Swing door hinge

• US 5,077,864 A
• Filed: 12/27/1990
• Issued: 01/07/1992
• Est. Priority Date: 12/27/1990
• Status: Expired due to Fees

• Current Assignee: Junzaburo Kawasaki
• Original Assignee: Junzaburo Kawasaki
• Inventors: Kawasaki, Junzaburo
• Primary Examiner(s): SPRUILL, ROBERT
• Application Number:
  US07/634,372
• Time in Patent Office: 376 Days
• Field of Search: 16/277, 16/280, 16/281, 16/278, 16/284, 16/286, 16/296, 16/298, 16/304, 16/305, 16/291, 16/293
• US Class Current: 16/278
• CPC Class Codes: E05D 11/1064 with a coil spring perpendicular to the pivot axis
• CPC Class Codes: E05D 15/54 for opening both inwards and outwards
• CPC Class Codes: E05D 3/022 allowing an additional lateral movement, e.g. for sealing
• CPC Class Codes: E05D 3/10 with non-parallel pins
• CPC Class Codes: E05F 1/1253 with a compression spring
• CPC Class Codes: E05Y 2201/638 Cams; Ramps
• CPC Class Codes: E05Y 2900/11 for industrial buildings
• CPC Class Codes: E05Y 2900/132 Doors

Abstract

A swing door hinge is provided comprising a first hinge member having a projection of approximately rectangular block shape and provided with at least two engaging recesses, the first hinge member being intended to be mounted to either a wall frame or a swing door, and a second hinge member having at least two engaging arms inserted into respective engaging of the first hinge member for pivotal movement and guide openings provided in the engaging arms. The second hinge member, which is also intended to be mounted to the wall frame or the swing door whichever does not carry the first hinge member, has pivot pins mounted in the guide openings and yieldingly urged by respective springs in the inward direction. Each pivot pin is inserted at its front end into a respective engaging recess of the first hinge member and pivotably mounted to a shaft which is installed in such a position of the projection that the distance thereof from the front end of the projection is smaller than the distance thereof from each side end of the projection.

Claims

1. A swing door hinge comprising:

a first hinge member having a projection of approximately rectangular block shape provided with engaging recesses, which is intended to be mounted onto either a wall frame or a swing door, the first hinge member having a rear end for being received on a mounting surface of a wall frame or swing door, opposite thereto a front end defined by a surface of the projection most remote from the rear end of the first hinge member, and a pair of side ends;

a second hinge member including a second hinge body of channel shape, the channel shape being constituted of a pair of mutually parallel side walls connected by an end wall, the end wall having an inner face facing into a channel defined by said face and respective inner faces of the side walls and having an outer face arranged to come into surface contact with the front end surface of the projection of the first hinge member, pairs of engaging arms extended from the outer face of the end wall, each pair forming an approximately U-shaped form and being received in a respective one of the engaging recesses of the first hinge member for pivotal movement, and guide openings provided in the engaging arms to extend across the second hinge body, said second hinge member being intended to be mounted to the wall frame or the swing door whichever does not carry the first hinge member;

pivot pins each slidably mounted in a respective one of the guide openings of the second hinge member;

a shaft installed in such a position of the rectangular projection of the first hinge member that the distance thereof from the front end of the projection is smaller than the distance thereof from each of the side ends of the projection and on which the pivot pins are pivotably mounted, the second hinge member being provided with passage means through which the shaft passes and which is so configured as to permit displacement of the second hinge member radially with respect to the shaft;

and springs each provided within the second hinge member for urging a respective one of the pivot pins away from the rear end of the first hinge member, each of the side ends of the projection of the first hinge member having a surface which together with the front end surface of the projection includes an angle of less than 90°

, whereby the door can be opened more than 90°

in either of its swing directions from a closed position of the door whereupon the springs hold the door in an open position with the outer face of the end wall of the channel of the second hinge member being pressed against one of the side ends of the first hinge member by action of the springs and the door automatically swings to its closed position by action of the springs when the door is manually moved from being opened more than 90°

to being opened less than 90° and

then released.