US3451706A - Magnetic closure - Google Patents

Magnetic closure Download PDF

Info

Publication number
US3451706A
US3451706A US3451706DA US3451706A US 3451706 A US3451706 A US 3451706A US 3451706D A US3451706D A US 3451706DA US 3451706 A US3451706 A US 3451706A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
flexible
magnet
member
closure
movable
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
Inventor
Max Baermann
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.)
MAX BAERMANN
Original Assignee
Max Baermann
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
Grant date

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/16Devices holding the wing by magnetic or electromagnetic attraction
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/11Magnetic

Description

June 24, 1969 M. BAERMANN MAGNETIC CLOSURE Filed Dec. 27, 1966 INVENTOR. MAX BAERMANN ATTORNEYS.

US. Cl. 292-251.5

United States Patent 3,451,706 MAGNETIC CLOSURE Max Baermann, Bensberg, Germany (506 Bensberg, Wulfshof, Bezirk Cologne, Germany) Filed Dec. 27, 1966, Ser. No. 604,683 Int. Cl. E05c 19/16, 17/56 4 Claims ABSTRACT OF THE DISCLOSURE A closure arrangement for a pair of relatively movable members wherein one of the members is provided with a relatively flat elongated surface of a material attractable to a magnet, and the other member is provided with a flexible magnet in elongated relatively flat strip form. One edge portion of the magnet stripis secured to said other member, the opposing edge portion projecting from the member in cantilever fashion. The members are movable relative to each other so that the flat surface of the attractable material is contiguous with the projecting edge portion of the flexible magnet strip when the members are in a normally closed relationship.

This invention relates to the closure art and more particularly to a magnet closure.

The present invention is particularly applicable to magnetic closures for a fixed frame member and a movable door member, aud it will be described with particular reference thereto; however, it will be appreciated that the invention has broader applications and may be used in other closure arrangements, as for instance, a closure for two movable members.

The present invention contemplates the use of a flexible permanent magnet in the construction of a magnetic closure. Such magnets are known in the art; see for instance, my US. Patent 2,959,832 issued Nov. 15, 1960. This patent describes a flexible magnet consisting of particles of a powdered, permanent magnetic material dispersed throughout a nonmagnetic, flexible plastic binder. The disclosure of this patent is incorporated by reference herein to the extent necessary for a complete understanding of one type of flexible magnet and its method of manufacture, useful in the practice of the present invention.

Fexible magnets have heretofore found utility in full peripheral closures for refrigerators, freezers, humidity cabinets and the like where the closure also serves as a seal. In order to compensate for deviations in the space between the door and frame, it was found expedient to back the flexible magnet with an air tube, a foam plate, or other similar cushioning means. This too is mentioned in my US. Patent 2,959,832. While this arrangement works very satisfactorily, it is expensive, in terms of materials and manufacturing costs, and in addition, results in a closure which is bulkier than desirable for certain applications.

The present invention overcomes these and other disadvantages of the prior art, and in addition provides a closure which is essentially noiseless in operation.

In accordance with the present invention, there is provided a magnetic closure for a fixed frame member and a movable door member comprising at least one flexible magnet having an edge portion secured to one of the members, with the remainder of the flexible magnet, being freely suspended in cantilever fashion and projecting into the path of travel of the movable door member.

Therefore, it is an object of the invention to provide a magnetic closure of improved construction.

A further object of the invention is to provide a magnetic closure utilizing a flexible magnet, which does not require the use of a backing of cushioning means.

A further object of the invention is to provide a magnetic closure utilizing a flexible magnet, which is less costly and less bulky than similar closures known to the prior art.

Another object of the invention is to provide a magnetic closure which is essentially noiseless in operation.

These and other objects and advantages will become apparent from the following detailed description of a preferred embodiment of the invention when read in connection with the accompanying drawings, in which:

FIGURE 1 is a schematic, perspective view of a preferred embodiment of the present invention;

FIGURE 2 is a schematic, section view showing a specific closure arrangement; and

FIGURE 3 is a schematic, section view of a modified closure arrangement.

Referring now to the drawings, wherein the showings I are for purposes of illustrating preferred embodiments of the invention only and not for the purpose of limiting the same, FIGURE 1 shows a cabinet designated generally as 10, comprising fixed frame member 12 and movable door member 14, having installed therein a magnetic closure comprising flexible magnet 16 having an edge portion thereof secured along the periphery of movable door member 14, with the remainder of the flexible magnet being freely suspended in cantilever fashion and projecting into the path of travel of movable door member 14. The magnetic closure further comprises magnetic means such as second flexible magnet 18 having an edge portion secured to the periphery of fixed frame member 12, the remainder of the second flexible magnet being freely suspended in cantilever fashion and projecting into the path of the travel of movable door member 14. Flexible magnets 16, 18 are positioned relative to each other so that a portion of flexible magnet 16 overlaps in front of flexible magnet 18.

