Patent ID: 7175004

Claim:
A wheel simultaneous brake mechanism for stopping a first wheel and a second wheel at the same time, comprising: a first wheel engagement equipment provided at said first wheel and comprising: a first engaging member movable between a first engaged position in which said first engaging member engages with said first wheel and a first disengaged position in which said first engaging member does not engage with said first wheel, and a first spring arranged to urge said first engaging member to said first engaged position; an operating member connected to said first engaging member and operable to position said first engaging member selectively at said first engaged position and at said first disengaged position; a second wheel engagement equipment provided at said second wheel and comprising: a second engaging member movable between a second engaged position in which said second engaging member engages with said second wheel and a second disengaged position in which said second engaging member does not engage with said second wheel, and a second spring arranged to urge said second engaging member to said second engaged position; a connecting wire that connects said first and second engaging members directly to each other through said connecting wire in such a manner that when said operating member is operated so as to position said first engaging member at said first engaged position then said second engaging member is positively positioned at said second engaged position, and when said operating member is operated so as to position said first engaging member at said first disengaged position then said second engaging member is positively positioned at said second disengaged position, wherein said connecting wire is arranged in a tube and is connected and positively linked without any interposed spring to first and second connection portions that are integral and unitary with said first and second engaging members respectively, so that said connecting wire establishes a fixed predetermined length between said first and second connection portions so that a tensile force is always provided through said wire between said first and second engaging members; and a position holding device arranged and adapted to hold said second engaging member at said second disengaged position, when said operating member is operated so as to position said first engaging member at said first disengaged position; wherein said wire in said tube is arranged and connected so that by operating said operating member, said wire is operated so that said first and second springs urge said first and second engaging members to said first and second engaged positions.