Abstract: A system and method for conditioning turf at of one or more golf course areas includes an aeration subsystem having subsurface aeration conduits for aerating the area, and an air blower unit in fluid communication with the aeration conduits configured to provide one of a vacuum in a vacuum mode and air under pressure in a pressure mode in the conduits. A control module is provided which responds to a directive for controlling operation of the aeration subsystem in response to sensing environmental parameters. The control module operates the blower in repetitive cycles of intermittent operation in one of the vacuum mode and pressure mode wherein each cycles includes a blower-on and blower-off mode. The blower-on mode operates the blower units for a first time interval and the blower-off mode ceases operation of the blower units for a second time interval during each cycle.

Abstract: A system and method for conditioning turf at of one or more golf course areas includes an aeration subsystem having subsurface aeration conduits for aerating the area, and an air blower unit in fluid communication with the aeration conduits configured to provide one of a vacuum in a vacuum mode and air under pressure in a pressure mode in the conduits. A control module is provided which responds to a directive for controlling operation of the aeration subsystem in response to sensing environmental parameters. The control module operates the blower in repetitive cycles of intermittent operation in one of the vacuum mode and pressure mode wherein each cycles includes a blower-on and blower-off mode. The blower-on mode operates the blower units for a first time interval and the blower-off mode ceases operation of the blower units for a second time interval during each cycle.

Abstract: A pipe coupling member comprising a collar member, flanges disposed on the collar member for connecting the collar member a support member, the collar member and the support member being adapted cooperatively to substantially encircle a first pipe member, lugs disposed on the collar member for connecting the collar member to a collar assembly substantially encircling a second pipe member, and elongated protrusions extending inwardly from an inside surface of the collar member and adapted to engage an external surface of the first pipe member.

Abstract: A Coriolis-type mass flow meter which uses two parallel, omega-shaped conduits and deduces mass flow rate from changes in the phase difference of signals from sensors at the outboard curved portions of the conduits which measure the relative positions of the conduits' sizes.

Abstract: A mechanical dial indicating gauge or meter that, without mechanical loading, optoelectronically detects and encodes the pointer position as a digital signal by use of a technique of distributed point position latching. Counter means drives a circuit which cylically sequentially lights LED's along a scale and the count is latched that corresponds to current counter position when a detector on the scale pointer is activated during the sequential lighting. This latched count provides the digital signal of pointer position. This digital signal may then by transmitted to remote indicators, controllers, computers, and/or may be compared to preset values yielding set point outputs. An electrical lead for the detector includes a spiral loosely surrounding the pointer stem.