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US 4,009,678 AGranted
Multiple push-pull cable transmission apparatus
AssigneeBrunswick Corporation
InventorIrving William North
Life of this patent
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AssigneeBrunswick Corporation
InventorIrving William North
Estimating the term…
A racing boat is powered by a pair of pendent inboard-outboard drive units having inboard steering arms. A pair of push-pull cable units connect a forward located steering wheel unit to the arms. The cable units extend along opposite sides of the boat with the casing fixed at the steering wheel and the core wires secured to the opposite sides of the steering wheel and to the opposite steering arms. A power steering unit coupled to the one steering arm and having in input element. The adjacent cable unit has a threaded extension pipe with a fixed coupler connected to the power control input. A core rod is connected to the core, is slidably mounted in the pipe and is pivotally connected to the power steering link to transmit casing reaction forces to the power input. An adjustable rigid linkage includes a tie rod having adjustable ends pivotally connected to the anchor member on the extension pipes. The anchor member of the second cable unit is slidably mounted in a pivotally mounted support for generally linear movement. The rod directly interconnects the two anchor members to each other and to the power input for rapid power steering response. A second adjustable tie rod is pivotally connected to the arms and the core wires and is set to properly locate the steering arms.
In a powered mechanical motion transmission apparatus having oppositely movable input means for controlling a remote positioning element means through a first and a second push-pull means, each of said push-pull means including an outer guide means and an inner movable core means and having the guide means fixedly mounted at the first end and having means connecting the first end of the core means of the first and second push-pull means to the movable input means for opposite movement of the core means in response to a given movement of the movable input means, means connecting the opposite end of the core means to said remote positioning element means, a power means having a power input means, each of said core means establishing reaction forces on the corresponding guide means as a result of the movement of the core means, the improvement in the coupling of the guide means to the power input means comprising guide tie means interconnecting the power input means of said power means and each of the guide means of the first and second push-pull means, said guide tie means establishing a rigid interconnection therebetween to transmit all reaction forces of both of the said guide means to the power input means and thereby establish rapid response to any of said reaction forces on said guide means of both said first and second push-pull means.
In a powered mechanical motion transmission apparatus having oppositely movable input means for controlling a plurality of remote positioning load elements through a first and a second push-pull flexible cable means, each of said cable means including an outer flexible casing and an inner movable core wire of a high degree of longitudinal rigidity to transmit forces therethrough, said casing being fixedly mounted at the movable input means and having means connecting the first ends of the core wires of the first and second push-pull cable means to the movable input means for opposite movement of the core wires in response to a given movement of the input means, core wire connection means connecting the opposite ends of the core wires to first and second inputs of said remote positioning load elements, a power means coupled to position said load elements and having an input control means and adapted to be connected to the casing of a push-pull cable means and responsive to the reaction forces exerted on such casing as a result of the movement of the core wire, the improvement comprising casing tie bar means including a rigid linkage connecting the input control means of the power means to the casings of the first and the second push-pull cable means, said rigid linkage providing for direct transmission of all reaction forces of both of said casings to the power input control means and thereby establish rapid response to said forces.
A power steering mechanism for an outboard driven watercraft including a pair of transom-mounted pendent outboard drive units each of which includes a pivotal steering arm extending through the transom of the boat and having a steering means provided at the helm portion of the watercraft and connected to control the steering arms of the pendent units by simultaneously oppositely actuating a first and second push-pull cable means, said cable means each having an outer casing and an inner core wire, the improvement in the interconnection of the core wires of the push-pull cable means one each to each of said first and second pivot arms of the pendent drive units, comprising a power steering control means having a pivotal mounting means and including a pivotal coupling to one of said steering arms, said power steering control means having an input, an adjustable tension bar interconnected between said pivot arms and preset to place the core wires under tension for all positioning of the push-pull cable means, and rigid coupling means connected to the input of the power steering means and to each of the casings of the push-pull cable means to transmit reaction forces directly to the power steering control means from either or both of said casings.
Dependencies are inferred from the claim text.