Pressure switch
AssigneeArgus Machine Co. Ltd.
InventorJames Richard Ellett
Life of this patent
Estimating the term…
Abstract
A pressure actuated switch has a diaphragm mounted across a piston having a piston head. Movement of the piston under pressure variations acting on the diaphragm actuates the pressure switch. A support disc is provided for the diaphragm, the support disc being mounted between the diaphragm and the piston. The support disc is preferably made of a high tensile elastic material and has an outer annulus that extends beyond the piston head, an inner disc that is smaller in diameter than the piston head; and a flexible intermediate annulus cantilevered between the outer annulus and the inner disc.
Claims16
A pressure switch comprising:
- a housing;
- a piston guide mounted within the housing, the piston guide having an interior bore and a first end, the interior bore forming an opening at the first end;
- a diaphragm mounted on the piston guide across the opening;
- a piston slidable over a limited range within the interior bore under external fluid pressure acting on the diaphragm, the piston having a piston head;
- a mechanically operated switch operatively connected to the piston;
- a support disc for the diaphragm, the support disc being mounted between the diaphragm and the piston;
- and
- the support disc being made of a high tensile elastic material and the support disc comprising an outer annulus that extends beyond the opening, an inner disc that is smaller in diameter than the piston head, and a flexible intermediate annulus cantilevered between the outer annulus and the inner disc.
A pressure switch comprising:
- a housing;
- a piston guide mounted within the housing, the piston guide having an interior bore and a first end, the interior bore forming an opening at the first end;
- a diaphragm mounted on the piston guide across the opening;
- a piston slidable over a limited range within the interior bore under external fluid pressure acting on the diaphragm, the piston having a piston head;
- a mechanically operated switch operatively connected to the piston;
- a support disc for the diaphragm, the support disc being mounted between the diaphragm and the piston, the support disc being made of a high tensile elastic material and the support disc comprising:
- an outer annulus that extends beyond the opening;
- an inner disc that is smaller in diameter than the piston head;
- and
- a flexible segmented intermediate annulus cantilevered between the inner annulus and the outer disc on inner and outer sets respectively of circumferentially extending torsion bars.
Dependencies are inferred from the claim text.