US3610387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller for roller conveyors
Assignee: HANS VOM STEIN oHG
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Filing: 1969-02-20
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Granted: 1971-10-05
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Expires: 1989-02-20
Abstract
Abstract An idler roller for use in roller conveyors comprises a shaft which is nonrotatably installed in the frame of the conveyor, a hollow cylindrical shell coaxial with the shaft, and two annular mounting units each installed in one end of the shell and each provided with an antifriction bearing to facilitate rotation of the shell about the axis of the shaft. Each mounting unit further comprises a labyrinth seal which prevents entry of foreign matter into the respective bearing. The mounting units are assembled of several separably connected parts at least some of which consist of elastic synthetic plastic material.
Inventors
- 👤 Hans Vom Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:34
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/09; F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C33/00; F16C33/30; F16C33/58; F16C33/583; F16C33/72; F16C33/76; F16C33/767; F16C33/80; F16C2326/00; F16C2326/58
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
A roller for use in roller conveyors or the like comprising a hollow shell having a substantially cylindrical external surface; a pair of mounting units each received in one end of said shell and each comprising annular end wall means secured to the respective end of said shell, ball bearings accommodated in the respective end wall means, and labyrinth seal means at least a portion of which is carried by said end wall means, each of said ball bearings comprises an outer race mounted in said end wall means, an inner race, balls between said races, one of said races having resilient tongues engaging the other race; snap action elements on each of said means for securing such means to each other by snap action so that each mounting unit is insertable as a complete unit into said shell; and a shaft coaxial with and extending through said shell and the ball bearing of each unit.
Claim 2
Dependent Claim
156 words
A roller for use in roller conveyors or the like comprising a hollow shell having a substantially cylindrical external surface; a pair of mounting units each received in one end of said shell and each comprising annular end wall means secured to the respective end of said shell, ball bearings accommodated in the respective end wall means, and labyrinth seal means at least a portion of which is carried by said end wall means, each of said ball bearings comprises an outer race mounted in said end wall means, an inner race, balls between said races, one of said races having resilient tongues engaging the other race; snap action elements on each of said means for securing such means to each other by snap action so that each mounting unit is insertable as a complete unit into said shell; and a shaft coaxial with and extending through said shell and the ball bearing of each unit.
Claim 3
Dependent Claim
28 words
A roller as defined in claim 1, wherein said portion of each labyrinth seal comprises an annular cap which is removably received in the respective end wall means.
Claim 4
Dependent Claim
59 words
A roller as defined in claim 2, wherein each of said end wall means has an outer end face provided with an annular recess for the respective cap, and wherein said snap action elements coMprise complementary claws provided on said caps and said end wall means and engaging each other to releasably hold the caps in the respective recesses.
Claim 5
Dependent Claim
35 words
A roller as defined in claim 1, wherein each of said ball bearings comprises a sleeve directly surrounding said shaft, and wherein a second portion of said labyrinth seal means is integral with said sleeve.
Claim 6
Dependent Claim
39 words
A roller as defined in claim 1, wherein said shell has an internal surface provided with an annular recess at each end thereof and wherein each of said end walls comprises a circumferential bead received in the respective recess.
Claim 7
Dependent Claim
48 words
A roller as defined in claim 1, wherein at least one axial end of said shaft is provided with a blind bore and further comprising a plunger reciprocably received in said bore, means for limiting the axial movement of said plunger, and means for biasing said plunger outwardly.
Claim 8
Dependent Claim
21 words
A roller as defined in claim 3, wherein at least a portion of each of said caps consists of elastomeric material.
References Cited (Backward Citations)
US1366966A
Cited
US1943998A
Cited
US1919495A
Cited
US2757988A
Cited
FR1208000A
Cited
AT254043B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |