US3707059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pad for disc sanders
Assignee: CA ACQUISITION Co CHICAGO ILL A CORP OF
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Filing: 1970-03-02
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Granted: 1972-12-26
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Expires: 1990-03-02
Abstract
Abstract A sanding pad is made by adhesively joining a flexible, resilient disc and a relatively rigid backup member formed of a polycarbonate resin having mounting threads molded in the hub thereof.
Inventors
- 👤 Alfred H Burtch
- 👤 Halsey W Buell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:26
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/20; B24D13/14; B24D13/147; B24D9/00; B24D9/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
A pad as set forth in claim 1 in which said flange portion flares outwardly toward said disc.
Claim 2
Dependent Claim
20 words
A pad as set forth in claim 1 in which said disc is formed of a cellular, foamed, plastic material.
Claim 3
Dependent Claim
20 words
A pad as set forth in claim 2 in which said disc is formed of a cellular, foamed, plastic material.
Claim 4
Dependent Claim
20 words
A pad as set forth in claim 1 in which said flange, at its periphery, is thinner than said disc.
Claim 5
Dependent Claim
20 words
A pad as set forth in claim 2 in which said flange, at its periphery, is thinner than said disc.
Claim 6
Dependent Claim
61 words
A pad as set forth in claim 1 in which said hub of the backup member is axially elongated and said flange portion of said member flares radially outward toward said disc from an area of said hub removed from said disc, said flange having a flat peripheral area substantially in the same plane as the inner end of said hub.
Claim 7
Dependent Claim
20 words
A pad as set forth in claim 7 in which said disc is formed of a cellular, foamed, plAstic material.
Claim 8
Dependent Claim
83 words
A relatively inflexible backup member molded as an integral unit from polycarbonate resin and adapted for use with a flexible, resilient disc in a pad for abrasive disc sanders comprising: an internally threaded, axially elongated, central hub and a flange portion that extends radially outward from said hub and has a flat peripheral area adapted for adhesive attachment to said resilient disc, said flange portion flaring outwardly from an area of said hub spaced axially from the plane of said flat peripheral area.
Claim 9
Dependent Claim
28 words
A backup member as set forth in claim 9 in which said flat peripheral area and the inner end of said hub are in substantially the same plane.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |