Maytag Corporation

Amana Refrigeration, Inc.

Whirlpool Corporation

Other

Bethlehem Steel Corporation

Eugene H Schuchert

Forrest F Wing

Douglas A Pohl

James M Grace

Dean A Martin

David M Christensen

Troy Michael Anderson

Garnett S Helming

John G Speer

Samuel B McGuire, Sr

Richard N Walker

Roger C Miersen

Adel F Bastawros

Leo J Deistler

A side-by-side refrigerator includes a cabinet defining fresh food and freezer compartments, each having upper and lower sections which vary in width and volume along with corresponding fresh food and freezer doors that vary in width. The fresh food and freezer compartments are spaced by an offset mullion assembly against which the doors seal. The offset mullion assembly includes a first longitudinal member, a second longitudinal member, a brace having first and second legs and a laterally extending portion and a cosmetic cover. The offset mullion assembly provides strength to the cabinet while providing an aesthetically pleasing and uniform sealing surface for the fresh food and freezer doors.

Refrigerator with multi-piece mullion having stepped offset

A side-by-side refrigerator includes a cabinet defining fresh food and freezer compartments, with each compartment having upper and lower sections which vary in width and volume and corresponding fresh food and freezer doors that vary in width. The fresh food and freezer compartments are spaced by a mullion against which the doors seal. The mullion is bowed such that the longitudinal curvature of the mullion compensates for thermal bowing of the fresh food and freezer doors, thereby assuring a proper seal between the mullion and the fresh food and freezer doors.

Refrigerator with bowed mullion

A method of assembling a refrigerator cabinet assembly including creating a shell by bending a single sheet of material to form side walls interconnected by a top wall, forming front face portions by in-turning front edge portions of the side and top walls, creating a flange assembly including at least a front flange which leads to a return flange that extends to a rear flange, and inserting first and second reinforcing members behind the rear flange so as to be arranged at spaced locations against the rear flange and one of the side walls. The reinforcing members function to increase the structural integrity of the shell while including tab structure for mounting and/or shell deformation preventing purposes.

Method of assembling a refrigerator cabinet

A refrigerator cabinet assembly includes a shell formed from a pre-painted material having first and second laterally spaced upstanding side walls which are interconnected by a top wall, with each of the first and second side and top walls including a front edge portion leading to a flange assembly defining a liner receiving cavity. The flange assembly includes a front flange leading to a return flange that extends to a rear flange and terminates in a bent flange. The cabinet assembly further includes a plurality of corner and stanchion reinforcing members secured behind respective return flange sections. The reinforcing members function to increase the structural integrity of the shell while including tab structure for mounting and/or shell deformation preventing purposes.

Localized reinforcement system for refrigerator cabinet

A side-by-side refrigerator includes fresh food and freezer compartments, each having upper and lower sections which vary in width and volume. Doors, each having corresponding upper and lower sections that vary in width, are provided to selectively seal the fresh food and freezer compartments respectively. Each door includes an outer lateral portion pivotally mounted to the side-by-side refrigerator about a substantially vertical axis and an inner lateral portion defined by laterally offset sections that form the varying width portions. In accordance with the invention, a door brace member is provided at the laterally offset sections. The door brace member includes first and second substantially vertical portions interconnected by a lateral portion that is shaped to conform to and reinforce the laterally offset sections of the door to increase the overall structural integrity of the door.

Door brace for a refrigerator cabinet assembly having varying width compartment doors

An embossed cold rolled metal (e.g. steel) sheet for use in manufacturing appliances and method of making same wherein the surface attributes of the embossed sheet are optimized to improve corrosion resistance of the painted product, promote uniform paint coverage of the sheet surface, reduce paint consumption, enable repainting without loss of pattern crispness, and provide consistent and aesthetically pleasing appearance of the painted sheet. The embossed sheet has a plurality of plateaus and impressions defined therein in a manner such that the arithmetic average surface roughness (Ra) of the plateaus is from about 50 to 100 microinches, the maximum impression depths over a given area are from about 0.0025 to 0.0032 inches, the impression walls define maximum slopes of from about 8-17 degrees, and there are no sharp corners or ridges at the transition points between plateaus and impressions.

Embossed cold rolled steel with improved corrosion resistance,

Method and apparatus for bending serpentine heat exchanger tubes using a split bend die having a relatively short upper die section with a straight back end. After the tube is bent in conventional manner using a clamp die and a pressure die, the bend die is split along a shaft and rotated through a predetermined angle to position the straight back end substantially parallel to a straight segment of the tube at the output of the bend die. The input segment of the tube is then moved next to the shaft in preparation for rotating above the input segment to raise the output segment above the upper section of the bend die. Such lateral motion reduces the segment spacing required for clearance of the upper section. Other features for reducing the spacing are providing an indentation on the shaft, angling the back end with respect to the sides to provide a minimum length, and truncation an upper portion along the back end.

Method and apparatus for bending tubes using split bend die

Method and apparatus for bending metal tubes such as for furnace heat exchangers. After the bend die is rotated 180.degree. to make a bend, an upper section of the bend die is split from a lower section, and the upper section is then rotated approximately 90.degree.. In such manner, a portion of the upper section is displaced laterally to vacate a region directly above the lower section. Therefore, in moving the tube forwardly to a new location for a subsequent bend operation, a portion of a previous bend passes through the vacated region thereby enabling sequential bend angles that are less restricted than without rotating the upper section of the split die.

Method for bending tubes using split die

The method of bending relatively thin wall tubing to form a tubular heat exchanger that has relatively tight bends with controlled wrinkles. For example, 1.75-inch outer diameter stainless steel tube may have a wall thickness of 0.035 inches and be bent using a controlled-wrinkle bend die to a 180.degree. bend having a centerline radius of 2.5 inches. The relatively high tube collapse that results from bending in such manner without the use of a ball mandrel does not detract from performance of the heat exchanger in a relatively low flow rate furnace application.

Tubular heat exchanger and method for bending tubes

The method of bending relatively thin wall tubing to form a tubular heat exchanger that has relatively tight bends with controlled wrinkles. For example, 1.75-inch outer diameter stainless steel tube may have a wall thickness of 0.035 inches and be bent using a controlled-wrinkle bend die to a 180.degree. bend having a centerline radius of 2.5 inches.

Growing community of inventors

Iowa City, IA, United States of America

Eugene H Schuchert