Patent ID: 7063293

Claim:
A roller device for a movable point of frog, comprising a sliding strip, a double-armed lever( 10 ), said double-armed lever ( 10 ) being pivotable about a pivot bearing ( 12 ) arranged in a support ( 13 ) connected with a stationary part of a switch, said double-armed lever ( 10 ) comprising a first arm ( 9 ) and a second arm ( 18 ), and at least one roller ( 11 ) mounted on the first arm ( 9 ) of said double-armed lever ( 10 ), wherein said second arm ( 18 ) faces away from said at least one roller ( 11 ) and is pivotable against a spring ( 19 ) with adjustable spring power, and wherein said pivot bearing ( 12 ) is arranged between said spring ( 19 ) and said at least one roller ( 11 ).