US4976002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube particle vacuum cleaner
Assignee: Intel Corp
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Filing: 1988-12-02
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Granted: 1990-12-11
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Expires: 2008-12-02
Abstract
Abstract The present invention overcomes the aforementioned difficulties by providing a vacuum device to clean the interior surface of particle tubes used in the manufacture of semiconductor wafers. The vacuum device consists of a head which is designed to closely fit with the interior surface of the particle tube to be cleaned. Guide wheels are provided to align the head with the particle tube and to allow the vacuum device to easily roll in and out of the particle tube. The wheels are made of material which does not scratch the interior surface of the particle tube. The head is attached to vacuum tubing by means of flexible bellows. The vacuum tubing and head may be rotated to allow the head to clean the entire interior surface of the particle tube.
Inventors
- 👤 Mark Leonov
- 👤 Roy de Groot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0402; H10P72/0406; A; A47; A47L; A47L9/00; A47L9/02; B; B08; B08B; B08B5/00; B08B5/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
66 words
A vacuum device, comprising: A vacuum head; an alignment means connected to said head for placing said head in a predetermined position with respect to a surface to be cleaned; a vacuum tube flexibly connected to said head; a mounting means for supporting said tube on an external stand; a coupling means connected to said mounting means for rotatably connecting said tube to said mounting means.
Claim 2
Dependent Claim
66 words
A vacuum device, comprising: A vacuum head; an alignment means connected to said head for placing said head in a predetermined position with respect to a surface to be cleaned; a vacuum tube flexibly connected to said head; a mounting means for supporting said tube on an external stand; a coupling means connected to said mounting means for rotatably connecting said tube to said mounting means.
Claim 3
Dependent Claim
28 words
The device of claim 1, wherein said vacuum head has a first side, a second side, a peripheral edge and a vacuum slot disposed in said peripheral edge.
Claim 4
Dependent Claim
21 words
The device of claim 2 wherein said alignment means includes a slanted portion on said first side of said vacuum head.
Claim 5
Dependent Claim
30 words
The device of claim 2 which said alignment means comprises at least one guide wheel connected to said head and at least one positioning wheel connected to said peripheral edge.
Claim 6
Dependent Claim
29 words
The device of claim 4 wherein said guide wheels and said positioning wheels are made from non-abrasive material chosen such that it will not scratch said surface being cleaned.
Claim 7
Dependent Claim
20 words
The device of claim 4 wherein said vacuum head is coupled to said vacuum tube by means of flexible bellows.
Claim 8
Dependent Claim
196 words
A vacuum device for cleaning the interior surface of tubes used in the manufacture of semiconductor devices, comprising: a vacuum head having a shape which substantially conforms to a shape of the inner surface of said tube; at least one guide wheel attached to said vacuum head, said guide wheel being spring mounted; at least one positioning wheel mounted in a peripheral edge of said vacuum head, said guide wheel and said positioning wheel being constructed and arranged so as to hold said vacuum head at a predetermined distance way from said tube; a first vacuum tubing having first and second ends, said first end of said first vacuum tubing being flexibly coupled to said vacuum head; a second vacuum tubing having first and second ends, said first end of said second vacuum tubing being removably coupled to said second end of said first vacuum tubing; a rotatable vacuum coupling connected to said second end of said second vacuum tubing; at least one mounting means coupled to said second vacuum tubing and said rotatable vacuum coupling; a vacuum attachment means connected to said rotatable vacuum coupling for connecting said vacuum device to an external vacuum source.
Claim 9
Dependent Claim
196 words
A vacuum device for cleaning the interior surface of tubes used in the manufacture of semiconductor devices, comprising: a vacuum head having a shape which substantially conforms to a shape of the inner surface of said tube; at least one guide wheel attached to said vacuum head, said guide wheel being spring mounted; at least one positioning wheel mounted in a peripheral edge of said vacuum head, said guide wheel and said positioning wheel being constructed and arranged so as to hold said vacuum head at a predetermined distance way from said tube; a first vacuum tubing having first and second ends, said first end of said first vacuum tubing being flexibly coupled to said vacuum head; a second vacuum tubing having first and second ends, said first end of said second vacuum tubing being removably coupled to said second end of said first vacuum tubing; a rotatable vacuum coupling connected to said second end of said second vacuum tubing; at least one mounting means coupled to said second vacuum tubing and said rotatable vacuum coupling; a vacuum attachment means connected to said rotatable vacuum coupling for connecting said vacuum device to an external vacuum source.
Claim 10
Dependent Claim
17 words
The device of claim 7 wherein said vacuum head is in the shape of a half circle.
Claim 11
Dependent Claim
19 words
The device of claim 7 wherein said vacuum head is connected to said first vacuum tubing by flexible bellows.
Claim 12
Dependent Claim
24 words
The device of claim 7 wherein said positioning wheels and said guide wheels are made from a material which will not scratch said tube.
Claim 13
Dependent Claim
10 words
The device of claim 10 wherein said material is Vespel.
Claim 14
Dependent Claim
20 words
The device of claim 7 wherein said first and second vacuum tubings are coupled together by a quick release nut.
Claim 15
Dependent Claim
21 words
The device of claim 7 further comprising a mechanical stop for limiting the travel of said vacuum head within said tube.
Claim 16
Dependent Claim
35 words
The device of claim 7 wherein said vacuum head has formed therein a vacuum slot, and said area of said vacuum slot is a fixed predetermined multiple of an interior cross-sectional area of said tubing.
Claim 17
Dependent Claim
10 words
The device of claim 14 wherein said multiple is 1.2.
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |