Boat trolling valve safety device
US5538449A · kind A · utility
Inventor
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H21/213
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trolling valve safety device that locks or limits actuation of a boat engine throttle from its idle position during use of a trolling valve, and vice versa, preferably includes a rotating control plate having mounts for throttle cables so that throttle actuation requires plate rotation. This rotation can be limited by a cam slider which slides under force of trolling valve control cables and provides a cam member that inserts in control slots of the control plate. The cam member is positioned in a locking radial slot when the trolling valve is engaged and thereby locks or limits engine throttling. The cam member is positioned in a releasing arcuate position when the trolling valve is disengaged and thereby permits rotation of the plate and associated engine throttling. A stop pin can also extend from the plate to selectively permit or limit rotation of the plate by alignment or disalignment with a groove in the cam slider and can be adjustable to permit slight throttling during trolling valve use. A series of switches can also be provided to coordinate various engine safety devices and controls with the condition of the trolling valve and the throttle of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.