Patent US5420058A successfully refreshed from Google Patents.
US4737673A
Expired / Lapsed
US
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Bearing assembly for an axially compact miniature motor or ventilator
Assignee: Papst Licensing GmbH and Co KG
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Filing: 1986-11-14
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Granted: 1988-04-12
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Expires: 2006-11-14
Abstract
Abstract A bearing assembly for an axially compact miniature motor or ventilator, wherein a sintered friction bearing unit (15) for the motor of a rotary shaft (1) of the drive motor (13) is clamped between a shoulder (6') of a bearing support tube (5) and another shoulder (7) of a closure element (8) cooperating with the bearing support tube (5).
Inventors
- 👤 Gunter Wrobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:42
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/05; F04D29/056; F04D29/057; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D25/0613; F04D25/062
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
92 words
A bearing assembly for an axially compact miniature motor or ventilator, comprising: a central drive motor mounted through a flange (4), a bearing support tube (5), and a rotor bottom (12) secured to the rotor (1) of the drive motor; a friction bearing unit (15) for a shaft (1) of the drive motor (13); and wherein the friction bearing unit (15) is clampingly pressed between a first shoulder (6) of the bearing support tube (5) and a second shoulder (7) of a closure element (8) cooperating with the bearing support tube (5).
Claim 2
Dependent Claim
92 words
A bearing assembly for an axially compact miniature motor or ventilator, comprising: a central drive motor mounted through a flange (4), a bearing support tube (5), and a rotor bottom (12) secured to the rotor (1) of the drive motor; a friction bearing unit (15) for a shaft (1) of the drive motor (13); and wherein the friction bearing unit (15) is clampingly pressed between a first shoulder (6) of the bearing support tube (5) and a second shoulder (7) of a closure element (8) cooperating with the bearing support tube (5).
Claim 3
Dependent Claim
17 words
The bearing assembly according to claim 1, wherein the closure element (8) comprises a bayonet-type closure element.
Claim 4
Dependent Claim
40 words
The bearing assembly according to claim 1, wherein a sleeve (11), formed of plastics material, is provided between the first shoulder (6) and a rim (9) of the friction bearing unit (15), which contacts or abuts the second shoulder (7).
Claim 5
Dependent Claim
33 words
The bearing assembly according to claim 3, wherein a rubber ring means is provided between the first shoulder (6) and the sleeve (11), and between the sleeve (11) and the rim (9), respectively.
Claim 6
Dependent Claim
39 words
The bearing assembly according to claim 1, wherein a sleeve (16), formed of an elastic material, is disposed between the first shoulder (6') and a rim (9) of the friction bearing unit (15), which contacts the second shoulder (7).
Claim 7
Dependent Claim
53 words
The bearing assembly according to claim 1, wherein a further rubber ring (10) and a plastic sleeve (11) are provided between the first shoulder (6') and the rim (9) of the friction bearing unit (15), which rim (9) contacts or abuts the second shoulder (7) with the interposition of a rubber ring (10).
Claim 8
Dependent Claim
23 words
The bearing assembly according to claim 5, wherein the friction bearing unit (15) has a contact surface area reduced by a recess (17).
Claim 9
Dependent Claim
26 words
The bearing assembly according to claim 1 wherein a printed circuit board (19) is connected to the bearing support tube (5) through an insulating piece (19).
Claim 10
Dependent Claim
17 words
The bearing assembly according to claim 1 wherein the friction bearing unit (15) comprises a sintered bearing.
Claim 11
Dependent Claim
14 words
The bearing assembly according to claim 5, wherein the elastic material (16) is rubber.
Claim 12
Dependent Claim
28 words
The bearing assembly according to claim 5, wherein the sleeve (16), formed of the elastic material, is axially clamped between the first shoulder (6') and the rim (9).
Claim 13
Dependent Claim
28 words
The bearing assembly according to claim 5, wherein the first shoulder (6, 6') is formed by an inwardly extending radial thickened portion of the bearing support tube (5).
Claim 14
Dependent Claim
34 words
The bearing assembly according to claim 5, wherein the sleeve (16), formed of the elastic material, extends beyond the end of a thickened portion opposite from the first shoulder (6'), in the axial direction.
Claim 15
Dependent Claim
35 words
The bearing assembly according to claim 5, wherein the sleeve (16), formed of the elastic material, extends up to the end of the thickened portion opposite from the first shoulder (6'), in the axial direction.
Claim 16
Dependent Claim
33 words
The bearing assembly according to claim 5 wherein the sleeve (16), formed of the elastic material, is provided in the radial direction between the bearing support tube (5) and the friction bearing unit.
Claim 17
Dependent Claim
41 words
The bearing assembly according to claim 2, wherein a sleeve (11), formed preferably of plastics material, is provided between the first shoulder (6) and a rim (9) of the friction bearing unit (15), which contacts or abuts the second shoulder (7).
Claim 18
Dependent Claim
17 words
The bearing assembly according to claim 2, wherein the friction bearing unit (15) comprises a sintered bearing.
Claim 19
Dependent Claim
17 words
The bearing assembly according to claim 3, wherein the friction bearing unit (15) comprises a sintered bearing.
Claim 20
Dependent Claim
17 words
The bearing assembly according to claim 4, wherein the friction bearing unit (15) comprises a sintered bearing.
Claim 21
Dependent Claim
17 words
The bearing assembly according to claim 5, wherein the friction bearing unit (15) comprises a sintered bearing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |