The only sprayers available were
hand-operated, single-action pumps that shot the liquid out in spurts and with inadequate pressure to reach the tree tops.
Operator fatigue is minimal compared with other types of
hand-operated devices currently in use, according to Gravitational Energy Corp.
For its first application, GEC is introducing an easy-to-use,
hand-operated water pump and filtration system that needs no fuel or electricity, making it indispensible in the wake of natural disasters and struggling third world countries.
Such a community might be served by a community-level system, with water piped to convenient distribution points or into homes, or by
hand-operated tubewell pumps spread throughout the community.
The exhaust system also can be customized for use with
hand-operated crucible cranes and monorails.
Additionally, the enzymatically treated pasta dough has sufficient workability that it can be used in a hand-held and
hand-operated extrusion system which allows a consumer to prepare the actual pasta product in the home kitchen.
The Sizzix Sidekick is the portable, affordable companion to the Sizzix Machine, developed by ELLISON, a leading manufacturer of
hand-operated die-cutting equipment.
The AutoFlush[R] activates toilets and urinals, and can be installed in about two minutes without shutting off the water to replace a
hand-operated valve.
Proprietary pumps are small, versatile,
hand-operated transfer pumps that are safe for use with all commonly used laboratory and industrial chemicals.
The computers are of particular interest and predate the
hand-operated slide-and-circular computers of the pre-microchip era.
* Midwest Specialties will demonstrate the FlexArm, a
hand-operated tapping device that cuts threaded holes in plastics.
The Mrod-06-LL is an extremely small
hand-operated desalinator, providing one litre of fresh drinking water, from the sea, per hour.