at least one opening to provide fluid communication between said lubricant chamber and pocket whereby upon operation of the bearing, lubricant is metered through each said opening which is remote from the open end of each chamber adjacent said annulus.
Claim 5
Dependent Claim
19 words
A cage as claimed in claim 2 including a lubricant chamber on each side of each of said pockets.
Claim 6
Dependent Claim
18 words
A cage as claimed in claim 2 further comprising external side walls extending radially inwardly from the annulus.
Claim 7
Dependent Claim
19 words
A cage as claimed in claim 4 wherein the side walls are integral with the framework of the cage.
Claim 8
Dependent Claim
18 words
A cage as claimed in claim 2 wherein the side walls are separate members attached to said annulus.
Claim 9
Dependent Claim
89 words
A cage as claimed in claim 1 comprising two prefabricated annular, identical half-portions, each including one half of the annUlus, one half of each collar and one half of each ridge, joined by ultra-sonic welding along the ridge portion end faces confronting each other, said end faces being alternately provided with spigots and recesses, the recesses being of less depth than the height of the spigots but having a greater cross sectional area, whereby during the welding operation the material of the spigots will melt and fill the recesses.
Claim 10
Dependent Claim
16 words
A cage as claimed in claim 1 wherein the frame-work is produced as a single element.
Claim 11
Dependent Claim
32 words
A cage as claimed in claim 1 wherein the breadth of the ridges decreases from the portion thereof joined to the collars in the direction towards the outer edges of the annulus.
Claim 12
Dependent Claim
18 words
A cage as claimed in claim 1 wherein the ridges have a constant breadth along their full length.
Claim 13
Dependent Claim
34 words
A cage as claimed in claim 2 including ridges extending axially out to the edges of the annulus, and side walls having an external diameter at least as great as that of the annulus.
Claim 14
Dependent Claim
45 words
A cage as claimed in claim 1 including side walls and wherein the ridges in the axial direction terminate just inside the edges of the annulus, by a distance corresponding to the thickness of the side walls, said side walls being fitted within the annulus.
Claim 15
Dependent Claim
48 words
A cage as claimed in claim 1 for a rolling bearing having an outer race ring, wherein said framework has at least one passage for feeding lubricant from each chamber to the rolling body enclosed between each pair of chambers as well as to the outer race ring.
Claim 16
Dependent Claim
43 words
A cage as claimed in claim 11 wherein the frame-work is centered with respect to the rolling bodies carried therein by means of at least one pair of projections arranged diametrically opposite to each other at the radially innermost portions of each collar.
Claim 17
Dependent Claim
28 words
A cage as claimed in claim 14 wherein the thickness of the collar decreases in the direction away from the annulus, showing the thinnest section at the projections.
Claim 18
Dependent Claim
21 words
A cage as claimed in claim 14 wherein the thickness of the collars decreases in the peripheral direction towards the porjections.
Claim 19
Dependent Claim
29 words
A cage as claimed in claim 1 for a rolling bearing having an outer race ring wherein the annulus is adapted to be centered by the outer race ring.
Claim 20
Dependent Claim
25 words
A cage as claimed in claim 12 wherein the side walls are attached to the framework in a face-to-face relationship by means of spigot-and-recess connections.
Claim 21
Dependent Claim
25 words
A cage as claimed in claim 18 wherein the side walls are formed of synthetic resin and are bonded to the framework by ultrasonic welding.
Claim 22
Dependent Claim
32 words
A cage as claimed in claim 2 for a folling bearing having two race rings, wherein said side walls include sealing members adapted to engage at least one of the race rings.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |