US 5,314,362 A · Throttle opening limiting system for a marine propulsion unit

Abstract

A throttle opening limiting system is provided for a marine propulsion unit comprising a throttle, a manually operated throttle control device and an intermediate linkage arrangement operatively connecting the manually operated throttle control device to the throttle. The intermediate linkage arrangement further comprises a means for setting a distinct and different maximum obtainable throttle opening position for each of a forward, a neutral and a reverse operative state of the marine propulsion unit. The throttle opening limiting system is fully openable in the forward operative state, is limited to an intermediate position in the reverse operative state, and is limited to a smaller opening position in the neutral operative state than the intermediate position of the reverse operative state. The throttle opening limiting system is capable of preventing overspeed engine rotation in both the neutral and reverse transmission operative states, while nevertheless securing the necessary thrust required for proper running of the craft in the reverse operative state.

Claims19

Dependent claims

A throttle opening limiting system for an engine of a marine propulsion unit, comprising:

a manually operated transmission control system for shifting between forward, neutral and reverse operative states;
and further, a throttle, a manually operated throttle control device and an intermediate linkage arrangement operatively connecting said manually operated throttle control device to said throttle, said intermediate linkage arrangement further comprising a throttle opening limiting mechanism operable for setting a distinct and different maximum obtainable throttle opening position for each of a forward a neutral and a reverse operative state of said marine propulsion unit;
wherein said throttle opening limiting mechanism includes a blocking element and a first lever;
and further including a cowling member surrounding said engine;
wherein said blocking element and said first lever are located within said cowling member;
wherein said blocking element is a stopper member which is arranged for linear movement along a generally vertical direction;
and wherein said first lever is disposed along a generally horizontal plane and is arranged for movement in a generally horizontal fashion within its plane of disposition.

4 more elements

A throttle opening limiting system for an engine of a marine propulsion unit, comprising:

a manually operated transmission control system for shifting between forward, neutral and reverse operative states;
and further, a throttle, a manually operated throttle control device and an intermediate linkage arrangement operatively connecting said manually operated throttle control device to said throttle, said intermediate linkage arrangement further comprising a throttle opening limiting mechanism operable for setting a distinct and different maximum obtainable throttle opening position for each of a forward a neutral and a reverse operative state of said marine propulsion unit;
wherein said throttle opening limiting mechanism includes a blocking element and a first lever which are mounted in unobstructed direct proximity to said engine;
wherein said blocking element is a stopper member which is arranged for linear movement along a generally vertical direction;
and wherein said first lever is disposed along a generally horizontal plane and is arranged for movement in a generally horizontal fashion within its plane of disposition.

2 more elements

Dependencies are inferred from the claim text.

Throttle opening limiting system for a marine propulsion unit

Life of this patent

Throttle opening limiting system for a marine propulsion unit

Life of this patent

Abstract

Claims19