US3708649A - Automatic blanket integral control - Google Patents

Automatic blanket integral control Download PDF

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Publication number
US3708649A
US3708649A US00126464A US3708649DA US3708649A US 3708649 A US3708649 A US 3708649A US 00126464 A US00126464 A US 00126464A US 3708649D A US3708649D A US 3708649DA US 3708649 A US3708649 A US 3708649A
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US
United States
Prior art keywords
control
blanket
switch
layer
outer portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00126464A
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English (en)
Inventor
G Crowley
A Berenson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Application granted granted Critical
Publication of US3708649A publication Critical patent/US3708649A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout

Definitions

  • ABSTRACT A control for an electrical appliance such as an electric blanket which is integrally formed with the blanket such that the temperature of the blanket may be controlled by the user without using conventional controls requiring electrical leads extending from the blanket to a control placed on a night stand.
  • the control of the present invention is small and of light weight and does not interfere with the comfort of the user and is always handy for adjustment by the user.
  • the control has waterproof seals so that the blanket may be washed or dry-cleaned without damaging the control and in a modified form the control is detachable connected to the blanket so that it may be removed for washing or dry-cleaning of the blanket.
  • Thepresent invention eliminates the remote control of the conventional electric blanket in that the control is integrally formed with the blanket at a convenient location so that it is readily available to the user.
  • the control may be mounted in one of the upper corners of the blanket, for example.
  • Some double blankets require two controls and a pair of integral controls may be formed in the blanket and mounted in the upper portions where they are readily available to the user.
  • the elimination of the extension cords between the blanket and the control provides a more compact, comfortable unit and removes the obstruction of the extension cord required in conventional electric blankets.
  • the integral control of the invention may be permanently attached to the blanket and may be provided with an O-ring seal about the temperature regulating shaft so that the blanket may be washed or dry-cleaned with the control in place.
  • a modified form of the invention provides a detachable control that may be removed for washing and dry-cleaning of the blanket.
  • FIG. I is a plan view of an electric blanket with the control of this invention mounted therein;
  • FIG. 2 is a partially cut-away and sectional view taken through the control
  • FIG. 3 is a sectional view of the control of the tion
  • FIG. 4 is a partially cut-away view of a modification of the invention.
  • FIG. 5 is a plan view of the connecter plate of the modified form of the invention.
  • FIG. 6 is a sectional viewof a modification of the invention.
  • FIG. 7 is a plan view of the control of the embodiment shown in FIG. 6.
  • FIG. 1 illustrates an electric blanket designated generally as 10 according to this invention.
  • the blanket has a fabric portion II which is formed in two layers as shown in the sectional view of FIG. 2 with a top layer 11a and a bottom layer 11b.
  • Heating element 12 is mounted between the the top and lower layers 11a and 11b, respectively.
  • a plurality of thermostats l3a-l3h are mounted in the heating'element 12 at various locations so as to prevent local overheating in the blanket.
  • the integral control of the invention designated generally as 14 is mounted in the blanket as for example adjacent a corner as shown in FIG. 1.
  • the integral control 14in addition to eliminating the need for a control attached to the blanket with an extension cord also replaces one of the thennostats which would normally be mounted in the portion of the blanket where the present invention is mounted.
  • a power plug 18 is connected to the heating element 12 by leads 22 and 23 and has connecting terminals 19 and 21 that are adapted to be received in' a plug of a power cord that may be connected to a suitable power source as for example 1 I0 volts. It is to be realized that the plug 18 may be mounted near the portion of the blanket which is received over the foot of the bed so that the power cord which attaches'to the plug 18 is not in the way of the occupant of the bed. As a matter of fact, the power cord may pass from the foot of the bed under the bed to a power plug near the head of the bed.
  • the lead 22 from the plug 18 connects to the heating element 12 and the lead 23 of the plug 18 connects to the control 14 through the thermostat 13c.
  • Lead 24 connects to the control 14 and provides power for an indicating light window 16 that might be a small neon bulb.
  • the control 14 has an on-off switch and temperature regulating knob 15. The top of the control 14 is designated by numeral l7.
  • FIGS. 2 and 3 illustrate the control 14 in section. It is to be noted that the lower layer 11b of the blanket is continuous beneath the control 14 and the upper layer Ila is formed with a generally rectangular opening and the control 14 is received in the opening and attaches to the upper layer Ila about the opening.
  • FIG. 2 it is seen that the top 17 of the control is attached to a flange 27 which bears against the layer 11a and a bottom portion 51 of the control is formed with a flange 26 and an upwardly extending portion 28 which is received within the downwardly extending portion 50 of the top member 17 and is sealed thereto.
  • the flanges 27 and 26 clamp the edge of the upper layer 1 la of the blanket to lock the control 14 to the blanket.
  • the conductors 23, 24 and 20 pass through openings formed in the lower portion 51 and into the confines of the control as shown. It is to be realized that the heating elements and the conductors 23, 24 and 20 lie between the upper and lower layers 11a and 11b of the blanket.
  • the knob 15 is supported on a shaft 36 which passes through a sleeve 31 formed with a groove 32 in which an O-ring seal 33 is mounted so as to provide a liquid seal to prevent liquid from passing through the sleeve about the shaft 36.
  • a cam 37 is mounted on the lower end of the shaft 36 and engages a bi-metallic strip 46 which has one end attached to a suitable support connected to the housing of the control and carries a contact 48 on a free end thereof.
  • a mating contact 49 is connected to the bottom 51 of the housing and conductor 20 is connected to the contact 49.
  • Conductor 24 passes through the lower portion 51 of the housing and is connected to an indicator light 41 mounted to the upper portion 17 of the housing.
  • the other side of the indicator light socket is connected to a lead 42 which is connected to an on-off switch 39 that has an actuating button 44 engageable with a projection 38 connected to the cam 37.
  • the other side of the on-off switch 39 is connected to the bi-metallic strip 46.
  • Lead 25 which is connected through the thermostat l3e to lead 23 is connected to the bi-metallic strip 46.
  • the heating element 12 will be cycled on and off in response to the action of the bi-metallic strip 46 which when heated moves the contact 48 out of engagement with contact 49.
  • the temperature of the blanket is controlled by the position of the cam 37 which controls the position of the bi-metallic strip 46.
  • the blanket may be set at high, low or medium temperature settings.
  • the integral control of this invention eliminates one or more of the protective thermostats installed in the blanket because it monitors the temperature of the blanket at a location where a thermostat would normally be installed in a conventional blanket having a control attached with an extension cord. Thus, at least one of the thermostats is eliminated with the present invention.
  • FIGS. 4 and 5 illustrate a modification of the invention which allows integral controls to be detachably removed from the blanket as for example during washing or dry-cleaning.
  • a generally rectangular plate of insulating material 55 is attached to the upper layer 11a of the blanket by suitable brads 52 and 53.
  • Female connecters 54, 56 and 57 are mounted in the plate 55 and receive leads 20, 24 and which are mounted between the upper and lower layers 11a and 111;, respectively.
  • the control 58 of the invention is formed with a flange 61 and has a lower plate 69 in which snaps 62 and 63 are mounted which may be detachably connected to the upper ends of the rivets 52 and 53.
  • the upper ends of the rivets may comprise male snap members which snap into the female snap members 62 and 63.
  • the control 58 also has male contacts 64, 66 and 67 which are receivable in the female contacts 54, 56 and 57 of the plate 51.
  • the internal structure of the control 58 may be the same as the internal structure of the control illustrated in FIGS. 2 and 3 with male contact 67 electrically connected to one contact of the bi-metallic control and contact 66 connected to the other contact of the bimetallic control and to the on-off switch and with con tac ⁇ t 64 connected to the indicator light 59 of the contro
  • the control .58 may be removed from the blanket when it is desired to wash or dry-clean the blanket by merely pulling upwardly relative to FIG. 4 so that the female snaps 62 and 63 disengage the upper ends of the members 52 and 53.
  • the electrical contacts 64, 66 and 67 move out of their mating sockets 54, 56, and 57.
  • control 58 may be reconnected to the blanket by merely inserting the contacts 64, 66 and 67 into their mating sockets and snapping the snaps 62 and 63 onto the upper ends of the members 52 and 53.
  • control illustrated in FIGS. 2 and 3 need not be removed during washing or dry-cleaning because the O-ring seal 33 prevents liquid from passing intothe control as it is laundered or dry-cleaned.
  • the controls of this invention may be small and thin so that they do not interfere with the comfort of the user.
  • the user may turn the blanket on or off with the knob 15 at any time by merely rotating the knob 15 until the desired temperature is obtained.
  • the indicator 16 indicates if the blanket is on at all times.
  • FIGS. 6 and 7 illustrate a further modification of the invention wherein the control may be removed from the blanket.
  • a generally rectangular-shaped member is mounted between upper and lower blanket layers 11a and 11b. Opening 81 is formed in member 80 at one end thereof and an aligned opening 82 is formed in upper blanket layer 11a and conductors 20', 24 and 25 extend therethrough.
  • a U-shaped member 83 has end portions 84 and86 and fits over the top blanket layer 11a and locks into the rectangular member 80.
  • An electrical female socket 87 is attached to portion 86 and conductors 20, 24 and 25 are connected thereto.
  • the removable control 88 is rectangularly shaped and has three male prongs 89, 90 and 91 that mate with the female socket 87.
  • a notch 92 is formed in the other end of control member 88 and portion 84 has a lip 93 which is receivable within the notch 92.
  • a spring 98 biases the control away from member 83.
  • the upper end 94 of portion 84 extends above the blanket layer 11a for a distance sufficient to allow an operator to engage it with his thumb and unlock the control 88 from the member 83.
  • the control 88 has an on-off and thermostat setting knob 96.
  • a window 97 provides light to index the knob
  • the member 88 is inserted into the member 83 with the prongs 89, 90 and 91 in engagement with the socket 87 and thus are connected to leads 20, 24 and 25.
  • the lip 93 engages notch 92 to hold the control in place.
  • the control may then be used to control the heating element of the blanket.
  • the end 94 is moved so that the lip 93 is removed from notch 92 and the control is lifted from the blanket.
  • this invention provides new and novel integral control and eliminates the conventional controls of the prior art which were connected to the blanket by an extension cord.
  • An electrical appliance comprising:
  • said inner portion formed with a flange which bears against the inner surface of said one layer about said opening so that said outer and inner portions clamp said control to said one layer;
  • said heating element electrically connected to said on-off switch and said bi-metallic switch.
  • An electrical appliance according to claim 1 including a recess formed between said shaft and said control means and said O-ring mounted in said recess.
  • An electrical appliance according to claim 1 including an indicator mounted in said outer portion and connected to said on-off switch and said bi-metallic switch within said control.
  • An electrical appliance according to claim 1 comprising a control knob mounted on said control shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
US00126464A 1971-03-22 1971-03-22 Automatic blanket integral control Expired - Lifetime US3708649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12646471A 1971-03-22 1971-03-22

Publications (1)

Publication Number Publication Date
US3708649A true US3708649A (en) 1973-01-02

Family

ID=22424963

Family Applications (1)

Application Number Title Priority Date Filing Date
US00126464A Expired - Lifetime US3708649A (en) 1971-03-22 1971-03-22 Automatic blanket integral control

Country Status (4)

Country Link
US (1) US3708649A (enrdf_load_stackoverflow)
JP (1) JPS5122433B1 (enrdf_load_stackoverflow)
CA (1) CA937274A (enrdf_load_stackoverflow)
GB (1) GB1363486A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008221A1 (de) * 1979-03-05 1980-09-18 Sunbeam Corp Schutzvorrichtung fuer eine elektrische heizdecke
US4626657A (en) * 1983-05-06 1986-12-02 Matsushita Electric Industrial Co., Ltd. Electric heating appliance
GB2229328A (en) * 1989-03-14 1990-09-19 Plantron Ab Heating arrangement for a seat
WO2009092618A1 (de) * 2008-01-25 2009-07-30 Therm-Ic Products Gmbh Kleidungsstück mit heizeinrichtung
US20130087544A1 (en) * 2011-10-07 2013-04-11 Therm-Ic Products Gmbh Nfg. & Co. Kg Article of clothing comprising an operating part
DE102012110368A1 (de) * 2012-10-30 2014-04-30 Chien-Chou Chen Temperaturregelungsmodul für eine Heizdecke
US20160302262A1 (en) * 2015-04-09 2016-10-13 Weistech Technology Co., Ltd. Heating pad

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537223A (en) * 1976-07-07 1978-01-23 Sanyo Electric Co Ltd Speaker diaphragm
JPS5719692U (enrdf_load_stackoverflow) * 1980-07-08 1982-02-01
CN112021891A (zh) * 2020-09-29 2020-12-04 浙江肯特科技股份有限公司 便于夜间使用的触摸调节型电热毯

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2215042A (en) * 1939-03-27 1940-09-17 Knapp Monarch Co Heating pad
US2508101A (en) * 1948-10-01 1950-05-16 Gen Electric Switch to be built into a heating pad or similar device
US2537376A (en) * 1947-12-19 1951-01-09 Inst Divi Thomae Foundation Electric blanket
US2588926A (en) * 1951-02-01 1952-03-11 Gen Electric Temperature responsive control circuit
US2866072A (en) * 1957-01-09 1958-12-23 Jet Heet Inc Thermal blanket circulating and control means
US3422244A (en) * 1965-05-10 1969-01-14 Peter Lauck Electric blanket with a temperature responsive control circuit
US3437792A (en) * 1967-10-31 1969-04-08 Stevens & Co Inc J P Electrical heating device with temperature control means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2215042A (en) * 1939-03-27 1940-09-17 Knapp Monarch Co Heating pad
US2537376A (en) * 1947-12-19 1951-01-09 Inst Divi Thomae Foundation Electric blanket
US2508101A (en) * 1948-10-01 1950-05-16 Gen Electric Switch to be built into a heating pad or similar device
US2588926A (en) * 1951-02-01 1952-03-11 Gen Electric Temperature responsive control circuit
US2866072A (en) * 1957-01-09 1958-12-23 Jet Heet Inc Thermal blanket circulating and control means
US3422244A (en) * 1965-05-10 1969-01-14 Peter Lauck Electric blanket with a temperature responsive control circuit
US3437792A (en) * 1967-10-31 1969-04-08 Stevens & Co Inc J P Electrical heating device with temperature control means

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008221A1 (de) * 1979-03-05 1980-09-18 Sunbeam Corp Schutzvorrichtung fuer eine elektrische heizdecke
US4281237A (en) * 1979-03-05 1981-07-28 Sunbeam Corporation Safety circuit for electric bedcover
US4626657A (en) * 1983-05-06 1986-12-02 Matsushita Electric Industrial Co., Ltd. Electric heating appliance
EP0148271A4 (en) * 1983-05-06 1987-04-07 Matsushita Electric Ind Co Ltd Electric heater.
GB2229328A (en) * 1989-03-14 1990-09-19 Plantron Ab Heating arrangement for a seat
GB2229328B (en) * 1989-03-14 1993-10-20 Plantron Ab Improvements in or relating to a heating arrangement for a seat
WO2009092618A1 (de) * 2008-01-25 2009-07-30 Therm-Ic Products Gmbh Kleidungsstück mit heizeinrichtung
US20110049117A1 (en) * 2008-01-25 2011-03-03 David Macher Clothing piece with heating device
US8664571B2 (en) * 2008-01-25 2014-03-04 Sidas Central Gmbh Clothing piece with heating device
US20130087544A1 (en) * 2011-10-07 2013-04-11 Therm-Ic Products Gmbh Nfg. & Co. Kg Article of clothing comprising an operating part
DE102012110368A1 (de) * 2012-10-30 2014-04-30 Chien-Chou Chen Temperaturregelungsmodul für eine Heizdecke
DE102012110368B4 (de) 2012-10-30 2014-08-21 Chien-Chou Chen Temperaturregelungsmodul für eine Heizdecke
US20160302262A1 (en) * 2015-04-09 2016-10-13 Weistech Technology Co., Ltd. Heating pad

Also Published As

Publication number Publication date
JPS5122433B1 (enrdf_load_stackoverflow) 1976-07-09
GB1363486A (en) 1974-08-14
CA937274A (en) 1973-11-20

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JPS603836Y2 (ja) 電気アイロン
JPS6310123Y2 (enrdf_load_stackoverflow)