Patent JPS5945644A successfully refreshed from Google Patents.
Patent US3827185A successfully refreshed from Google Patents.
US3827185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice skate sharpening apparatus
Assignee: MATCH E CO Ltd
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Filing: 1972-07-26
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Granted: 1974-08-06
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Expires: 1992-07-26
Abstract
Abstract Apparatus for the sharpening of ice skates is disclosed. The apparatus consists of a carriage assembly having clamping means thereon for clamping a pair of skates to be sharpened. The carriage assembly is mounted for reciprocal longitudinal movement on a track carried by suitable framing and during forward and rearward movement of the carriage it passes over rotating grindstones which sharpen the skate blades. Each sharpening grindstone is independently pivotally mounted whereby the grindstones are lowered upon contact by the skate blades to follow the profile of the skate blade during forward movement of the carriage. The grindstones or grinding wheels may contact and further sharpen the skate blades during rearward movement of the carriage, or the grindstones may be lowered out of contact with the blades during rearward movement. Preferably the unit is provided with a cover to completely enclose the operating mechanism during operation for safety. The apparatus may be provided with a suitable microswitch which will not permit operation of the apparatus until the cover is completely closed. Uniform sharpening of skate blades is obtained as the blades travel over the sharpening grindstones at a uniform rate of speed and the pressure applied by the grindstone against the blades are constant throughout the sharpening operation.
Inventors
- 👤 J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:59
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/003
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
340 words
Ice skate sharpening apparatus comprising: a. a frame supporting an upper, horizontal and longitudinal track; b. a carriage mounted for straight line reciprocation on said track; c. clamp means on said carriage to receive and secure at least one ice skate blade so that its ice engaging edge faces downwardly and is alligned parallel to the line of reciprocation of said carriage; d. a transverse mounting shaft fixed to the frame below the track and normal to the line of reciprocation of the carriage; e. at least one arm pivotally mounted on the shaft and lying in a plane parallel to the line of reciprocation of the carriage; f. a rotatable disc-shaped grinding element having a convex edge carried by one end of the arm, the disc-shaped grinding element lying in the plane containing the line of reciprocation of the skate blade; g. adjustable counter-weight means carried by the other end of the arm causing the arm to rotate about the mounting shaft to bring the convex edge of the grinding element into gravity biased contact with the skate blade; h. electric motor means to drive the carriage from a starting position at one end of the track to a position at the other end of the track and to return it to the starting position, thereby causing the skate blade to traverse the grinding wheel element; i. said electric motor also rotating the grinding element at the same time; j. means associated with the means to drive the carriage operable to pivot the arm carrying the grinding element so as to lower the grinding element out of engagement with the skate blade while the carriage is returning from its position at the other end of the track to tis starting position, and k. grinding element dressing means positioned to be engaged by the rotating grinding element during movement of the carriage from its position at the said other end of the track to its starting position to maintain the desired convex configuration of the edge of the grinding element.
Claim 2
Dependent Claim
340 words
Ice skate sharpening apparatus comprising: a. a frame supporting an upper, horizontal and longitudinal track; b. a carriage mounted for straight line reciprocation on said track; c. clamp means on said carriage to receive and secure at least one ice skate blade so that its ice engaging edge faces downwardly and is alligned parallel to the line of reciprocation of said carriage; d. a transverse mounting shaft fixed to the frame below the track and normal to the line of reciprocation of the carriage; e. at least one arm pivotally mounted on the shaft and lying in a plane parallel to the line of reciprocation of the carriage; f. a rotatable disc-shaped grinding element having a convex edge carried by one end of the arm, the disc-shaped grinding element lying in the plane containing the line of reciprocation of the skate blade; g. adjustable counter-weight means carried by the other end of the arm causing the arm to rotate about the mounting shaft to bring the convex edge of the grinding element into gravity biased contact with the skate blade; h. electric motor means to drive the carriage from a starting position at one end of the track to a position at the other end of the track and to return it to the starting position, thereby causing the skate blade to traverse the grinding wheel element; i. said electric motor also rotating the grinding element at the same time; j. means associated with the means to drive the carriage operable to pivot the arm carrying the grinding element so as to lower the grinding element out of engagement with the skate blade while the carriage is returning from its position at the other end of the track to tis starting position, and k. grinding element dressing means positioned to be engaged by the rotating grinding element during movement of the carriage from its position at the said other end of the track to its starting position to maintain the desired convex configuration of the edge of the grinding element.
Claim 3
Dependent Claim
75 words
Ice skate sharpening apparatus as claimed in claim 1 wherein the clamp means are capable of receiving and securing a pair of ice skate blades in parallel, side by side relationship and wherein the traverse mounting shaft carries a pair of arms independently pivotable thereon, each arm carrying a disc-shaped grinding element at one end and counter-weight means at the other end, each grinding element lying in the plane of one of the skate blades.
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |