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US 7,452,252 B2Granted
Rowing- and sculling-boat electric-switch operation
OwnerJohn Frayn Ewansinventor
Life of this patent
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OwnerJohn Frayn Ewansinventor
Estimating the term…
Operation of an electric microswitch 14 for timing or other purposes during rowing is brought about by the rower moving the heels 8 of his/her shoes 3 in opposite sideways directions transitorily. A unit 10 containing the switch 14 involves two plates 19,20 that are tied by cords 11 to the two heels 8 respectively within the foot-well 6 of the boat, so as to slide relative to one another against a spring bias when the heels 8 move apart. The microswitch 14 operates in response to the sliding to energize an LED 16 for sending a light pulse via fibre-optic cable 23 to a timing unit 24. A modified unit 10 includes a wireless transmitter 25 in place of the LED 16, and an alternative modification involves two parallel fibre-optic cables 26,27 from the unit 24 and an optical block 32. The block 32 is moved in response to the heel-movement from where light transmitted by the unit 24 down the cable 26 is not reflected back via the cable 27, to where the light is reflected back up the cable 27 from reflective surfaces 36,37 of block 32. Light reflected back to the unit 24 via the cable 27.
A method of operating an electric switch during rowing of a rowing boat, wherein operation of the switch is effected by foot-movement of a rower of the boat, shoes having heels are worn on the rower's feet, and the shoes are coupled via the heels to a unit located between the shoes, the unit being responsive to movement of the heels of the shoes relative to one another in opposite directions to operate the electric switch,
An apparatus, for use on a rowing boat, comprising foot-receiving means for receiving a rower's feet, an electric switch, and means coupled to the foot-receiving means to respond to relative movement between the received feet for operating the electric switch, wherein the foot-receiving means comprises a pair of shoes, and the means coupled to the foot-receiving means is a unit attached to the two shoes of the pair to respond to movement of the two shoes in opposite directions relative to one another, the unit includes first and second members that are movable relative to one another, the first and the second members are coupled to the two shoes respectively to move relative to one another in response to relative movement apart of the two shoes, and the electric switch is carried by the first member for operation in response to the relative movement between the first and the second members, and
An apparatus, for use on a rowing boat, comprising foot-receiving means for receiving a rower's feet, an electric switch, and means coupled to the foot-receiving means to respond to relative movement between the received feet for operating the electric switch, wherein the foot-receiving means comprises a pair of shoes, and the means coupled to the foot-receiving means is a unit attached to the two shoes of the pair to respond to movement of the two shoes in opposite directions relative to one another, the unit includes first and second members that are movable relative to one another, the first and the second members are coupled to the two shoes respectively to move relative to one another in response to relative movement apart of the two shoes, and means responsive to the relative movement between the first and the second members to transmit a signal for operation of the electric switch,
Dependencies are inferred from the claim text.