US3826045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrading machine with dust collecting unit
Assignee: NAT DETROIT Inc
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Filing: 1973-09-14
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Granted: 1974-07-30
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Expires: 1993-09-14
Abstract
Abstract A vacuum unit removes abrading dust through a suction line communicating with a dust confining shroud which overlies and extends around the abrading pad of the machine. The shroud is telescoped rotatably over the motor unit of the machine and is suspended from the suction line which, in turn, is pivotally supported on top of the motor unit and is adapted to be turned relative to the handle of the machine to enable maneuvering of the machine without interference from the suction line.
Inventors
- 👤 R Champayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:25
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/06; B24B55/10; B24B55/102
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
An abrading machine cOmprising a motor unit having a rotary drive shaft at its lower end and having a handle projecting outwardly from one of its sides, a generally circular abrading pad connected to be driven by said shaft, a dust collecting shroud telescoped rotatably over said motor unit, said shroud having a top wall overlying the upper side of said pad and having a depending skirt extending around the outer periphery of said pad, a suction line having a generally vertical portion communicating with the interior of said shroud through said top wall and having a generally horizontal portion overlying the top of said motor unit, and means connecting said horizontal portion to the top of said motor unit for pivoting about a generally vertical axis thereby to support said shroud on said motor unit while enabling turning of said suction line and said shroud relative to said motor unit and said handle.
Claim 2
Dependent Claim
154 words
An abrading machine cOmprising a motor unit having a rotary drive shaft at its lower end and having a handle projecting outwardly from one of its sides, a generally circular abrading pad connected to be driven by said shaft, a dust collecting shroud telescoped rotatably over said motor unit, said shroud having a top wall overlying the upper side of said pad and having a depending skirt extending around the outer periphery of said pad, a suction line having a generally vertical portion communicating with the interior of said shroud through said top wall and having a generally horizontal portion overlying the top of said motor unit, and means connecting said horizontal portion to the top of said motor unit for pivoting about a generally vertical axis thereby to support said shroud on said motor unit while enabling turning of said suction line and said shroud relative to said motor unit and said handle.
Claim 3
Dependent Claim
55 words
A sanding machine as defined in claim 1 in which said suction line includes a second generally vertical portion communicating with said horizontal portion and communicating with the interior of said shroud through said top wall, the first and second vertical portions of said suction line being spaced diametrically from one another around said shroud.
Claim 4
Dependent Claim
58 words
A sanding machine as defined in claim 1 in which an opening is formed in part of said top wall and said skirt to expose part of the periphery of said sanding pad, said opening turning to different angular positions relative to said handle when said suction line and said shroud are turned relative to said motor unit.
Claim 5
Dependent Claim
34 words
A sanding machine as defined in claim 1 in which the vertically extending portion of said suction line includes a vertically flexible section to enable vertical rocking of said shroud relative to said pad.
Claim 6
Dependent Claim
51 words
A sanding machine as defined in claim 1 in which an upwardly opening hole is formed in the top of said motor unit, said means comprising a pivot connection anchored to and depending from the horizontal portion of said suction line and releasably telescoped into said hole with a snap fit.
Claim 7
Dependent Claim
31 words
A sanding machine as defined in claim 1 in which said means also support said suction line and said shroud on said motor unit for rocking about a generally horizontal axis.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |