US3597880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice-skating grinding apparatus
Assignee: Individual
•
Filing: 1969-03-14
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Granted: 1971-08-10
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Expires: 1989-03-14
Abstract
Abstract A grinding apparatus for sharpening the edges of ice skates employing a conoidal abrasive element and aligning means for grinding a symmetrical arcuate surface of a desired uniform concavity on the edge of an ice skate blade.
Inventors
- 👤 Leo I Norgiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
166 words
A grinding apparatus comprising in combination a frame, supporting means for supporting a skate blade to be sharpened with the centerline of the edge thereof disposed in a first plane, a conoidal abrasive element rotatably mounted on said frame for rotation about its axis, said axis disposed in a second plane parallel to said first plane, adjusting means for adjusting the distance between said abrasive element and the blade for effecting coincidence between said first and said second plane, and alignment means on said frame to facilitate adjustment for effecting coincidence of said first and said second plane, said aligning means comprising a member pivotally mounted on said frame for movement between an aligned position corresponding to coincidence between said first and said second plane and a nonaligned position spaced therefrom, coacting means on said member for engaging the edge of a blade on said supporting means And sensing the position thereof, and indicating means for indicating when said member is disposed in said aligned position.
Claim 2
Dependent Claim
166 words
A grinding apparatus comprising in combination a frame, supporting means for supporting a skate blade to be sharpened with the centerline of the edge thereof disposed in a first plane, a conoidal abrasive element rotatably mounted on said frame for rotation about its axis, said axis disposed in a second plane parallel to said first plane, adjusting means for adjusting the distance between said abrasive element and the blade for effecting coincidence between said first and said second plane, and alignment means on said frame to facilitate adjustment for effecting coincidence of said first and said second plane, said aligning means comprising a member pivotally mounted on said frame for movement between an aligned position corresponding to coincidence between said first and said second plane and a nonaligned position spaced therefrom, coacting means on said member for engaging the edge of a blade on said supporting means And sensing the position thereof, and indicating means for indicating when said member is disposed in said aligned position.
Claim 3
Dependent Claim
153 words
A grinding apparatus comprising in combination a frame, supporting means for supporting a skate blade to be sharpened with the centerline of the edge thereof disposed in a first plane, a conoidal abrasive element rotatably mounted on said frame for rotation about its axis, said axis disposed in a second plane parallel to said first plane, adjusting means for adjusting the distance between said abrasive element and the blade for effecting coincidence between said first and said second plane, and alignment means on said frame to facilitate adjustment for effecting coincidence of said first and said second plane, said aligning means comprising a member pivotally mounted on said frame, said member formed with an aligning notch for removably receiving the edge of a blade on said supporting means, and latching means for restricting pivoting movement of said member when said aligning notch is disposed in coincidence with said first and said second plane.
Claim 4
Dependent Claim
153 words
A grinding apparatus comprising in combination a frame, supporting means for supporting a skate blade to be sharpened with the centerline of the edge thereof disposed in a first plane, a conoidal abrasive element rotatably mounted on said frame for rotation about its axis, said axis disposed in a second plane parallel to said first plane, adjusting means for adjusting the distance between said abrasive element and the blade for effecting coincidence between said first and said second plane, and alignment means on said frame to facilitate adjustment for effecting coincidence of said first and said second plane, said aligning means comprising a member pivotally mounted on said frame, said member formed with an aligning notch for removably receiving the edge of a blade on said supporting means, and latching means for restricting pivoting movement of said member when said aligning notch is disposed in coincidence with said first and said second plane.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |