Land vehicles – Skates – Runner type
Patent
1995-09-25
1996-04-23
Johnson, Brian L.
Land vehicles
Skates
Runner type
280 2811, 280809, A63C 710
Patent
active
055096832
ABSTRACT:
A ski brake assembly (21, 21a) for snow skis (24) or snow boards (24a). The ski brake assembly includes a framework (22) to which a snow-engaging braking blade assembly (26, 26a) is mounted for movement between a retracted position and a plurality of braking positions. The braking blade (26, 26a) is driven by an electric motor (36) through a blade drive assembly (51) formed to displace the blade (26, 26a) in response to operation of the motor (36). The drive assembly (51) and motor (36) are formed to hold the braking blade (26, 26a) in a selected one of a plurality of braking positions against the snow when the manually-operated switch assembly (42, 42a) is released. The control circuit (39) is coupled to the switch assembly (42, 42a) so as to switch polarity of the motor (36) for driving the motor (36) in opposite directions. Moreover, the electrical circuit (39) terminates operation of the motor (36) substantially immediately on release of the switch (42, 42a) so that, in combination with a wormgear drive (52) and reduction gears (62), the braking blade (26, 26a) is stopped immediately and held at virtually any selected braking position.
REFERENCES:
patent: 2194979 (1940-03-01), Jett
patent: 3794339 (1974-02-01), Smolka
patent: 3909024 (1975-09-01), Salomon
patent: 4152007 (1979-05-01), Smith
patent: 4279433 (1981-07-01), Petaja
patent: 4342468 (1982-08-01), Beyl
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