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US 5,071,017 AGranted
Closure cap construction with slitted flexible diaphragm
OwnerGene Stullinventor
Life of this patent
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OwnerGene Stullinventor
Estimating the term…
A valving-type closure having a resilient diaphragm provided with a portion having a through slit for the passage of fluids, the slit portion being adapted to bulge and open the slit in response to fluid pressure applied to one side thereof. The slit portion has abuttable, cooperable structures on one side, which come into forcible abutment and act to physically open the slit as the portion bulges. Preferably the abuttable structures are in the form of rings molded on the underside of the diaphragm. The slit through the diaphragm also extends through the ring, thereby forming two semi-circular ring segments. The ring segments in turn form abutment shoulders that pivot the walls of the slit away from one another when the diaphragm is bulged, thereby resulting in a more pronounced spreading force being applied to the walls, and increasing the size of the opening formed by the slit.
A valving-type closure comprising a resilient diaphragm having a potion provided with a through valving slit which has opposed engaging walls for restricting the passage of fluids therethrough, said slitted portion being adapted to bulge and open said slit in response to fluid pressure applied to one side thereof, and said slitted portion having protruding abuttable, cooperable means on said one side, for separating the walls of said slit to open the same, said means coming into forcible abutment and acting to physically open the slit as the said slitted portion bulges.
A dispensing cap for a hand-held container, comprising in combination:
A valving-type closure comprising a resilient diaphragm having a portion provided with a through slit for the passage of fluids therethrough, said slit portion being adapted to bulge and open said slit in response to fluid pressure applied to one side thereof, and said portion having protruding abuttable, cooperable means on said one side, which some into forcible abutment and act to physically open the slit as the said portion bulges, said cooperable means comprising a raised ring having a cut-through portion which presents abuttable surfaces.
A dispensing cap for a hand-held container, comprising in combination:
A valving-type closure comprising a resilient diaphragm having a portion provided with a through slit for the passage of fluids therethrough, said slit portion being adapted to bulge and open said slit in response to fluid pressure applied to one side thereof, and said portion having protruding abuttable, cooperable means on said one side, which come into forcible abutment and act to physically open the slit as the said portion bulges,
Dependencies are inferred from the claim text.