US4184291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum hand sanding device
Assignee: Individual
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Filing: 1977-09-27
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Granted: 1980-01-22
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Expires: 1997-09-27
Abstract
Abstract A vacuum hand sanding device consists of a back-up pad with sanding disc attached thereto detachably secured to a vacuum housing and vacuum source. The back-up pad has a plurality of apertures in the surface thereof and channels therein between the apertures and the housing. In one embodiment, a relief valve is provided on the housing and which can be covered by an operator's hand. In another embodiment, the relief valve is situated on a tubular handle connecting the back-up pad to the vacuum source. Means may be provided for adjustably altering the angle between the pad and the tubular handle.
Inventors
- 👤 Miksa Marton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:24
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/06; B24D; B24D15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A vacuum hand sanding device comprising a back-up pad with apertures in the operative surface thereof and adapted to receive an apertured, abrasive sanding disc on said operative surface with the apertures in the disc being in registry with the apertures in the pad; and means for connecting said back-up pad with a vacuum source comprising a housing mounted on the top of the back-up pad with a tubular member on the side of the housing for connection to a vacuum source and with a relief valve positioned on the upper surface of the housing and operable by the hand of an operator during use of the sander and comprising an aperture in said upper surface of the housing for progressive and selective closing by the hand of an operator and including a pivotally mounted door over said aperture for selecting the amount of relief from said vacuum; said housing being smaller in area than said back-up pad and of a size so as to be operable by one hand.
Claim 2
Dependent Claim
170 words
A vacuum hand sanding device comprising a back-up pad with apertures in the operative surface thereof and adapted to receive an apertured, abrasive sanding disc on said operative surface with the apertures in the disc being in registry with the apertures in the pad; and means for connecting said back-up pad with a vacuum source comprising a housing mounted on the top of the back-up pad with a tubular member on the side of the housing for connection to a vacuum source and with a relief valve positioned on the upper surface of the housing and operable by the hand of an operator during use of the sander and comprising an aperture in said upper surface of the housing for progressive and selective closing by the hand of an operator and including a pivotally mounted door over said aperture for selecting the amount of relief from said vacuum; said housing being smaller in area than said back-up pad and of a size so as to be operable by one hand.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |