Texas Instruments Corporation

Dale Lee Anderson

Artur Darbinyan

Disclosed herein are hand trucks for installing and removing water heaters. The disclosed water heater hand trucks enable a single person to lift the water heater onto a platform and to keep the water heater above the water heater pan during installation and removal. The disclosed hand trucks generally include a main platform and a wheel frame. A water heater is strapped to the main platform which has curved legs at the bottom with rubber landing feet. This design is used to keep the water heater above a water heater pan while lifting the water heater into position. This avoids crushing the pan with the water heater. The handles at the upper section of the main platform have adjustable positions. These handles can be opened up to an outward position to provide leverage, which can be advantageous when access to the platform is limited from a frontal approach.

Water heater hand trucks

The present disclosure provides for a recirculating flow controller that is operably coupled to a flow switch and to a recirculation pump. The recirculating flow controller determines that hot water has begun to flow by way of the connection with the flow switch. In response, the recirculating flow controller activates the recirculation pump to circulate hot water from a water heater. The recirculating flow controller can activate the recirculation pump for a predetermined duration. The flow switch can be configured to sense flow in a hot water line connected to a water heater. The flow switch can be activated by turning on any hot water faucet connected to the water heater.

Controlling hot water recirculation

A method of testing semiconductor devices includes placing a plurality of semiconductor devices in a carrier assembly and performing at least one testing operation on the plurality of semiconductor devices while they remain inside the carrier assembly.

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Fallbrook, CA, United States of America

Dale Lee Anderson