Insert type member for use in a flexible type pump diaphragm

An improved insert type member for utilization in a flexible type diaphragm portion of a pump which will enable such flexible type diaphragm portion of such pump to be provided with a substantially uniform non-obtrusive surface area that will be positioned in such pump for intimate contact with a predetermined type material to be pumped, said improved insert type member comprising:

• (a) a first disc-like portion, said first disc-like portion having both a first predetermined size and a first predetermined configuration;
• (b) a second disc-like portion, said second disc-like portion having both a second predetermined size and a second predetermined configuration, said second disc-like portion being secured adjacent one surface thereof to a first surface of said first disc-like portion, said second disc-like portion extending from said first surface of said first disc-like portion for a predetermined distance and said second disc-like portion being disposed substantially in a center portion of said first surface of said first disc-like portion of said improved insert type member;
• (c) a plurality of apertures formed through said first disc-like portion, said plurality of apertures having both a third predetermined size and a third predetermined configuration, said plurality of apertures providing an overall predetermined open area through said first disc-like portion for receiving a preselected rubber compound therein and thereby significantly improve bonding of said improved insert type member to such flexible type diaphragm portion of such pump;
• and
• (d) a securing means engageable at least with said second disc-like portion for securing said improved insert type member to an elongated piston rod-like member disposed for reciprocal type movement within such pump.