Patent US3879903A successfully refreshed from Google Patents.
US3879903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel or drum construction and packs therefor
Assignee: Belanger Inc
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Filing: 1973-02-06
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Granted: 1975-04-29
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Expires: 1993-02-06
Abstract
Abstract The drum-like wheel is provided radially outwardly of its rotative driver hub portion with a circumferentially spaced series of axially elongated and continuous, keyholeshaped sectional slots or grooves. These parallel one another in the series; and each slot slidably and removably receives one of a set of like circumferentially spaced abrasive finishing packs or fills, said packs each including a forked clip member clamping a stack of abrasive sheets as part of the pack. The clips are solid in cross section, being extrusion molded, and each has a reduced width neck portion of optional radial dimension integrally connecting the forked portion of the clip with an integral, radially inner mounting portion of enlarged bead-like cross section, at which the clip and its sheet stack have an axially slidable mating interfit in the keyhole slots of the wheel hub. As thus mounted the clips have a fixed, non-pivotal relationship to the hub.
Inventors
- 👤 James A Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:02
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
220 words
A workpiece finishing unit comprising fill material to be mounted in a position radially outwardly of the axis of a rotary driver structure, and a rigid unitary clip member for supporting and so mounting said fill material on such structure, said member being continuously and uninterruptedly coextensive in axial length with said fill material, and in a solid cross-section throughout in a plane at 90* to said axis as thus mounted, said clip member presenting a radially outer portion of generally Ushape having a laterally extending base and having a pair of outer, generally parallel and spaced apart forked arms between which said fill material is clamped extending outwardly from the side edges of said base, a radially inner, axially extending and transversely enlarged bead-like mounting portion of cylindrical configuration, and an intermediate solid neck portion integrally connecting said bead-like mounting portion and said radially outer portion being connected to the base of the latter midway between the side edges thereof, said neck portion being substantially narrower than said base so that said base projects laterally in opposite directions beyond the sides of said neck portion, said bead-like portion and said neck portion being shaped for a slidingly mating engagement with the driver structure, said outer, neck and bead-like portions being components of an extruded axially elongated length of stock.
Claim 2
Dependent Claim
220 words
A workpiece finishing unit comprising fill material to be mounted in a position radially outwardly of the axis of a rotary driver structure, and a rigid unitary clip member for supporting and so mounting said fill material on such structure, said member being continuously and uninterruptedly coextensive in axial length with said fill material, and in a solid cross-section throughout in a plane at 90* to said axis as thus mounted, said clip member presenting a radially outer portion of generally Ushape having a laterally extending base and having a pair of outer, generally parallel and spaced apart forked arms between which said fill material is clamped extending outwardly from the side edges of said base, a radially inner, axially extending and transversely enlarged bead-like mounting portion of cylindrical configuration, and an intermediate solid neck portion integrally connecting said bead-like mounting portion and said radially outer portion being connected to the base of the latter midway between the side edges thereof, said neck portion being substantially narrower than said base so that said base projects laterally in opposite directions beyond the sides of said neck portion, said bead-like portion and said neck portion being shaped for a slidingly mating engagement with the driver structure, said outer, neck and bead-like portions being components of an extruded axially elongated length of stock.
Claim 3
Dependent Claim
104 words
The combination in a finishing wheel of a unit in accordance with claim 1, and a driver structure as therein referred to, said structure being provided with a plurality of like circumferentially spaced, parallel, axially extending and radially outwardly opening slots of generally keyhole-shaped cross-section, in each of which the bead-like mounting portion of a finishing unit is slidably mounted with a substantially mating fit, said slots being substantially coextensive in overall axial dimension with the units, said bead-like mounting and neck portions of said clip member being fixedly held in the slot against individual swing of the clip member relative to said structure.
Claim 4
Dependent Claim
37 words
The combination of claim 2, in which the radial dimension of said neck portion of the clip member is such as to locate the latter''s outer forked arms in substantially outwardly spaced relation to said hub structure.
Claim 5
Dependent Claim
35 words
The combination of claim 2, in which the radial dimension of said neck portion of the clip member is such as to locate the latter''s outer forked arms in radial engagement with said hub structure.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |