Door

• US 4,637,167 A
• Filed: 02/11/1985
• Issued: 01/20/1987
• Est. Priority Date: 08/19/1983
• Status: Expired due to Fees

• Current Assignee: Termofrost Sweden AB
• Original Assignee: Termofrost Sweden AB
• Inventors: Svensson, Torsten
• Primary Examiner(s): KANNAN, PHILIP
• Application Number:
  US06/700,314
• Time in Patent Office: 708 Days
• Field of Search: 49/386, 49/501, 49/388, 312/138 R, 312/139
• US Class Current: 49/386
• CPC Class Codes: A47F 3/043 Doors, covers A47F3/0434 takes precedence
• CPC Class Codes: E05F 1/123 with a torsion bar
• CPC Class Codes: E05Y 2900/202 for display cabinets, e.g. for refrigerated cabinets
• CPC Class Codes: E05Y 2900/31 for refrigerators
• CPC Class Codes: F25D 23/028 Details
• CPC Class Codes: F25D 2500/02 Geometry problems

Abstract

A door for refrigerating and freezing chambers, comprising a door frame supporting one or more glass panes for exposing refrigerated or frozen goods in said chamber through the door. According to the invention, the door frame comprises a section (6) capable to support the glass (4) associated with the door (1) along only one vertical edge (7) of the glass (4), at which edge (7) the door (1) is intended to be hingedly suspended in a door case. An inner longitudinal cavity (10) is located along the entire length of the section (6), in which cavity (10) a torsion spring (11) extends substantially along the entire length of the section (6), which torsion spring (11) is capable to be locked at one end relative to the section (6) and at its other end relative to said door case.

Claims

1. A door for refrigerating and freezer chambers, comprising a door frame, which supports at least one glass pane for exposing through the door refrigerated or frozen goods in said chamber, which door frame at one vertical edge (7), via an elongate first frame section, is intended to be hingedly suspended in a door case (2) and which door frame and door case cooperate with a torsion spring (11) having two ends, said torsion spring (11) being locked at one of its ends relative to the door frame and at the other of its ends relative to the door case, wherein nipples or the like connect to the torsion spring at its upper end (12) and its lower end (13), said nipples or the like, formed as journals (17,18), cooperate with associated bearing means (20, 21) in the door case (2) to thereby pivotally suspend said door;

characterized in that means in said door rigidly secure said one vertical edge (7) of said first door frame section (6) to and along only one edge of the glass pane in a U-shaped groove (8) provided along the entire length of said first frame section (6) to provide the sole support for the door;

said first frame section comprising an inner longitudinal cavity (10) provided along the entire length of the section, in which cavity said torsion spring extends along substantially the whole length of the section (6); and

the remainder of the door frame comprises at least one thin non load bearing strip (25) mounted along each of the remaining three edges of the glass pane.

2. A door as defined in claim 1, characterized in that the torsion spring (11) has square cross-section.

3. A door as defined in claim 1 or 2, characterized in that a handle (5) for opening the door is attached directly to the glass pane located farthest away from the refrigerating or freezing chamber.