Патент USA US2405887код для вставки
Am@ §39 .È ' Q. HFFMAN REFRIGERATOR Do'oR OPENER Filed sept. 5, 1944 _ INVENTOR, 'Umm/Hw” 2,405,887 Patented Aug. 13, 1946 N UNÃTED STATS OFFICE 2,405,887 REFRIGERATOR DOOR OPENER Carl Hoffman, De Kalb, Ill. Application September 5, 1944, Serial No. 552,789 1 claim. (Cl. 268-72) l My present invention, in its broad aspect, has to do with means for creating a powerful operat ing leverage to open refrigerator doors of the type which are ordinarily so heavy as to require great strength and force to open. Such doors are in many instances equipped with what are known as “Pressure type” door closers. My invention, more particularly, contemplates the use of a pivoted lever arm fulcrumed to exert a powerful opening leverage with a minimum of eifort, and it may be 10 mounted either on the inside or on the outside of a refrigerator. Other important objects and advantages of 2 Since many refrigerator doors are so heavy as to make handling very difficult, I have provided a T-shaped plate 6 mounted on the door flush with the edge, and which is formed with an enlarge~ ment 'I tapped with a thread 8 to receive a thread ed pivot bolt 9 on which is mounted a lever arm IU. The lever arm I0 has a cut-away portion II at its end and is tapped to receive a threaded pivot bolt I2 on which is mounted a roller I3. The fulcrum of the lever arm (the pivot bolt 9) is relaL tively close to the roller, and the lever arm itselfv is provided with a relatively long handle I4 as shown in Figure 1. The handle portion I4 of the lever arm may be of simple tubular metal con my invention are (l) to provide a simple lever with a roller contact to exert the required power, 15 struction and has a hand grip I5, and may be slightly curved, for convenience as at IS. A plate (2) to provide a device which may be used to I1 is mounted on the door frame in the path of either push a door` open from the inside, or exert the roller I3 when the arm is operated to exert an opening leverage on the doo-r from the outside, opening leverage between the door and frame to and (3) to provide a simple, efficient, practical and inexpensive device which may be applied to 20 handily and easily open the door irrespective its size or weight, by mounting my lever arm on the conventional types of refrigerators. Other and inside Wall of a refrigerator or refrigerator door equally important objects and advantages will be frame and mounting the plate I1 on the inside of apparent from the following detailed description the door opening pressure of the lever on the and drawing, but it is to be understood that the broad scope of my invention should only be de 25 door may be provided. From the foregoing, it is believed that the oper termined with reference to the appended claims. ation and advantages of my invention will be ap In the drawing wherein I have illustrated a parent, but manifetsly, changes in form, size, preferred form of my invention: shape, proportion, arrangement and construction Figure 1 is a perspective view of a refrigerator door on which my device is mounted, and which 30 of parts are permissible provided same fall within the purview of what is claimed. shows its operation; I claim: Figure 2 is a detailed plan view of the lever arm, A door opening device, comprising a door frame roller, and fulcrum, and and door, a plate mounted on the outer face of Figure 3 is a detailed edge view of the lever arm, 35 the door, a boss carried by the outer face of the roller and fulcrum. Y plate and extending parallel with the face of the In the drawing wherein like characters of ref door beyond the edge thereof, a lever having a erence are used to designate like or similar parts bolt passing loosely therethrough adjacent one throughout the several views: The numeral I designates a refrigerator door end and screwed into said boss, a lateral pivot bolt of well known type, and 2 the frame, to which the 40 carried by the inner end of the lever and parallel door is attached by hinges 3, and provided with with the ñrst mentioned bolt, and a roller carried by said bolt and having a rolling contact with a closure ñttings 4, and a handle 5. All of these plate carried by the door frame~ parts are conventional and form no part of my present invention. CARL HOFFMAN.