Apparatus and methods of forming a display case door and frame
First Claim
1. A frame for an opening in a refrigerated display case for receiving and supporting one or more doors for allowing access into the case, the frame comprising:
- a first wall extending rearwardly from a forward portion of the opening, a second wall extending from the first wall in a second direction and a third wall extending from the second wall in a direction different from the second direction to define a recess between the first, second and third walls;
a contact plate extending between the first and third walls closing the recess; and
wherein the first, second and third walls are formed from rolled steel and wherein at least one of the walls includes a bend in the wall.
7 Assignments
0 Petitions
Accused Products
Abstract
Perimeter frame rails and door frames rails are described for a more thermally efficient and cost-effective display case such as for refrigerated display cases. The frames are preferably formed from cold rolled steel. A perimeter frame may include first, second and third walls defining an opening or a recess that can be closed by a contact plate. A door for a refrigerated display case may include a glass unit and a forward portion extending inwardly from a perimeter frame edge portion toward an edge of the forward glass pane and a first side portion extends rearwardly to a groove. An insulating member insulates the door rail from the cold area and includes a portion engaging the groove. A glass door is also provided for a refrigerated display case having a first glass panel, a second glass panel, and low emissivity coatings on the inside surfaces of the first and second glass panels. One or more intermediate glass panels can also be included. Spacer assemblies are used to separate adjacent glass panels and preferably include a desiccant-embedded sealant. Preferably, little or no metal structures are used in the spacers.
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Citations
77 Claims
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1. A frame for an opening in a refrigerated display case for receiving and supporting one or more doors for allowing access into the case, the frame comprising:
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a first wall extending rearwardly from a forward portion of the opening, a second wall extending from the first wall in a second direction and a third wall extending from the second wall in a direction different from the second direction to define a recess between the first, second and third walls;
a contact plate extending between the first and third walls closing the recess; and
wherein the first, second and third walls are formed from rolled steel and wherein at least one of the walls includes a bend in the wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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20. A mullion for combining with a perimeter frame for an opening in a refrigerated display case for receiving and supporting one or more doors for allowing access into the case, the mullion comprising:
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at least first and second walls to define a recess between the first and second walls and formed from rolled steel and wherein at least one of the first and second walls includes at least one bend in the wall; and
a contact plate extending between the first and second walls closing the recess. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A door for a refrigerated display case, the door comprising:
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a glass unit including a forward glass pane and a rearward glass pane for allowing viewing of product within the display case;
a door frame for surrounding and supporting the glass unit;
the door frame being formed from rolled steel and including a perimeter frame edge portion and a forward portion extending inwardly from the perimeter frame edge portion toward an edge of the forward glass pane and a first side portion extending rearwardly from the perimeter edge portion and a second wall extending inwardly from the first side portion and a third wall together defining a groove; and
a plastic insulating assembly having at least one anchor portion extending into the groove. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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40. A glass door for a refrigerated display case, the door comprising:
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a first glass panel having in inside and an outside surface;
a low emissivity coating on the inside surface of the first glass panel;
a second glass panel having in inside and an outside surface;
a low emissivity coating on the inside surface of the second glass panel;
an intermediate glass panel between the first and second glass panels;
a first spacer assembly between the first and intermediate glass panels and a second spacer assembly between the intermediate and second glass panels wherein the first and second spacer assemblies are formed from warm edge spacer assemblies; and
a frame extending about and supporting at least one of the glass panels. - View Dependent Claims (52, 53)
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54. A glass door for a refrigerated display case, the door comprising:
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a first glass pane having an inside surface and an outside surface;
a second glass pane having an inside surface and an outside surface;
a low emissivity coating on at least one of the inside surfaces of the first and second glass panes;
a spacer assembly between the first and second glass panes and including a desiccant embedded sealant on an inside portion of the spacer assembly; and
a frame extending about and supporting the first and second glass panels. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A glass door for a refrigerated display case, the door comprising:
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a first glass panel having an inside and an outside surface;
a low emissivity coating on the inside surface of the first glass panel;
a second glass panel having an inside and an outside surface;
a low emissivity coating on the inside surface of the second glass panel;
a third glass panel extending between and spaced apart from each of the first and second glass panels;
first and second spacers, wherein the first spacer separates the first and third glass panels and wherein the second spacer separates the second and third glass panels, wherein at least one of the first and second spacers includes an inside portion formed from a desiccant-embedded sealant, a metal foil extending between and sealed to the adjacent glass panels, a second sealant on a side of the metal foil opposite the desiccant-embedded sealant and extending between the adjacent glass panels, and a polymeric structure having a hardness greater than a hardness of the second sealant; and
a frame extending around and supporting the first, second and third glass panes and including a hinge assembly for allowing the door to open and close. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
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67. A door for a refrigerated display case, the door comprising:
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a glass unit including a forward glass pane and a rearward glass pane for allowing viewing of product within the display case;
a door frame for surrounding and supporting the glass unit, at least one side of the door frame including a forward portion extending partly over a surface of the forward glass pane, a rearward portion extending inwardly toward the glass unit and rearward of the forward portion and a side wall extending between the forward portion and the rearward portion; and
an insulating portion engaging the rearward portion and extending from the rearward portion inwardly and contacting a surface of the rearward glass pane.
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Specification