Container closure cap with self-sealing slot
First Claim
1. A closure cap positionable over the open top of a container for retaining a liquid sample to be tested by a test card inserted into the container, said closure cap having an elongated slot therein to accommodate a thin flat rectangular panel test card member inserted therethrough into the container to contact the liquid sample to be tested, means mounted on said cap and adjoining said slot for defining a self-sealing slit having abutting edges and disposed substantially centrally of said slot, said slit abutting edges being normally closed but expansible responsive to pressure exerted by a panel test card inserted therethrough and maintaining contact with said test card so as to wipe the faces and edges of said test card to form a seal with the card when the card is within said slot.
3 Assignments
0 Petitions
Accused Products
Abstract
A container for retaining a liquid sample to be tested is closed by a removable closure cap having a slot therein to receive a flat rectangular panel test card member inserted through the slot into the container. A flexible resilient member is mounted adjoining to the closure cap slot and has a slit therein with abutting edges through which the test card is passed. After the test card has been withdrawn, the abutting edges contract to their normally closed position to prevent the leakage of any liquid through the slot when the container is being handled. During withdrawal of the test card through the slot the abutting edges wipe excess liquid sample from the test card.
59 Citations
21 Claims
- 1. A closure cap positionable over the open top of a container for retaining a liquid sample to be tested by a test card inserted into the container, said closure cap having an elongated slot therein to accommodate a thin flat rectangular panel test card member inserted therethrough into the container to contact the liquid sample to be tested, means mounted on said cap and adjoining said slot for defining a self-sealing slit having abutting edges and disposed substantially centrally of said slot, said slit abutting edges being normally closed but expansible responsive to pressure exerted by a panel test card inserted therethrough and maintaining contact with said test card so as to wipe the faces and edges of said test card to form a seal with the card when the card is within said slot.
-
17. A process for forming a self-sealing slot in a container closure cap comprising the steps of depositing a thermoplastic elastomer material on the edges of a pre-existing slot in the closure cap in such a manner as to define beads on the upper and lower surfaces of the edges of the slot and a thin resilient membrane extending from the beads over the slot, and forming in the thin membrane a slit of such a width that the edges of the slit are abutting to sealingly close the slit.
-
18. A process for forming a self-sealing slot in a container closure cap comprising the steps of depositing a thermoplastic elastomer material on the edges of a pre-existing slot in a closure cap in such a manner as to define beads on the upper and lower surfaces of the edges of the slot and a thin resilient membrane extending from the beads over the slot, the resilient membrane being of such a thickness as to permit penetration thereof by an edge of a thin flat rectangular panel member to define an elongated slit the edges of which are sufficiently resilient and near to each other to sealingly close the slit after removal of the panel member from the slit.
- 19. A closure cap positionable over the open top of a container for retaining a liquid sample to be tested by a test card inserted into the container, said closure cap having an elongated slot therein to accommodate a thin flat rectangular panel test card member inserted therethrough into the container to contact the liquid sample to be tested, said cap being made of a resilient elastomer material such that the edges of said slot maintain contact with the faces and edges of a test card inserted therethrough to form a seal with the card when the card is within the slot.
Specification