US2565390A

US2565390A - Electric mattress heater

Info

Publication number: US2565390A
Application number: US135435A
Authority: US
Inventors: Mitnowsky David
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-12-28
Filing date: 1949-12-28
Publication date: 1951-08-21
Anticipated expiration: 1968-08-21

Description

Aug. 21, 1951 D. MITNOWSKY- 2,565,390

ELECTRIC MATTRESS HEATER Filed Dec. 28, 1949 INVENTOR.

ATTORNEY Patented Aug. 21, 1951 UNITED STATES PATENT OFFICE ELECTRIC MATTRESS HEATER David Mitnowsky, Newark, N. J.

Application December 28, 1949, Serial No. 135,435

1 Claim.

My invention relates generally to mattress heaters and specifically to that type having electrically energized heat generating elements.

It is among the objects of my invention to provide a mattress heater that is safe.

It is another object of my invention to provide a mattress heater that generates heat and readily disseminates it throughout the mattress.

Yet another object of my invention is to provide a mattress heater that has a large radiation area.

Among the objects of my invention is to provide a mattress that is simple in form, durable, inexpensive, easy to construct and maintain.

These objects and advantages, as well as many other objects and advantages, may be attained by the device illustrated in the drawings, in which:

Figure 1 is a View in perspective of my mattress heater with the top plate raised;

Figure 2 is a view in perspective with the top plate closed; and

Figure 3 is a plan view showing the mattress heater in a mattress.

Referring now to the drawings in detail, my mattress heater has a top radiation plate II and a bottom radiation plate I2. These plates are attached together by hinges I3 affixed to their longitudinal edges. The plates II, I2 are constructed of flexible metallic sheets, although other materials may be used. The plates are provided with many radiation holes I4 to permit the circulation of air between them.

Resistance wires I5 are enclosed between the plates. These wires have characteristics which will cause them to give 011 heat when electrically energized. Mounted on and completely covering each wire I5 are glass beads I6. They serve to insulate the wires and yet permit the radiation of the heat generated. Covering the beads are tubes I! formed of good heat conducting material such as copper, aluminum, or the like. The tubes I! are fastened to one of the plates l2, at appropriate intervals, by cleats [8. The ends of the wires are connected to a plug I9 which will receive another plug connected to the power source.

The tubes I1 are arranged as will appear from Figure 1. Between the tubes, a brace or rectangular slat is attached to one of the plates I I, I2 by hinges 21. A slotted handle is attached to the slat 20 by two screws 26 so that it may slide outwardly to the position indicated in Figure 2.

In use, a mattress 2| is constructed with its equatorial springs 22 split into equal halves as will appear in Figure 3. The mattress heater is placed between the halves of the springs 22. A zippered opening 23 in the mattress cover 24 gives access to the handle 25 and also permits the introduction of the power line.

When the slat 20 is down, as in Figure 1, it may be raised to the position shown in Figure 2, whereupon greater air circulation is permitted between the plates 1 I, I2. This also permits the removal of the sag that may occur in the center of the mattress, due to the flattening of the springs 22. A thermostat may be included within the mattress 2| to retain the degree of heat within the desired range.

I have referred to glass beads I6 as covering the wires. These beads need not necessarily be of glass but may be of some material which is a good conductor of heat. Preferably, they should be circular in form so as to keep the Wires from contacting any parts of the plates II, I2 and yet have the greatest radiating area to permit the heat to be freely circulated to all corners of the mattress.

Many other changes may be made in the construction, selection and arrangement of the various parts comprising my mattress heater, all within the scope of the appended claim, without departing from the spirit of the invention.

I claim:

A mattress heater comprising a resilient top plate, a resilient bottom plate pivotally attached to the top plate along its longitudinal edges, a brace pivotally attached to one of the plates, a handle slidably attached to the brace, a resistance wire disposed between the plates, beads covering the wire, a tube of heat conducting material covering the beads, means attaching the tube to one of the plates, and a plurality of holes in the plates.

DAVID MITNOWSKY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 700,494 Hinman May 20, 1902 873,317 Landry Dec. 10, 1907 926,695 Frost June 29, 1909 1,429,865 Friedman Sept. 19, 1922 1,835,602 Kercher et a1. Dec. 8, 1931 1,957,401 Wiedenmann May 1, 1934 1,984,008 Baker Dec. 11, 1934 1,989,502 Becker Jan. 29, 1935 1,994,759 Dermott Mar. 19, 1935 2,162,021 Kidwell June 13, 1939 2,215,042 Howard et a1 Sept. 17, 1940 2,287,569 Premack June 23, 1942 FOREIGN PATENTS Number Country Date 711,070 France June 16, 1931 716,129 France Dec. 15, 1931