Hinge construction for container covers

A hinge adapted for use on the closure member of a container for releasably holding the closure member in an open position relative to the body of the container to permit access to the container;

• said hinge comprising:
• a pair of interfitting leaves each having a base defining a rear face and an opposed front face;
• a boss extending outwardly from the front face of each of said leaves and having a longitudinally extending opening therethrough, the bosses on the interfitting leaves being in axial alignment with each other and having axially aligned longitudinally extending openings therein;
• a hinge pin received in said axially aligned openings for pivotally connecting said hinge leaves to each other;
• a cam surface on one of said leaves and a latch member on the other of said leaves in opposed relation to said cam surface and adapted to ride along said cam surface in contact relation thereof, said cam surface having a high point thereof in engagement with said latch member at a position of the closure member intermediate open and closed positions of the closure member, and a relatively flat cam surface portion adjacent said high point for contacting said latch member in the open position of the closure member for releasably holding the closure member in an open position.

A molded plastic hinge mounted between the cover and body of a container for releasably holding the cover in an open generally vertical position relative to the container body to permit access to the container;

• said hinge comprising:
• a pair of interfitting leaves each having a base defining a rear face and an opposed front face;
• a boss extending outwardly from the front face of each of said leaves and having a longitudinally extending opening therethrough, the bosses on the interfitting leaves being in axial alignment with each other and having axially aligned longitudinally extending openings therein;
• a hinge pin fitting within said axially aligned openings for pivotally connecting said hinge leaves to each other;
• said boss on one of said leaves defining a cam surface thereon and the other of said leaves having an opposed latch member defining an extending lip adapted to ride along said cam surface in contact relation thereto, said cam surface having a high point thereof in engagement with said lip at a position of the cover intermediate its open and closed positions, and a relative flat cam surface portion adjacent said high point for contact of said lip in the open generally vertical position of the cover for releasably holding the cover in an open position, said lip being resilient and urged outwardly upon contact with the high point of said cam surface upon movement of the cover between open and closed positions.

In a container having a body and a lid over the body to permit access to the body;

• an improved hinge mounting the lid for pivotal movement between a closed general horizontal position over the container and an open generally vertical position;
• said improved hinge comprising:
• a pair of interfitting leaves each having a base defining a rear face and an opposed front face;
• a boss extending outwardly from the front face of each of said leaves and having a longitudinally extending opening therethrough, the bosses on the interfitting leaves being in axial alignment with each other and having axially aligned longitudinally extending openings therein;
• a hinge pin received in said axially aligned openings for pivotally connecting said hinge leaves to each other;
• and
• a cam surface on one of said leaves and a latch member on the other of said leaves in opposed relation to said cam surface and adapted to ride along said cam surface in contact relation thereto, said cam surface having a high point thereof in engagement with said latch member at a position of the cover intermediate its open and closed positions, and a relatively flat cam surface portion adjacent said high point for contacting said latch member in the open generally vertical position of the cover for releasably holding the cover in an open position.

In a container having a body and a closure member mounted on the body for movement between an open position to permit access to the body and a closed position to restrict access to the body;

• an improved hinge mounting the closure member for pivotal movement between the closed and open positions comprising:
• a pair of interfitting leaves each having a base defining a rear face and an opposed front face;
• and
• cooperating latch members on said leaves in engagement with each other at the closed portion of the closure member to releasably restrain swinging movement of the closure member to open position and responsive to a predetermined outward force to permit swinging movement to the open position;
• said cooperating latch members at the open position of the closure member releasably restraining a inward swinging movement of the closure member to closed position and responsive to a predetermined inward force to permit swinging movement of the closure member to closed position.

A molded plastic hinge mounted between a closure member and an open sided body for releasably holding the closure member in an open position relative to the body to permit access to the body;

• said hinge comprising:
• a pair of interfitting leaves each having a base defining a rear face and an opposed front face;
• a boss extending outwardly from the front face of each of said leaves and having a longitudinally extending opening therethrough, the bosses on the interfitting leaves being in axial alignment with each other and having axially aligned longitudinally extending openings therein;
• a hinge pin fitting within said axially aligned openings for pivotally connecting said hinge leaves to each other;
• said boss on one of said leaves defining a cam surface thereon and the other of said leaves having an opposed latch member defining an extending lip adapted to ride along said cam surface in contact relation thereto, said cam surface having a high point thereof in engagement with said lip at a position of the closure member intermediate its open and closed positions, and a relative flat cam surface portion adjacent said high point for contact of said lip in the open generally vertical position of the closure member for releasably holding the closure member in an open position, said lip being resilient and urged outwardly upon contact with the high point of said cam surface upon movement of the closure member between open and closed positions.