Patent US4294455A successfully refreshed from Google Patents.
US4294455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skate construction
Assignee: M&K Industries Inc
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Filing: 1979-05-02
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Granted: 1981-10-13
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Expires: 1999-05-02
Abstract
Abstract A roller skate construction including an elongated cast plastic body member having a hollow extending substantially throughout the length thereof and including front and rear axle supporting portions having bores therein with the sides of the bores being diverging so as to act as limit stops for the central portions of the axles which are pivotally mounted by means of bolts extending therethrough and received in the front and rear axle supporting portions. Wear plates are positioned in the bores between the axles and the axle supporting portions to take the wear due to pivotal movement of the axles. A toe stop construction consisting of a substantially solid rectangular block with a slot therein to receive the front portion of a skate body in complementary mating relationship and a bolt nonrotatably extending through the toe stop and the skate body for mounting the toe stop, the configuration of the slot and the toe portion of the skate body being such so that there can be no pivotal movement of the toe stop.
Inventors
- 👤 Arnold F. Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:33
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
189 words
A roller skate construction comprising an elongated cast plastic body member including front and rear axle supporting portions, first and second bores in said front and rear axle supporting portions, respectively, first and second axles extending through said first and second bores, respectively, first and second axle supporting bolts extending perpendicularly through said first and second axles, respectively, in said front and rear axle supporting portions, respectively, first and second wear plates in said first and second bores, respectively, interposed between said first and second axles, respectively, and said front and rear axle supporting portions, respectively, for bearing the load of said first and second axles, respectively, said first and second axles including a rectangular solid central portion through which said first and second axle supporting bolts, respectively, extend, and flat planar portions defining the sides of said first and second bores and diverging away from said rectangular solid central portions on opposite sides of a plane extending perpendicularly thereto and passing through the axis of said first and second bolts, said flat planar portions providing limit stops for limiting pivotal movement of said first and second axles, respectively.
Claim 2
Dependent Claim
189 words
A roller skate construction comprising an elongated cast plastic body member including front and rear axle supporting portions, first and second bores in said front and rear axle supporting portions, respectively, first and second axles extending through said first and second bores, respectively, first and second axle supporting bolts extending perpendicularly through said first and second axles, respectively, in said front and rear axle supporting portions, respectively, first and second wear plates in said first and second bores, respectively, interposed between said first and second axles, respectively, and said front and rear axle supporting portions, respectively, for bearing the load of said first and second axles, respectively, said first and second axles including a rectangular solid central portion through which said first and second axle supporting bolts, respectively, extend, and flat planar portions defining the sides of said first and second bores and diverging away from said rectangular solid central portions on opposite sides of a plane extending perpendicularly thereto and passing through the axis of said first and second bolts, said flat planar portions providing limit stops for limiting pivotal movement of said first and second axles, respectively.
Claim 3
Dependent Claim
66 words
A roller skate construction as set forth in claim 1 wherein said first and second wear plates are of butterfly shape in plane with said plane passing through the narrowest portion of said butterfly, said first and second wear plates fitting in complementary mating relationship with said diverging planar sides of said first and second bores, respectively, and receiving said first and second bolts, respectively, therethrough.
Claim 4
Dependent Claim
30 words
A roller skate construction as set forth in claim 2 wherein said first and second bolts are received in blind bores in said front and rear axle supporting portions, respectively.
Claim 5
Dependent Claim
54 words
A roller skate construction as set forth in claim 3 including a pair of substantially parallel flanges for attachment to a shoe, and a hollow in said body portion between said flanges and extending substantially the entire length of said body portion and for a substantial portion of the depth of said body portion.
Claim 6
Dependent Claim
32 words
A roller skate construction as set forth in claim 4 wherein the thickness of a substantial number of the portions of said body portion bordering said hollow are of substantially uniform thickness.
Claim 7
Dependent Claim
26 words
A roller skate construction as set forth in claim 5 wherein said hollow extends into the upper portions of said front and rear axle supporting portions.
Claim 8
Dependent Claim
145 words
A cast plastic skate body comprising a central body portion, front and rear axle supporting portions integral with said central body portion, first and second elongated substantially parallel flanges extending substantially the entire length of said central body portion for mounting on a shoe, a hollow in said central body portion between said flanges, first and second substantially parallel walls on said central body portion on the opposite sides of said hollow merging into said first and second flanges, respectively, first and second bores cast integrally with said front and rear axle supporting portions, respectively, a front and rear blind tapped bore in said front and rear axle supporting portions, respectively, a front and rear counterbore in alignment with said front and rear blind tapped bore, respectively, and first and second pairs of diverging side walls in each of said first and second bores, respectively.
Claim 9
Dependent Claim
145 words
A cast plastic skate body comprising a central body portion, front and rear axle supporting portions integral with said central body portion, first and second elongated substantially parallel flanges extending substantially the entire length of said central body portion for mounting on a shoe, a hollow in said central body portion between said flanges, first and second substantially parallel walls on said central body portion on the opposite sides of said hollow merging into said first and second flanges, respectively, first and second bores cast integrally with said front and rear axle supporting portions, respectively, a front and rear blind tapped bore in said front and rear axle supporting portions, respectively, a front and rear counterbore in alignment with said front and rear blind tapped bore, respectively, and first and second pairs of diverging side walls in each of said first and second bores, respectively.
Claim 10
Dependent Claim
23 words
A cast plastic skate body as set forth in claim 7 wherein said hollow extends into said front and rear axle supporting portions.
Claim 11
Dependent Claim
22 words
A cast plastic skate body as set forth in claim 7 wherein said flanges and said walls are of substantial equal thickness.
Claim 12
Dependent Claim
142 words
A cast plastic skate body comprising a central body portion, front and rear axle supporting portions integral with said central body portion, first and second elongated substantially parallel flanges extending substantially the entire length of said central body portion for mounting on a shoe, a hollow in said central body portion between said flanges, first and second substantially parallel walls on said central body portion on the opposite sides of said hollow merging into said first and second flanges, respectively, first and second bores extending through said front and rear axle supporting portions, respectively, and a pair of first walls and a pair of second walls forming the sides of each of said first and second bores, respectively, each of said first walls and said second walls diverging away from a plane which extends transversely to both said first and second bores.
Claim 13
Dependent Claim
142 words
A cast plastic skate body comprising a central body portion, front and rear axle supporting portions integral with said central body portion, first and second elongated substantially parallel flanges extending substantially the entire length of said central body portion for mounting on a shoe, a hollow in said central body portion between said flanges, first and second substantially parallel walls on said central body portion on the opposite sides of said hollow merging into said first and second flanges, respectively, first and second bores extending through said front and rear axle supporting portions, respectively, and a pair of first walls and a pair of second walls forming the sides of each of said first and second bores, respectively, each of said first walls and said second walls diverging away from a plane which extends transversely to both said first and second bores.
Claim 14
Dependent Claim
23 words
A cast plastic skate body as set forth in claim 10 wherein said hollow extends into said front and rear axle supporting portions.
Claim 15
Dependent Claim
21 words
A cast plastic skate body as set forth in claim 11 wherein said flanges and walls are of substantial equal thickness.
Claim 16
Dependent Claim
148 words
A skate body comprising a central body portion having a longitudinal axis, front and rear axle supporting portions on said central body portion, means for mounting said skate body on a shoe, first and second bores extending through said front and rear axle supporting portions, respectively, in a direction transverse to said longitudinal axis, first and second axles extending through said first and second bores, respectively, first and second axle supporting bolts extending perpendicularly through said first and second axles, respectively, in said front and rear axle supporting portions, respectively, for pivotally mounting said first and second axles, respectively, said axle supporting bolts lying in a vertical plane, said first and second walls forming the sides of each of said first and second bores, respectively, said first and second walls each including surface means inclined to said plane for limiting pivotal movement of said first and second axles.
Claim 17
Dependent Claim
148 words
A skate body comprising a central body portion having a longitudinal axis, front and rear axle supporting portions on said central body portion, means for mounting said skate body on a shoe, first and second bores extending through said front and rear axle supporting portions, respectively, in a direction transverse to said longitudinal axis, first and second axles extending through said first and second bores, respectively, first and second axle supporting bolts extending perpendicularly through said first and second axles, respectively, in said front and rear axle supporting portions, respectively, for pivotally mounting said first and second axles, respectively, said axle supporting bolts lying in a vertical plane, said first and second walls forming the sides of each of said first and second bores, respectively, said first and second walls each including surface means inclined to said plane for limiting pivotal movement of said first and second axles.
Claim 18
Dependent Claim
27 words
A skate body as set forth in claim 13 wherein said surface means comprise a pair of wall portions diverging from opposite sides of said vertical plane.
Claim 19
Dependent Claim
198 words
A toe stop construction for a roller skate comprising in combination a skate body, a front body portion of noncircular form in plan on said skate body, said front body portion having a pair of sides defining the outer limits of said front body portion, and a front extending transversely thereto, a toe stop having a top and a bottom, an elongated slot in said top for receiving at least said sides of said front body portion in abutting relationship, a bolt-receiving bore in said bottom extending transversely to said slot for receiving a bolt which is also received in said front body portion, said elongated slot being of sufficient depth so as to preclude said toe stop from pivoting about the axis of said bolt, a second bolt-receiving bore in said front body portion aligned with said bolt-receiving bore in said bottom of said toe stop, a counterbore of noncircular configuration in said front body portion, a nut in said counterbore, said nut being of a configuration to be engaged by said counterbore and held against rotation therein, and a pin extending through said nut and bolt and front body portion to lock said bolt in position.
Claim 20
Dependent Claim
198 words
A toe stop construction for a roller skate comprising in combination a skate body, a front body portion of noncircular form in plan on said skate body, said front body portion having a pair of sides defining the outer limits of said front body portion, and a front extending transversely thereto, a toe stop having a top and a bottom, an elongated slot in said top for receiving at least said sides of said front body portion in abutting relationship, a bolt-receiving bore in said bottom extending transversely to said slot for receiving a bolt which is also received in said front body portion, said elongated slot being of sufficient depth so as to preclude said toe stop from pivoting about the axis of said bolt, a second bolt-receiving bore in said front body portion aligned with said bolt-receiving bore in said bottom of said toe stop, a counterbore of noncircular configuration in said front body portion, a nut in said counterbore, said nut being of a configuration to be engaged by said counterbore and held against rotation therein, and a pin extending through said nut and bolt and front body portion to lock said bolt in position.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |