Patent US3678633A successfully refreshed from Google Patents.
US3678633A
Expired / Lapsed
US
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Abrasive pack with anchor assembly
Assignee: Merit Holding Inc
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Filing: 1970-12-07
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Granted: 1972-07-25
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Expires: 1990-12-07
Abstract
Abstract An abrasive pack and anchor assembly for mounting, in plurality, on an axial hub to provide an abrasive drum. The hub is of the type having a substantially cylindrical surface, with substantially longitudinal slots recessed into said surface, each of said slots receiving one of said packs. The abrasive pack of the invention is a laminar assembly of abrasive strips having a length substantially the length of the slotted hub. The base portions of said strips are bonded together by adhesive, and preferably, are compressed to form a relatively solid base structure having a flat planar base surface adapted to seat on the bottom of the slot. The base structure of the pack is transversely pierced at longitudinally spaced intervals by transverse apertures. A reusable anchor member is comprised of a retainer bar seating on one sidewall of said base structure; with short transverse bar members extending laterally of said retainer bar, and integral therewith, at longitudinal spacing corresponding to the spacing of said apertures in the base structure of said pack. When said anchor member is assembled to one of said laminar packs, and drawn longitudinally into one of said hub slots, the abrasive pack assembly is retained in position in said slot.
Inventors
- 👤 Aleck Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:25
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
An abrasive drum comprising in combination: a hub having longitudinal undercut slots circumferentially spaced along its outer surface region, each slot opening to the periphery of the hub and being restricted by at least one longitudinal slot shoulder, a pack of abrasive strips mounted in each of said slots, said strips of each pack having base portions compressed and secured together to form a base structure for said pack, said base structure having a transverse thickness less than the remainder of said pack and extending through said slot opening, said base structure being provided with transverse apertures at longitudinally spaced intervals from one end of said pack to the other, an anchor for each pack comprising a longitudinal bar seating on one side of said base structure, and having a thickness sufficient to make anchoring engagement under a longitudinal shoulder of said slot, and a plurality of relatively short transverse bars, integral with said longitudinal bar, spaced along said longitudinal bar and inserted through said transverse apertures in said base structure.
Claim 2
Dependent Claim
171 words
An abrasive drum comprising in combination: a hub having longitudinal undercut slots circumferentially spaced along its outer surface region, each slot opening to the periphery of the hub and being restricted by at least one longitudinal slot shoulder, a pack of abrasive strips mounted in each of said slots, said strips of each pack having base portions compressed and secured together to form a base structure for said pack, said base structure having a transverse thickness less than the remainder of said pack and extending through said slot opening, said base structure being provided with transverse apertures at longitudinally spaced intervals from one end of said pack to the other, an anchor for each pack comprising a longitudinal bar seating on one side of said base structure, and having a thickness sufficient to make anchoring engagement under a longitudinal shoulder of said slot, and a plurality of relatively short transverse bars, integral with said longitudinal bar, spaced along said longitudinal bar and inserted through said transverse apertures in said base structure.
Claim 3
Dependent Claim
21 words
A combination as defined in claim 1 in which the base portions of the strips in each pack are bonded together.
Claim 4
Dependent Claim
47 words
A combination as defined in claim 2 in which said transverse bars protrude from the side of said base structure of said pack opposite to that upon which said longitudinal bar is seated a sufficient distance to make anchoring engagement under a longitudinal shoulder of said slot.
Claim 5
Dependent Claim
49 words
A combination as defined in claim 2 in which surfaces of said anchor making anchoring engagement with said slot present a transverse cross sectional profile conforming generally to the transverse cross section of the interior of said slot to make snug anchoring engagement with the walls of said slot.
Claim 6
Dependent Claim
134 words
A pack of abrasive leaves and retainer therefor adapted for endwise insertion in an undercut slot in a rotary hub the slot having a peripheral opening of restricted transverse magnitude relative to its undercut portion, the pack comprising a plurality of identical flexible sheets coated at least on one side with abrasive material, means securing said sheets together along one edge, forming a base structure, perforations through said base structure, and an anchoring member comprising an elongated bar dimensioned to lie along one side of the base structure, prongs extending transversely from the elongated bar inserted through the apertures, the anchoring member having a transverse magnitude greater than the thickness of the base structure where the edges are secured, the anchoring member being removable from the assembly by withdrawing the prongs from the apertures.
Claim 7
Dependent Claim
134 words
A pack of abrasive leaves and retainer therefor adapted for endwise insertion in an undercut slot in a rotary hub the slot having a peripheral opening of restricted transverse magnitude relative to its undercut portion, the pack comprising a plurality of identical flexible sheets coated at least on one side with abrasive material, means securing said sheets together along one edge, forming a base structure, perforations through said base structure, and an anchoring member comprising an elongated bar dimensioned to lie along one side of the base structure, prongs extending transversely from the elongated bar inserted through the apertures, the anchoring member having a transverse magnitude greater than the thickness of the base structure where the edges are secured, the anchoring member being removable from the assembly by withdrawing the prongs from the apertures.
Claim 8
Dependent Claim
44 words
A pack of abrasive leaves and retainer therefor as defined in claim 5 in which said elongated bar of said anchoring member possesses sufficient resilient deformability in longitudinal profile, to permit it to be deformed to follow a slot disposed along a helical line.
Claim 9
Dependent Claim
29 words
A pack of abrasive leaves and retainer therefor as defined in claim 5 in which the means securing the sheets together forming the base structure is a bonding agent.
Claim 10
Dependent Claim
30 words
A pack of abrasive leaves and retainer therefor as defined in claim 5 in which the means securing the sheets together forming the base structure is a series of staples.
Claim 11
Dependent Claim
136 words
An abrasive unit comprising a stack of abrasive leaves, means securing the leaves together in the marginal region of one of their corresponding edges forming a pack base structure, longitudinally spaced transverse apertures in said base structure, And an anchor member removably installed on said base structure comprising a longitudinal bar with transverse bars extending therefrom, the longitudinal bar having a length generally corresponding to the length of the base structure and lying against one side of the latter, the transverse bars having a length generally corresponding to at least the thickness of the base structure and disposed in the apertures of the latter, the anchor member providing a transversely extending shoulder on at least one side of the base structure and serving to retain the stack of leaves in fixed relationship with the anchor member.
Claim 12
Dependent Claim
136 words
An abrasive unit comprising a stack of abrasive leaves, means securing the leaves together in the marginal region of one of their corresponding edges forming a pack base structure, longitudinally spaced transverse apertures in said base structure, And an anchor member removably installed on said base structure comprising a longitudinal bar with transverse bars extending therefrom, the longitudinal bar having a length generally corresponding to the length of the base structure and lying against one side of the latter, the transverse bars having a length generally corresponding to at least the thickness of the base structure and disposed in the apertures of the latter, the anchor member providing a transversely extending shoulder on at least one side of the base structure and serving to retain the stack of leaves in fixed relationship with the anchor member.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |