초록 ▼

A swingable door assembly and a hinge assembly for urging the swingable door assembly to a closed position is provided. The hinge assembly comprises a torsion spring which may be an elongate torsion rod, which may be preloaded with a predetermined amount of torsion force so that the associated swing

A swingable door assembly and a hinge assembly for urging the swingable door assembly to a closed position is provided. The hinge assembly comprises a torsion spring which may be an elongate torsion rod, which may be preloaded with a predetermined amount of torsion force so that the associated swingable door assembly is urged to a closed position with respect to a casing, such as a refrigerated display case. The hinge assembly includes a ratchet pin connected to the torsion spring. First and second ratchet anchors may be mounted at a predetermined distance from each other on the ratchet pin. A fixed ratchet is secured to the ratchet between the first and second ratchet anchors. One of the first and second ratchet anchors is secured to the swingable door assembly while the other one of the ratchet anchors remains unsecured whereby the secured ratchet anchor is free to rotate in one direction relative to the fixed ratchet and the unsecured ratchet anchor upon application of a torsion force to preload the torsion spring.

대표청구항 ▼

A hinge assembly for a swingable door, said hinge assembly comprising: a torsion spring; a ratchet assembly including an elongate ratchet pin connected to said torsion spring; first and second ratchet anchors mounted at a predetermined distance from each other on said elongate ratchet pin, each of s

A hinge assembly for a swingable door, said hinge assembly comprising: a torsion spring; a ratchet assembly including an elongate ratchet pin connected to said torsion spring; first and second ratchet anchors mounted at a predetermined distance from each other on said elongate ratchet pin, each of said first and second ratchet anchors including at least one end having a plurality of teeth; a fixed ratchet having a first end and a second end and being secured to said ratchet pin between said first and second ratchet anchors, said first and second ends of said fixed ratchet having a plurality of teeth arranged in abutment with said teeth at respective ends of said first and second ratchet anchors; and securing means for selectively securing one of said first and second ratchet anchors to an associated swingable door while the other one of said first and second ratchet anchors remains unsecured with respect to the door whereby said secured one of said first and second ratchet anchors will rotate relative to said fixed ratchet upon preloading of said torsion spring.