As best seen in FIGURE 2, flexible magnet 18 secured to fixed frame member 12 defines, in its unflexed condition, the closed terminus of the path of travel of movable door member 14. Since the overlapping portions of flexible magnets 16, 18 are free standing, they are able through flexure to compensate for any deviations in the space between fixed frame member 12 and movable door member 14, without the need for a cushioning backing attached to one of the flexible magnets. In order to limit the extent to which movable door member 14 can be pushed beyond the normal closed terminus of its path of travel (i.e. the position shown in FIGURE 2), member 12 is provided with backstop 20, and movable door member 14 is provided with protrusion 21. Thus, as movable door member 14 is closed, it can advance only to a point where protrusion 21 contacts backstop 20.

It is within the contemplation of the .invention to replace one or the other of flexible magnets 16, 18 with an inflexible magnetic means, such as an inflexible magnetically permeable material, e.g., a strip of iron or steel, or an inflexible magnetized material, e.g., a strip of iron or steel. Thus, the invention contemplates closures using either one or two flexible magnets. It will of course, be understood that where two magnets are used, be they both flexible or one flexible and the other inflexible, opposite poles on the two magnets must be adjacent to each other to effect a closure. As described in my US. Patent 2,959,832, the poles on a flexible magnet may either run longitudinally along the length of the magnet, or transversely across the length of the magnet; and preferably only one surface of the magnet is polarized. Inflexible magnets, where used, will of course be magnetized in a corresponding direction. Either of these arrangements is satisfactory for purposes of the present invention.

Flexible magnets 16, 18 as well as an inflexible replacement for one, may have their edge portions secured to the fixed frame member and movable door member in any suitable fashion, as for instance, by the use of adhesives, or fasteners such as staples. Alternatively, the edges may be press fit in a slot formed in the frame or door members as shown in FIGURE 2. If the frame or door members are laminated structures, the edge portions may be set between lamina.

The width, and thickness of the flexible magnets, the dimensional proportion of secured edge portion to the freely suspended remainder, and the amount of overlap of a flexible magnet with its mating magnetic means, can all be varied within reasonable limits. Suitable valves for these parameters will in part be determined by the strength of the magnet or magnets, the degree of flexibility of the at least one flexible magnet used, and the use of one or two flexible magnets. In one limited aspect of the invention, the flexible magnet may range in thickness from about to about Ms", have a Width in the range of from about to have a secured edge portion amounting to about a quarter or a third of its width, and an overlap with a mating magnetic means amounting to about a third to a half of its width.

The flexible magnets produced in accordance with my US. Patent 2,959,832, are generally dark in color; however they may be provided with a facing of any desired color in accordance with the practice described and claimed in my US Patent 3,191,106 issued June 22, 1965.

FIGURE 3, shows a modification of the invention as applied to a cabinet having a metal door member. Here the cabinet comprises fiXed frame member 22, and movable metal door member 24, provided with magnetic means, which may take the form of a turned down flange or lip 26 of movable metal door member 24. Fixed frame member 24 has secured to it by any suitable fastening means, such as rivet 28, flexible magnet 30 and backstop 32.

The present invention has been described in conjunction with certain structural embodiments; however, it is to be appreciated that various structural changes may be made in the illustrated embodiments without departing from the intended scope and spirit of the present invention.

Having thus described my invention, I claim:

1. A closure arrangement for a pair of relatively movable members said members defining elongated cooperating parts which are contiguous when the movable members are in a normally closed relationship:

a relatively flat elongated surface of a material attract able to a magnet supported by one of said parts;

a flexible magnet in elongated relatively flat strip form supported by the other of said parts, said flexible magnet including an elongated first edge portion rigidly secured to the other of said parts and an elongated relatively flat opposing edge portion projecting from said other part in cantilever fashion;

said flexible magnet projecting edge portion and said surface of attractable material being supported by said closure parts so that one defines a path of travel and the other a terminus for said path of travel.

2. The closure arrangement of claim 1 wherein one of said members is relatively fixed and the other of said members is relatively movable, said flexible magnet being secured to said relatively fixed member and in its unflexed condition defining the normally closed terminus for the path of travel of said surface of attractable material.

3. The closure arrangement of claim 1 wherein one of said members is relatively fixed and the other of said members is relatively movable, said flexible magnet being secured to said relatively movable member, said relatively flat elongated surface of attractable material defining the normally closed terminus of the path of travel of said flexible magnet.

4. The closure arrangement of claim 1 wherein one of said members is relatively fixed and the other of said members is relatively movable, both of said parts comprising a flexible magnet supported thereon each including an elongated first edge portion rigidly secured to the part and an elongated relatively flat opposing edge portion projecting from the part in cantilever fashion, one of the projecting edge portions defining the terminus of the path of travel of the other projecting edge portion.

References Cited UNITED STATES PATENTS 3,221,375 12/1965 Lewis 292-251.5 X 3,260,788 7/1966 Stetson 292-2515 X FOREIGN PATENTS 1,068,908 2/1954 France.

MARVIN A. CHAMPION, Primary Examiner.

E. I. MCCARTHY, Assistant Examiner.

US3451706A 1966-12-27 1966-12-27 Magnetic closure Expired - Lifetime US3451706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US60468366 true 1966-12-27 1966-12-27

Publications (1)

Publication Number Publication Date
US3451706A true US3451706A (en) 1969-06-24

Family

ID=24420586

Family Applications (1)

Application Number Title Priority Date Filing Date
US3451706A Expired - Lifetime US3451706A (en) 1966-12-27 1966-12-27 Magnetic closure

Country Status (1)

Country Link
US (1) US3451706A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730577A (en) * 1971-03-17 1973-05-01 Glass Lab Co Magneto-responsive composite molding
US4110552A (en) * 1975-07-07 1978-08-29 International Telephone & Telegraph Corporation Electro/mechanical enclosure with magnetic cover means
US4398371A (en) * 1981-08-31 1983-08-16 Jenkins James H Magnetic smoke and fire shield
US4412708A (en) * 1981-09-21 1983-11-01 Pace Industries Inc. Cabinet door hinge construction
US4630331A (en) * 1985-06-24 1986-12-23 Collister Kenneth D One piece child safety handle
US5510891A (en) * 1995-01-23 1996-04-23 Frangie; Nehme Object characteristic direct measuring device utilizing a magnetically attracted lover base and an upper frame having a scaled lens therein
US20110031854A1 (en) * 2009-08-10 2011-02-10 Ilene Ruth Schwartz Medicine/cosmetic cabinet with pivoting mirror assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1068908A (en) * 1952-09-30 1954-07-01 New door locking device
US3221375A (en) * 1962-12-14 1965-12-07 Braden Steel Corp Sealing means
US3260788A (en) * 1964-03-11 1966-07-12 Emerson & Cuming Inc Magnetic radio frequency seal for shielded enclosures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1068908A (en) * 1952-09-30 1954-07-01 New door locking device
US3221375A (en) * 1962-12-14 1965-12-07 Braden Steel Corp Sealing means
US3260788A (en) * 1964-03-11 1966-07-12 Emerson & Cuming Inc Magnetic radio frequency seal for shielded enclosures

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730577A (en) * 1971-03-17 1973-05-01 Glass Lab Co Magneto-responsive composite molding
US4110552A (en) * 1975-07-07 1978-08-29 International Telephone & Telegraph Corporation Electro/mechanical enclosure with magnetic cover means
US4398371A (en) * 1981-08-31 1983-08-16 Jenkins James H Magnetic smoke and fire shield
US4412708A (en) * 1981-09-21 1983-11-01 Pace Industries Inc. Cabinet door hinge construction
US4630331A (en) * 1985-06-24 1986-12-23 Collister Kenneth D One piece child safety handle
US5510891A (en) * 1995-01-23 1996-04-23 Frangie; Nehme Object characteristic direct measuring device utilizing a magnetically attracted lover base and an upper frame having a scaled lens therein
US20110031854A1 (en) * 2009-08-10 2011-02-10 Ilene Ruth Schwartz Medicine/cosmetic cabinet with pivoting mirror assembly

Similar Documents

Publication Publication Date Title
US3668745A (en) Sealing closure
US3385001A (en) Combination weather seal and rub strip
US3228133A (en) Permanent magnet display board
US3276167A (en) Sealing element
US3070852A (en) Refrigerator cabinet, including improved closure sealing means
US3327447A (en) Interlocking joint for abutted edges of insulated panel sections
US3260788A (en) Magnetic radio frequency seal for shielded enclosures
US3009225A (en) Separable two-part magnetic connector
US4510986A (en) Magnetically attached storm windows and the like
US3629756A (en) Thin sheet magnet
US4270781A (en) Opening and closing apparatus for doors and the like
US5975661A (en) Refrigerator door seal assembly
US2888291A (en) