US4774788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel with a single-piece hub
Assignee: CAMEL GRINDING WHEEL WORKS SARID Ltd
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Filing: 1986-05-06
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Granted: 1988-10-04
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Expires: 2006-05-06
Abstract
Abstract A mounting hub for securing an abrasive grinding wheel to a grinding machine spindle, the hub being formed in a single, integral piece of polymer plastic material. Flanges on each wheel face grip the wheel faces, and a mounting projection provides a spindle bore for receiving the grinding machine spindle. The hub is molded directly on the wheel, resulting in the formation of an interpenetration zone at the hub/wheel interface, in which the abrasive material of the wheel and the polymer plastic material intermix and mesh, producing a strong, durable bond.
Inventors
- 👤 Amnon Shacham
- 👤 Eitan Rogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:14
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
A grinding wheel hub assembly, for mounting an abrasive grinding wheel having a mounting aperture on a grinding apparatus, comprising: a cutting face flange, extending radially outward from the mounting aperture and engaged with the cutting face of the wheel; an aperture fitting, integral with said cutting face flange, extending through and in engagment with the surface of the mounting aperture; a backing flange, integral with said aperture fitting, extending radially outward from the mounting aperture and in engagement with the backing face of the wheel, having integral mounting projection means for mounting the wheel on the grinding apparatus spindle; said cutting face flange, said backing flange and said aperture fitting being formed of a high-strength plastic material and dimensioned to transmit driving forces to the grinding wheel and to provide structural support to the grinding wheel when the wheel is mounted on the grinding apparatus; and an interpenetration zone disposed at locations where said flanges and said aperture fitting engage the wheel body, wherein portions of said cutting flange, aperture fitting and backing flange penetrate the surface of the wheel body for securing said flanges and said aperture fitting to same.
Claim 2
Dependent Claim
192 words
A grinding wheel hub assembly, for mounting an abrasive grinding wheel having a mounting aperture on a grinding apparatus, comprising: a cutting face flange, extending radially outward from the mounting aperture and engaged with the cutting face of the wheel; an aperture fitting, integral with said cutting face flange, extending through and in engagment with the surface of the mounting aperture; a backing flange, integral with said aperture fitting, extending radially outward from the mounting aperture and in engagement with the backing face of the wheel, having integral mounting projection means for mounting the wheel on the grinding apparatus spindle; said cutting face flange, said backing flange and said aperture fitting being formed of a high-strength plastic material and dimensioned to transmit driving forces to the grinding wheel and to provide structural support to the grinding wheel when the wheel is mounted on the grinding apparatus; and an interpenetration zone disposed at locations where said flanges and said aperture fitting engage the wheel body, wherein portions of said cutting flange, aperture fitting and backing flange penetrate the surface of the wheel body for securing said flanges and said aperture fitting to same.
Claim 3
Dependent Claim
22 words
The hub assembly of claim 1, wherein said flanges and said aperture fitting are formed of integrally-molded piece of polymeric plastic material.
Claim 4
Dependent Claim
24 words
The hub assembly of claim 2, wherein said polymeric plastic material is selected from the group consisting of polyester, polystyrene, polyacetal or nylon plastic.
Claim 5
Dependent Claim
20 words
The hub assembly of claim 2 wherein said polymeric plastic material is a nylon material reinforced with a fiberglass material.
Claim 6
Dependent Claim
91 words
In a hub assembly mounted in the mounting aperture of an abrasive grinding wheel having a cutting face flange engaging one face of the wheel, connected with a backing flange engaging the opposite face of the wheel, the improvement wherein: the hub is a single unit of integrally-molded polymeric plastic material, the hub assembly further comprising an interpenetration zone at areas where the hub makes contact with the wheel, wherein portions of said polymeric plastic material intermix and mesh with the wheel abrasive material to secure the hub to the wheel.
Claim 7
Dependent Claim
91 words
In a hub assembly mounted in the mounting aperture of an abrasive grinding wheel having a cutting face flange engaging one face of the wheel, connected with a backing flange engaging the opposite face of the wheel, the improvement wherein: the hub is a single unit of integrally-molded polymeric plastic material, the hub assembly further comprising an interpenetration zone at areas where the hub makes contact with the wheel, wherein portions of said polymeric plastic material intermix and mesh with the wheel abrasive material to secure the hub to the wheel.
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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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |