US3927439A - Hinge - Google Patents

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Publication number
US3927439A
US3927439A US444116A US44411674A US3927439A US 3927439 A US3927439 A US 3927439A US 444116 A US444116 A US 444116A US 44411674 A US44411674 A US 44411674A US 3927439 A US3927439 A US 3927439A
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US
United States
Prior art keywords
rod
hinge
guiding
spring
nut
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
US444116A
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English (en)
Inventor
Wilhelm Gronbach
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.)
Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19732308361 external-priority patent/DE2308361A1/de
Priority claimed from DE19732317397 external-priority patent/DE2317397C3/de
Priority claimed from DE19732322967 external-priority patent/DE2322967A1/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3927439A publication Critical patent/US3927439A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/686—Rods, links
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/306—Application of doors, windows, wings or fittings thereof for domestic appliances for freezers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/024—Door hinges

Definitions

  • the hinge comprises a compression spring for balancing the weight of leaves which are hinged on a horizontal axis, such as covers, flaps or the like, particularly in refrigerating chests. One end of the compression spring bears under initial stress on the stationary hinge member.
  • the other end of the spring bears by means of the end of a spring-guiding rod, which supports the spring, on the second hinge member, which is secured to the leaf.
  • the lower end of the springguiding rod bears by means of a rocker on a knife edge bearing provided on the stationary hinge member.
  • the guiding rod is provided with coarse pitch screw threads at its end opposite to the slider.
  • the rocker carries a nut which has coarse pitch screw threads and is in threaded engagement with the lower end of the guiding rod.
  • This invention relates to'a hinge which comprises a compression spring for balancing the weight of leaves which are hinged on a horizontal axis, such as covers, flaps or the like, particularly in refrigerating chests, in which hinge one end of the compression spring bears under initial stress on the stationary hinge member, the other end of the spring bears by means of the end of a spring-guiding rod, which supports the spring, on the second hinge member, which is secured to the leaf, and the lower end of the spring-guiding rod bears by means of a rocker on a knife edge bearing provided on the stationary hinge member.
  • the spring-guiding rod carries at its upper end a slider, which consists of polyacetal resin or a material having similar properties and is guided by a cam face, which comprises a control cam face portion and a stressing cam face portion.
  • a slider which consists of polyacetal resin or a material having similar properties and is guided by a cam face, which comprises a control cam face portion and a stressing cam face portion.
  • Such hinge is designed to compensate the cosine-shaped turning moment of the cover throughout its opening movement. For this compensation, the spring force and spring characteristic must match the turning moment of the cover within fairly close limits. For this reason, different springs are required, which correspond to cover turning moments differing by increments of l kilogram-meter.
  • this object is accomplished according to the invention in that the guiding rod is provided with coarse pitch screw threads at its lower end and that the rocker carries a nut which has coarse pitch screw threads and is in threaded engagement with the lower end of the guiding rod.
  • the cam face comprising a control cam face portion and a stressing cam face portion in accordance with the German Patent Specification No. 1,708,350 a balancing of weights can be ensured only in a single position.
  • the hinge in accordance with the invention enables a balancing of weight in a larger range, which depends in each case on the thickness of the spring or springs and the weight of the leaf.
  • the hinge according to the invention has the further advantage that the number of springs to be kept on stock by the buyer are reduced. Besides, the need of adjusting the known'hinge to the actual cover turning moment is entirely eliminated.
  • the spring-guiding rod at its upper end with a slider, which consists of polyacetal resin or a material having similar properties and is guided by a cam face which comprises a control cam face portion and a stressing cam face portion and which is directly provided in the hinge member that is secured to the leaf.
  • the coarse pitch screw threads are multiple threads. These have the advantage of providing for a contact on alarge surface so that the desired function is maintained indefinitely in spite of the pressure contact between the faces of the threads during a displacement of the spring-guiding rod in its longitudinal direction.
  • the coarse pitch nut is made of plastics material, preferably of polyacetal resin.
  • Such coarse pitch nut does not take up moisture and for this reason is dimensionally stable. Besides, the nut resists oil and acid and in spite of its good clamping action is highly slidable.
  • the coarse pitch nut is held against rotation in the rocker and a washer is provided between the nut and the lower end of the spring.
  • the washer acts as a brake during a longitudinal movement of the guiding rod because the washer is carried along by the spring and the latter is rotated by the guiding rod owing to the frictional engagement.
  • the hinge according to the invention may be provided with a double brake if this is required.
  • the guiding rod is provided adjacent to the upper end of the spring with a bushing that consists of plastics material, preferably of polyacetal resin, and has an upper annular flange, which is embedded between two washers, the upper one of which bears on retaining cams on the guiding rod whereas the lower washer bears on the upper end of the spring.
  • the slider provided at the upper end of the springguiding rod and consisting of polyacetal resin or a material having similar properties has a curved recessed bearing surface, which engages a pin mounted in the second, movable hinge member. Because the upper end of the spring-guiding rod does not bear directly on a pivot pin mounted in the second hing member but a sliding surface bearing having a recessed curved bearing surface is interposed, a canting at the bearing is avoided whereas such canting is otherwise inevitable owing to manufacturing tolerances. Besides, there can be no frictional resistance due to such canting at the bearing.
  • opposite ends of the pivot pin are received by respective recesses in mutually opposite surfaces of the stationary hinge member and these mutually opposite surfaces are shaped so as to define the two end positions of the hinge.
  • FIG. 1 is a sectional view showing the hinge according to a first embodiment of the invention
  • FIG. 2 is an elevation showing the hinge according to this embodiment of the invention as viewed from the open side of the hinge housing
  • FIG. 3 is a sectional view showing a hinge according to another embodiment of the invention.
  • FIG. 4 is an elevation showing the hinge according to this embodiment of the invention as viewed from the open side of the hinge housing.
  • the hinge comprises a hinge member 1, which is secured to a leaf 2, and a stationary hinge member 3, which is secured to a base, e.g., of a refrigerating chest.
  • the hinge member 3 consists of a U-shaped housing, which is open on the side facing away from the refrigerating chest, and is secured to the refrigerating chest with the aid of openings 4, 5.
  • the movable hinge member 1 is secured to the leaf 2 by means of bores 6 to 9. It is readily apparent from FIG. 2 that the bores required for the fixation are exposed even when the hinge has been assembled so that it can be secured quickly and in a simple manner to the base and cover of the refrigerating chest.
  • the two hinge members are hingedly interconnected by a hinge pin 10.
  • a cam face 12 is provided directly in the hinge member 1 which is secured to the leaf 2.
  • the cam face 12 consists of a snapped-in stamping 13 of spring steel strip.
  • This cam face 12 serves to guide a slider 14, which consists of polyacetal resin and is provided with lateral guide flanges 15.
  • the slider 14 of polyacetal resin is mounted on the shank end 16 of a spring-guiding rod 17, which is rotatable about its axis in the slider 14.
  • 14 is a slider fitting, which consists of sheet metal and is inserted into the mold used to make the slider. This fitting is visible in the drawing only because the slider has a groove there.
  • the spring-guiding rod 17 is mounted in the stationary hinge member 3 at a point which is spaced by a distance depending on the initial stress of the spring 18 or the springs 18, 19 from the point where the other end of the rod is pivoted.
  • the embodiment shown by way of example comprises a knife-edge bearing 20, which supports a rocker 21.
  • the hinge according to the invention is designed like that of German Patent Specification No. 1,708,350.
  • the guiding rod 17 is provided with coarse pitch screw threads 22 at the end which is remote from the slider 14.
  • a nut 23 having coarse pitch screw threads is mounted on the rocker 21.
  • the lower end of the spring-guiding rod 17 is threaded in the coarse pitch nut 23.
  • the coarse pitch screw threads are multiple screw threads having a helix angle of about The specific helix angle will depend on the number of parallel threads, the area of the thread faces and on the height of the nut, i.e., on the clamping surface area.
  • the coarse pitch nut 23 consists of polyacetal resin. The nut is held against rotation in the rocker 21.
  • a washer 24 is provided between the nut 23 and the lower end of the spring 18 or of the springs 18, 19.
  • the hinge is provided with a dual brake.
  • the spring-guiding rod 17 is provided adjacent to the upper end of spring 18 or springs 18, 19 with a bushing 25 of plastics material, specifically polyacetal resin.
  • the bushing 25 has an upper annular flange 26, which is embedded between two washers 27, 28.
  • the upper washer bears on retaining cams 29, provided on the spring-guiding rod 17.
  • the lower washer bears on the upper end of the spring 18 or springs 18, 19.
  • FIG. 1 shows the hinge in closed condition.
  • the stressed spring 18 or springs 18, 19 force the slider 14 against the stressing cam face portion 31, which by means of the hinge pin 10 exerts an additional closing pressure on the leaf2 of the refrigerating chest.
  • the relaxing spring 18 or springs 18, 19 cause the slider 14 to move along the cam face 12 so as to ensure a balancing of masses.
  • Stops 33 and 34 are provided at respective ends of the cam face 12 and cooperate with the slider 14 and with the back of the spring-guiding rod 17 to define the fully open position of the leaf 2.
  • the hinge 34 is formed by bending in the hinge member 1 itself.
  • the fixing lugs 35, 36 formed with the bores 6 to 9 are bent at right angles from the legs of the hinge member 1.
  • the hinge pin 10 is mounted in a bearing sleeve 37 between the bores 6, 8 and 7, 9 of the fixing lugs 35, 36.
  • the coarse pitch screw threads 22 in conjunction with the coarse pitch nut 23 enable the control of the turning moments to be expected by springs in a number which is reduced to one-third. As has been mentioned hereinbefore, there is nevertheless no need for an adjustment in adaptation to the actual turning moment.
  • the hinge comprises a hinge member 101, which is secured to a leaf 102, and a stationary hinge member 103, which is secured to a base, e.g., of a refrigerating chest.
  • the hinge member 103 consists of a U-shaped housing, which is open on the side facing away from the refrigerating chest, and is secured to the refrigerating chest with the aid of openings 104, 105.
  • the movable hinge member 101 is secured to the leaf 102 by means of bores 106 to 109. It is readily apparent from FIG. 4 that the bores required for the fixation are exposed even when the hinge has been assembled so that it can be secured quickly and in a simple manner to the base and cover of the refrigerating chest.
  • the two hinge members are hingedly interconnected by a hinge pin 110.
  • the spring-guiding rod 111 is mounted in the stationary hinge member 103 at a point which is spaced by a distance depending on the initial stress of the spring 112 or the springs 112, 113 from the point where the other end of the rod is pivoted.
  • the embodiment shown by way of example comprises a knife-edge bearing 114, which supports a rocker 115.
  • the guiding rod 111 is provided with coarse pitch screw threads 116 at the end which is remote from the hinge pin 110.
  • a nut 117 having coarse pitch screw threads is mounted on the rocker 115.
  • the lower end of the spring-guiding rod 111 is threaded in the coarse pitch nut 117.
  • the coarse pitch screw threads are multiple screw threads having a helix angle of about 20. The specific helix angle will depend on the number of parallel threads, the area of the thread faces and on the height of the nut, i,e., on the clamping surface area.
  • the coarse pitch nut 114 consists of polyacetal resin. The nut is held against rotation in the rocker 115.
  • a washer 118 is provided between the nut 117 and the lower end of the spring 112 or of the springs 112, 113.
  • the hinge is provided with a dual brake.
  • the spring-guiding rod 111 is provided adjacent to the upper end of spring 112 or springs 112, 113 with a bushing 119 of plastics material, specifically polyacetal resin.
  • the bushing 119 has an upper annular flange 120, which is embedded between two washers 121, 122.
  • the upper washer bears on retaining cams 123, 124 provided on the spring-guiding rod 111.
  • the lower washer bears on the upper end of the spring 112 or springs 112, 113.
  • the springguiding rod 111 carries a sliding-surface bearing 125, which has a recessed curved bearing surface bearing on a pin 126, which is mounted in the second hinge member 101. Opposite ends of the pivot pin 126 are received by respective recesses 127 in mutually opposite surfaces of the U-shaped housing of the stationary hinge member 103. These recesses are shaped to define the two end positions of the hinge.
  • the hinge pin 110 is mounted in a bearing sleeve 129 between the bores 106, 108 and 107, 109 of the fixing lug 128.
  • the coarse pitch screw threads 116 in conjunction with the coarse pitch nut 117 enable the control of the turning moments to be expected by springs in a number which is reduced to one-third. As has been mentioned hereinbefore, there is nevertheless no need for an adjustment in adaptation to the actual turning moment.
  • a hinge adapted to balance covers or flaps or refrigerating chests comprising:
  • a movable leaf hinge member pivotally mounted on said stationary leaf hinge member
  • first means pivotally mounting one end of said guiding-rod on the stationary leaf hinge member and including nut means fixed to said stationary leaf hinge member with said one end of the rod being rotatably engaged with said nut means;
  • a pre-stressed compression spring mounted on ,said guiding-rod and bearing on one end against said abutment stop means and on the other end against 6 said nut means imposing an axial force on said guiding-rod;
  • said guiding-rod and said nut means defining mutually coacting means for braking movement of said guiding-rod during opening and closing of said hinge comprising a first set of coarse pitch screw threads defined on the outer periphery of the one end of said guiding-rod, and a second set of coarse pitch screw threads defined on the internal surface of said nut means, said sets being complementary and of the type having a helix angle in the order of 20 and being threadedly engaged forcing said guiding-rod to undergo a rotational braking movement when moving through said nut means.
  • a hinge according to claim 1 characterized in that the spring-guiding rod is provided at its abutting end with a slider, which comprises polyacetal resin said bearing surface further includes a cam face Which comprises a control cam face portion and a stressing cam face portion and which is secured in the hinge member that is secured to the cover.
  • a hinge according to claim 1 characterized in that the coarse screw threads are multiple threads, preferably six-start threads.
  • a hinge according to claim 1 including means for holding said nut against rotation in the guiding rod pivotal means and further including a washer disposed between the nut and the lower end of the spring.
  • a hinge according to claim 1 including retaining cams on said guiding rod and a bushing on the upper end of said guiding rod that comprises a plastics material, and has an upper annular flange and further including two washers, an upper washer which bears on said guiding rod retaining cams and a lower washer which bears on the upper end of the spring.
  • a hinge according to claim 2 characterized in that the slider has a curved recessed bearing surface and including a pin mounted in the second movable hinge member.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Hinges (AREA)
US444116A 1973-02-20 1974-02-20 Hinge Expired - Lifetime US3927439A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19732308361 DE2308361A1 (de) 1973-02-20 1973-02-20 Scharnier mit druckfeder zum gewichtsausgleich von fluegeln
DE19732317397 DE2317397C3 (de) 1973-04-06 1973-04-06 Scharnier mit Druckfeder zum Gewichtsausgleich von Flügeln
DE19732322967 DE2322967A1 (de) 1973-05-07 1973-05-07 Scharnier mit druckfeder zum gewichtsausgleich von fluegeln

Publications (1)

Publication Number Publication Date
US3927439A true US3927439A (en) 1975-12-23

Family

ID=27185065

Family Applications (1)

Application Number Title Priority Date Filing Date
US444116A Expired - Lifetime US3927439A (en) 1973-02-20 1974-02-20 Hinge

Country Status (4)

Country Link
US (1) US3927439A (enExample)
FR (1) FR2218457B3 (enExample)
GB (1) GB1435642A (enExample)
IT (1) IT1005763B (enExample)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030000955A1 (en) * 2001-05-24 2003-01-02 Young-Gil Lee Hinge assembly for a door of kimchi storage device
CN103938964A (zh) * 2014-04-25 2014-07-23 合肥华凌股份有限公司 冷柜及用于冷柜的铰链
CN104358484A (zh) * 2014-11-21 2015-02-18 合肥华凌股份有限公司 弹性铰链及冰箱
CN104764277A (zh) * 2015-04-07 2015-07-08 合肥华凌股份有限公司 冷柜门体支撑装置及冷柜
US20160160551A1 (en) * 2013-08-30 2016-06-09 Julius Blum Gmbh Actuator for movable furniture parts
KR101653316B1 (ko) * 2015-03-27 2016-09-01 엘지전자 주식회사 냉장고
CN106121412A (zh) * 2016-08-22 2016-11-16 澳柯玛股份有限公司 冷柜平衡铰链结构及顶开式冷柜
US20170045287A1 (en) * 2014-04-25 2017-02-16 Hefei Hualing Co., Ltd. Freezer and hinge for same
CN107091028A (zh) * 2017-06-08 2017-08-25 江苏星星家电科技有限公司 一种低噪音冷柜铰链
US20180229522A1 (en) * 2015-10-30 2018-08-16 Hewlett-Packard Development Company, L.P. Hinge set
CN108955059A (zh) * 2018-08-10 2018-12-07 合肥美科制冷技术有限公司 一种对开门冰箱用门体限位结构
US11142934B2 (en) * 2017-04-13 2021-10-12 Weber Knapp Company Counterbalance and method of making the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012014924A1 (de) * 2012-05-15 2013-11-21 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriertruhe
WO2013170469A1 (zh) * 2012-05-17 2013-11-21 Xiao Yousong 水平向上开启盖体用铰链
CN105649456A (zh) * 2016-03-22 2016-06-08 澳柯玛股份有限公司 一种平衡铰链结构
DE102018124101A1 (de) * 2018-09-28 2020-04-02 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriertruhe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911667A (en) * 1957-10-17 1959-11-10 Nat Lock Co Hinge assembly for cabinets and the like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911667A (en) * 1957-10-17 1959-11-10 Nat Lock Co Hinge assembly for cabinets and the like

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6766563B2 (en) * 2001-05-24 2004-07-27 Mando Climate Control Corporation Hinge assembly for a door of kimchi storage device
US20030000955A1 (en) * 2001-05-24 2003-01-02 Young-Gil Lee Hinge assembly for a door of kimchi storage device
US20160160551A1 (en) * 2013-08-30 2016-06-09 Julius Blum Gmbh Actuator for movable furniture parts
US9631411B2 (en) * 2013-08-30 2017-04-25 Julius Blum Gmbh Actuator for movable furniture parts
KR20170028301A (ko) * 2014-04-25 2017-03-13 허페이 후아링 코., 엘티디. 냉동고 및 냉동고에 이용되는 힌지
US10203149B2 (en) * 2014-04-25 2019-02-12 Hefei Hualing Co., Ltd. Freezer and hinge for same
JP2017514088A (ja) * 2014-04-25 2017-06-01 合肥華凌股▲フン▼有限公司 冷凍庫及び冷凍庫用のヒンジ
CN103938964A (zh) * 2014-04-25 2014-07-23 合肥华凌股份有限公司 冷柜及用于冷柜的铰链
US20170045287A1 (en) * 2014-04-25 2017-02-16 Hefei Hualing Co., Ltd. Freezer and hinge for same
CN104358484A (zh) * 2014-11-21 2015-02-18 合肥华凌股份有限公司 弹性铰链及冰箱
CN104358484B (zh) * 2014-11-21 2016-07-20 合肥华凌股份有限公司 弹性铰链及冰箱
KR101653316B1 (ko) * 2015-03-27 2016-09-01 엘지전자 주식회사 냉장고
CN104764277A (zh) * 2015-04-07 2015-07-08 合肥华凌股份有限公司 冷柜门体支撑装置及冷柜
US10471749B2 (en) * 2015-10-30 2019-11-12 Hewlett-Packard Development Company, L.P. Hinge set
US20180229522A1 (en) * 2015-10-30 2018-08-16 Hewlett-Packard Development Company, L.P. Hinge set
CN106121412B (zh) * 2016-08-22 2019-02-01 澳柯玛股份有限公司 冷柜平衡铰链结构及顶开式冷柜
CN106121412A (zh) * 2016-08-22 2016-11-16 澳柯玛股份有限公司 冷柜平衡铰链结构及顶开式冷柜
US11142934B2 (en) * 2017-04-13 2021-10-12 Weber Knapp Company Counterbalance and method of making the same
US20210396058A1 (en) * 2017-04-13 2021-12-23 Weber Knapp Company Counterbalance and method of making the same
US11702877B2 (en) * 2017-04-13 2023-07-18 Weber Knapp Company Counterbalance and method of making the same
CN107091028A (zh) * 2017-06-08 2017-08-25 江苏星星家电科技有限公司 一种低噪音冷柜铰链
CN108955059A (zh) * 2018-08-10 2018-12-07 合肥美科制冷技术有限公司 一种对开门冰箱用门体限位结构

Also Published As

Publication number Publication date
FR2218457B3 (enExample) 1976-11-26
GB1435642A (en) 1976-05-12
IT1005763B (it) 1976-09-30
FR2218457A1 (enExample) 1974-09-13

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