US3738675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski core of plastic foam material
Assignee: Nippon Gakki Co Ltd
•
Filing: 1970-12-23
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Granted: 1973-06-12
•
Expires: 1990-12-23
Abstract
Abstract A ski core comprises an elongated core body of plastic foam material, and a screw-holding plate embedded in the core body at an intermediate portion along the length of the core body. The screw-holding plate tightly receives screws fastening a shoeclamping device to the ski core and may be made of wood, aluminum, or wire netting. The screw-holding plate also serves for the formation of rigid skin layers of the core body around the plate when the core body is molded with the plate contained within the mold cavity.
Inventors
- 👤 O Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:59
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/12; A63C5/126; A63C5/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A ski core comprising an elongated core body of a plastic foam having opposed major surfaces and first and second side surfaces, and screw-holding means embedded in said core body and extending lengthwise thereof at an intermediate portion of said core body, said screw-holding means comprising a plurality of net-like members arranged in said core body, each of said netlike members extending perpendicular to said first and second major surfaces of said core body to facilitate an extended engagement with screws disposed into said core body.
Claim 2
Dependent Claim
86 words
A ski core comprising an elongated core body of a plastic foam having opposed major surfaces and first and second side surfaces, and screw-holding means embedded in said core body and extending lengthwise thereof at an intermediate portion of said core body, said screw-holding means comprising a plurality of net-like members arranged in said core body, each of said netlike members extending perpendicular to said first and second major surfaces of said core body to facilitate an extended engagement with screws disposed into said core body.
Claim 3
Dependent Claim
26 words
A ski core as claimed in claim 1 wherein said net-like members are spaced at a distance of 3 to 5 mm between the adjacent ones.
Claim 4
Dependent Claim
18 words
A ski core as claimed in claim 1, wherein each of said net-like members comprises a metal wire.
References Cited (Backward Citations)
CH200702A
Cited
AT169173B
Cited
US2361030A
Cited
AT217924B
Cited
FR1261832A
Cited
FR1282053A
Cited
CH413683A
Cited
FR1435153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |