Patent US3841034A successfully refreshed from Google Patents.
US3841034A
Expired / Lapsed
US
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Tread grinding wheel
Assignee: Individual
•
Filing: 1972-11-10
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Granted: 1974-10-15
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Expires: 1992-11-10
Abstract
Abstract A self-cooling tread grinding wheel having a longitudinally flat or concave carbide coated body with a series of longitudinally spaced circular rows of radial air cooling slots, wherein, the slots extend part way through the body or all the way through the body. A modified grinding wheel of either type of slot, wherein, the slots are parallel, staggered or intersecting and parallel to or inclined to the body axis. A further modification of either type, wherein, the slots are longitudinally overlapped at their inner ends and may be of uniform depth or of decreasing depth at the slot ends.
Inventors
- 👤 G Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:57
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/10; Y; Y10; Y10S; Y10S451/00; Y10S451/92
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
152 words
A self-cooling tread grinding wheel comprising an axially elongated annular body having an abrasive exterior surface; said body being unitary and having a concave Exterior surface configuration in the direction of its longitudinal axis; a radially transverse internal web and a hub parallel to the longitudinal axis of said body, for mounting upon a drive shaft; said body having a series of longitudinal spaced circumferential rows of elongated non-circular air cooling slots; said elongated slots extending radially inward from the exterior surface of the body to a depth not more than one half the body thickness; said elongated slots being spaced axially inward of the longitudinal ends of said body; the slots in each row being parallel; said slots being of maximum depth intermediate their ends, with end portions of the slots running out to the outer surface of the body; said slots extending at an acute angle to the body axis.
Claim 2
Dependent Claim
152 words
A self-cooling tread grinding wheel comprising an axially elongated annular body having an abrasive exterior surface; said body being unitary and having a concave Exterior surface configuration in the direction of its longitudinal axis; a radially transverse internal web and a hub parallel to the longitudinal axis of said body, for mounting upon a drive shaft; said body having a series of longitudinal spaced circumferential rows of elongated non-circular air cooling slots; said elongated slots extending radially inward from the exterior surface of the body to a depth not more than one half the body thickness; said elongated slots being spaced axially inward of the longitudinal ends of said body; the slots in each row being parallel; said slots being of maximum depth intermediate their ends, with end portions of the slots running out to the outer surface of the body; said slots extending at an acute angle to the body axis.
Claim 3
Dependent Claim
59 words
In the grinding wheel of claim 1, the slots in one row being staggered with respect to the slots of an adjacent row; the slots in one row at their inner ends longitudinally overlapping the slots of an adjacent row; the slots of one row extending at an abtuse angle with respect to the slots of an adjacent row.
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |