Delta Systems, Inc.

Ted Wetzel

Arthur James Harvey

David A Straka

Harlin J Trefz

Michael Eric Liedtke

A control circuit for a lawn tractor having an engine and a power take off driven implement. The control circuit includes an inhibit circuit component for preventing operation of a power take off driven implement with the tractor in reverse. Two versions of the inhibit circuit are disclosed, one grounds an engine magneto and a second disables an electric clutch for coupling the power take off to the driven element. The circuit includes first and second override switches and an override circuit component that allows operation of a power take off driven implement while the lawn tractor is in reverse after the first and second override switches are activated in a proper order by a tractor operator.

Reverse operation safety circuit

A magnetic latching switch. The switch includes a pair of switch terminals, a switch actuator, an electromagnet and a biasing member. The switch actuator is manually moveable from a first position where the switch terminals are in a first state to a second position where the switch terminals are in a second state. The electromagnet selectively applies a magnetic field. Applying the magnetic field with the electromagnet when the switch actuator is in the second position maintains the switch actuator in the second position. The biasing member is coupled to the switch actuator such that the biasing member automatically returns the switch actuator from the second position to the first position when the magnetic field is removed.

Electromagnetic latching switch

An engine with an integral actuator for a vehicle having an implement needing control. The engine includes a crank shaft, and a pump in a housing and an actuator that extends from the housing. The pump is operably connected to the crank shaft to produce a flow of fluid, such as oil, from the pump to the actuator. A valve is operably connected to the pump or the actuator to selectively move the actuator.

Engine with integral actuator

A hydrostatic transmission with an integral actuator for a vehicle having an engine and a frame. The assembly includes a transmission housing for connection to a vehicle frame, a shaft for coupling the hydrostatic transmission to an output of a vehicle engine, a pump driven by the shaft and an actuator operatively coupled to the pump that is attached to the transmission housing.

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Mayfield, OH, United States of America

Ted Wetzel