Ritchie Engineering Company, Inc.

Other

Ronald A Plasek

Ajit Ramachandran

Keith Sliger

Daniel J Toolan

The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refrigerant pumped to the compressor which, in turn, assists to cool the compressor head. The flashing of liquid refrigerant to vapor also deters liquid transfer into the compressor enhancing performance thereof. The vapor passages within the discriminator, cylinder head and/or manifold are sized for receipt of spring actuated ball's to open and/or close the vapor passages during suction and/or discharge of refrigerant vapor or liquid by the compressor.

Vacuum sensor

Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus

Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor

Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus

An edging and trimming apparatus for a lawn sprinkler head includes an elongate rotary shaft carrying an annular rotary blade at a lower end thereof. The opposite upper end of the shaft is releasably interconnected to a rotary auger motor. The motor drives the shaft axially and rotates the blade to perform edging and trimming of the grass surrounding a standard sprinkler head.

Apparatus for trimming and edging grass around a lawn sprinkler head

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Lakeville, MN, United States of America

Ronald A Plasek