Safety screw particularly for skates

Details Safety screw particularly for skates Safety screw particularly for skates

1994-02-10

1995-10-03

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element with nut, washer, securing means or cap

Lap bolt or fastener

411366, 411399, 411947, F16B 2100, F16B 2300, F16B 3506

Patent

active

054546761

ABSTRACT:
A safety screw for skates, including a male part, provided with a first head and with a first internally threaded stem, and a female part, provided with a second head and with a second stem that has a complementarily threaded first seat for the first stem. In this screw, the male part has an axial external reeding which is adjacent to the first head and has a slightly larger diameter than the first stem. The reeding interacts with a second seat that has a slightly smaller diameter. The second seat is formed at the free end of the female part, and is contiguous to the first seat.

REFERENCES:
patent: 910678 (1909-01-01), Hardin
patent: 1150114 (1915-08-01), Hays
patent: 1849069 (1932-03-01), Bridges
patent: 1909941 (1933-05-01), Finch
patent: 1936769 (1933-11-01), Olivet
patent: 2511051 (1950-06-01), Dzus
patent: 4033243 (1977-07-01), Kirrish et al.

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