US4490881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust exhaustor
Assignee: Individual
•
Filing: 1983-02-23
•
Granted: 1985-01-01
•
Expires: 2003-02-23
Abstract
Abstract There is described a dust exhaustor for a precision-mechanics work table which can be fitted as a ready-to-connect unit beneath the work top of a conventional work table. For this purpose, the housing is L-shaped, the suction opening being in the front end of the substantially horizontal leg of the housing and the large-surface outlet(s) being in the vertical leg of the housing. The housing bounds, in its installed position, the foot or knee region for the user of the work area.
Inventors
- 👤 Otto Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
B; B08; B08B; B08B15/00; B08B15/02; A; A61; A61C; A61C19/00; A61C19/007; B25; B25H; B25H1/00; B25H1/20; F; F24; F24F; F24F3/00; F24F3/12; F24F3/16; F24F3/163; A47; A47B; A47B2200/00; A47B2200/06; Y; Y10; Y10S; Y10S55/00; Y10S55/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
214 words
A dust exhaustor for a precision-mechanics work table, comprising a slowly running low-pressure blower which, at the suction side, communicates with a large-surface suction opening through a suction channel and, at the pressure side, feeds the sucked-in air to at least one large-surface outlet through an outlet channel, characterized in that it is designed as a ready-to-connect unit which can be fitted as a whole beneath the work top (2) of conventional work tables and for this purpose, has a substantially L-shaped housing (3), in which all the devices and assemblies which are required for the operation of the exhaustor (1) are combined, the housing (3) comprising: (a) a leg (3a) which, in the installed position, is substantially horizontal and at the front end of which that is directed towards the user there is provided the suction opening (9), (b) a leg (3b) which in the installed position is substantially vertical and at the external surface of which there is provided at least one outlet, filter means in at least one of said legs for removing dust from the air flowing therethrough, and (c) a suction channel enclosed by said horizontal housing leg (3a), said suction channel having an inlet zone (6a), which extends towards the user side obliquely to the front and top.
Claim 2
Dependent Claim
214 words
A dust exhaustor for a precision-mechanics work table, comprising a slowly running low-pressure blower which, at the suction side, communicates with a large-surface suction opening through a suction channel and, at the pressure side, feeds the sucked-in air to at least one large-surface outlet through an outlet channel, characterized in that it is designed as a ready-to-connect unit which can be fitted as a whole beneath the work top (2) of conventional work tables and for this purpose, has a substantially L-shaped housing (3), in which all the devices and assemblies which are required for the operation of the exhaustor (1) are combined, the housing (3) comprising: (a) a leg (3a) which, in the installed position, is substantially horizontal and at the front end of which that is directed towards the user there is provided the suction opening (9), (b) a leg (3b) which in the installed position is substantially vertical and at the external surface of which there is provided at least one outlet, filter means in at least one of said legs for removing dust from the air flowing therethrough, and (c) a suction channel enclosed by said horizontal housing leg (3a), said suction channel having an inlet zone (6a), which extends towards the user side obliquely to the front and top.
Claim 3
Dependent Claim
47 words
A dust exhaustor as claimed in claim 1, characterised in that the vertical housing leg (3b) is subdivided by a partition wall (14) into an upper zone, in which the low-pressure blower (11, 12) is arranged, and a lower zone, in which the outlet channel (15) extends.
Claim 4
Dependent Claim
30 words
A dust exhaustor as claimed in claim 2, characterised in that all the lateral surfaces of the lower zone of the vertical housing leg (3b) are provided with outlets (16).
Claim 5
Dependent Claim
25 words
A dust exhaustor as set forth in claim 1 wherein the lower face of the vertical housing leg (3b) is provided with an outlet (16).
Claim 6
Dependent Claim
25 words
A dust exhaustor as set forth in claim 2 wherein the lower face of the vertical housing leg (3b) is provided with an outlet (16).
Claim 7
Dependent Claim
25 words
A dust exhaustor as set forth in claim 3 wherein the lower face of the vertical housing leg (3b) is provided with an outlet (16).
References Cited (Backward Citations)
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US3828530A
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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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |