Patent US3569749A successfully refreshed from Google Patents.
Patent US3754359A successfully refreshed from Google Patents.
US3754359A
Expired / Lapsed
US
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Abrasion tools
Assignee: SPAM D AVRAY
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Filing: 1971-09-14
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Granted: 1973-08-28
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Expires: 1991-09-14
Abstract
Abstract An abrasion tool consists in the combination of a perforated flexible disk covered with an abrasive/adhesive complex and of a generally annular support plate provided with a central hub portion and with a plurality of radially extending channels communicating with the perforations of the disk, whereby centrifugal action causes air to flow and cool the work and the tool, and to remove the dust produced by abrasion.
Inventors
- 👤 L Scandaletos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:51
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/08; B24D13/00; B24D13/14; B24D13/18; B24D7/00; B24D7/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
220 words
A rotary abrasive tool comprising interchangeable disk means having an abrasive material working face for performing a work function and annular plate means for detachably supporting said disk means, said plate means comprising a centrally disposed hub portion adapted for rotational movement about the hub axis and an annular wall portion radiating outwardly of said hub portion for rotation therewith, said disk means being substantially coextensive with said annular wall portion and being operatively supported in relation to the hub portion spaced from said annular wall portion of said plate means to define a chamber therebetween, an annular array of substantially uniformly distributed generally radially directed spaced apart wall divider means in said chamber and positioned therein to define a plurality of generally radially directed channels, said disk means being formed with a plurality of radial arrays of openings therethrough, at least one array for each channel, each array containing a plurality of openings, at least one radial array of openings respectively communicating with one of said plurality of channels, and air flow constraining means operatively related to said disk means and to said plate means for constraining air flow from the atmosphere first through said channels and then through said openings for discharge therefrom between the working face of the disk means and a work piece being worked upon.
Claim 2
Dependent Claim
220 words
A rotary abrasive tool comprising interchangeable disk means having an abrasive material working face for performing a work function and annular plate means for detachably supporting said disk means, said plate means comprising a centrally disposed hub portion adapted for rotational movement about the hub axis and an annular wall portion radiating outwardly of said hub portion for rotation therewith, said disk means being substantially coextensive with said annular wall portion and being operatively supported in relation to the hub portion spaced from said annular wall portion of said plate means to define a chamber therebetween, an annular array of substantially uniformly distributed generally radially directed spaced apart wall divider means in said chamber and positioned therein to define a plurality of generally radially directed channels, said disk means being formed with a plurality of radial arrays of openings therethrough, at least one array for each channel, each array containing a plurality of openings, at least one radial array of openings respectively communicating with one of said plurality of channels, and air flow constraining means operatively related to said disk means and to said plate means for constraining air flow from the atmosphere first through said channels and then through said openings for discharge therefrom between the working face of the disk means and a work piece being worked upon.
Claim 3
Dependent Claim
85 words
A tool according to claim 1, wherein said hub portion carries an annular planar bearing surface formed with a plurality of openings therethrough, the face of said disk means opposite its working face being in abutting relation with one face of said annular bearing surface and with the openings in the bearing surface in alignment with the openings in the disk means, the opposite face of the bearing surface together with said annular wall portion and adjoining of said wall divider means defining said channels.
Claim 4
Dependent Claim
66 words
A tool according to claim 1 wherein said air flow constraining means comprises a peripheral flange at the radial outer end of said annular wall portion for closing said channels at their radial outer ends and air passage means in said annular wall portion for permitting, during operation of the tool, air to enter through said passage means into said channels and out through said openings.
Claim 5
Dependent Claim
71 words
A tool according to claim 1, wherein said annular plate means comprises a base portion and a centrally hollow domed portion rising from the base portion, said hub portion being at the upper end of said domed portion, said wall divider means extending from said base portion toward said disk means, said disk means being in direct engagement with said wall divider means in its assembled relationship to said plate means.
Claim 6
Dependent Claim
69 words
A tool according to claim 4, wherein said flow constraining means comprises a peripheral flange at the radial outer end of said base portion for closing said channels at the radial outer ends thereof and passage means formed at the radial inner end of said base portion for permitting, during operation of the tool, air to enter through said passage means into said channels and out through said openings.
Claim 7
Dependent Claim
59 words
A tool according to claim 5, wherein said base portion is formed with a central conical depression communicating with the interior of said domed portion, said disk means having a central upstanding conical section the conical wall of which engages, in the operative position of the disk means, the conical wall defining the central depression in the base member.
Claim 8
Dependent Claim
22 words
A tool according to claim 6, wherein the innEr ends of the wall divider means terminate radially outwardly of said conical depression.
Claim 9
Dependent Claim
32 words
A tool according to claim 5, wherein said passage means is formed in said base portion in a region between the inner ends of said wall divider means and said conical depression.
Claim 10
Dependent Claim
14 words
A tool according to claim 8, wherein said wall divider means comprise curvilinear ribs.
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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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |