US5124997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbo blower for a laser device and a laser oscillator device
Assignee: Fanuc Corp
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Filing: 1990-02-09
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Granted: 1992-06-23
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Expires: 2010-02-09
Abstract
Abstract A turbo blower for a laser device, including a shaft having an impeller on one end thereof, a pair of bearings, having inside grease spaces and supporting the shaft Non-contact seal portions are provided for preventing an outflow of grease, whereby other spaces for retaining the grease are formed on either side of the bearings. Although the grease in the inside spaces of the bearings is urged to escape from the bearings by the centrifugal force of the rotation of the shaft, the grease is prevented from flowing out of the spaces on either side of the bearing by the non-contact seal portions.
Inventors
- 👤 Tsutomu Funakubo
- 👤 Norio Karube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:08
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/05; F04D29/056; F04D29/059; F04D29/06; F04D29/063; F16; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6603; F16C33/6607; H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/036; F16C2360/00; F16C2360/44; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
86 words
A turbo blower for a leer device, comprising: a shaft having an impeller on one end thereof; bearings supporting said shaft, each of said bearings including first spaces for receiving lubricant; a motor mounted in said blower adjacent and connected to said shaft for rotating said shaft; second spaces for retaining lubricant formed on either side of said bearings non-contact seal portions provided for preventing said lubricant from flowing out of said second spaces; and said first spaces and second spaces being filled with said lubricant.
Claim 2
Dependent Claim
86 words
A turbo blower for a leer device, comprising: a shaft having an impeller on one end thereof; bearings supporting said shaft, each of said bearings including first spaces for receiving lubricant; a motor mounted in said blower adjacent and connected to said shaft for rotating said shaft; second spaces for retaining lubricant formed on either side of said bearings non-contact seal portions provided for preventing said lubricant from flowing out of said second spaces; and said first spaces and second spaces being filled with said lubricant.
Claim 3
Dependent Claim
27 words
A turbo blower for a laser device according to claim 1, wherein the direction of the axis of rotation of said shaft is parallel to the ground.
Claim 4
Dependent Claim
30 words
A turbo blower for a laser device according to claim 1, wherein said shaft is provided with two impellers so that a reverse thrust load is applied to the shaft.
Claim 5
Dependent Claim
21 words
A turbo blower for a laser device according to claim 1, wherein said bearings are provided with an oil film damper.
Claim 6
Dependent Claim
17 words
A turbo blower for a laser device according to claim 1, wherein said bearings are ball bearings.
Claim 7
Dependent Claim
17 words
A turbo blower for a laser device according to claim 1, wherein said bearings are roller bearings.
Claim 8
Dependent Claim
17 words
A turbo blower for a laser device according to claim 1, wherein said bearings are ceramic bearings.
Claim 9
Dependent Claim
123 words
A laser oscillator device, comprising: a discharge tube for effecting laser excitation by a gas discharge; an optical resonator for laser oscillation; a gas circulating device for forced cooling of a laser gas by a turbo blower and a cooling unit; said turbo blower including: a shaft having an impeller on one end thereof; bearings supporting said shaft, each of said bearings including first spaces for receiving lubricant; a motor mounted in said blower adjacent and connected to said shaft for rotating said shaft; second spaces for retaining lubricant formed on either side of said bearings, non-contact seal portions provided for preventing said lubricant from flowing out of said second spaces; and said first spaces and second spaces being filled with said lubricant.
Claim 10
Dependent Claim
123 words
A laser oscillator device, comprising: a discharge tube for effecting laser excitation by a gas discharge; an optical resonator for laser oscillation; a gas circulating device for forced cooling of a laser gas by a turbo blower and a cooling unit; said turbo blower including: a shaft having an impeller on one end thereof; bearings supporting said shaft, each of said bearings including first spaces for receiving lubricant; a motor mounted in said blower adjacent and connected to said shaft for rotating said shaft; second spaces for retaining lubricant formed on either side of said bearings, non-contact seal portions provided for preventing said lubricant from flowing out of said second spaces; and said first spaces and second spaces being filled with said lubricant.
Claim 11
Dependent Claim
19 words
A laser oscillator device according to claim 8, wherein said laser excitation is caused by a high-frequency gas discharge.
Claim 12
Dependent Claim
22 words
The oscillator according to claim 8, wherein the direction of the axis of rotation of said shaft is parallel to the ground.
Claim 13
Dependent Claim
25 words
The oscillator according to claim 8, wherein said shaft is provided with two impellers so that a reverse thrust load is applied to the shaft.
Claim 14
Dependent Claim
16 words
The oscillator according to claim 8, wherein said bearings are provided with an oil film damper.
Claim 15
Dependent Claim
12 words
The oscillator according to claim 8, wherein said bearings are ball bearings.
Claim 16
Dependent Claim
12 words
The oscillator according to claim 8, wherein said bearings are roller bearings.
Claim 17
Dependent Claim
12 words
The oscillator according to claim 8, wherein said bearings are ceramic bearings.
Claim 18
Dependent Claim
32 words
A turbo blower for a leer device according to claim 1, wherein the impeller is selected from the group comprising a centrifugal impeller, a mixed flow impeller and an axial flow impeller.
Claim 19
Dependent Claim
28 words
A laser oscillator according to claim 8, wherein the impeller is selected from the group comprising a centrifugal impeller, a mixed flow impeller and an axial flow impeller
Claim 20
Dependent Claim
17 words
A turbo blower for a leer device according to claim 1, wherein said bearings are rolling-contact bearings.
Claim 21
Dependent Claim
13 words
A laser oscillator according to claim 8, wherein said bearings are rolling-contact bearings.
Claim 22
Dependent Claim
19 words
A turbo blower for a laser device according to claim 1, wherein said non-contact seal portions are labyrinth seals.
Claim 23
Dependent Claim
15 words
A laser oscillator according to claim 8, wherein the non-contact seal portions are labyrinth seals.
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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |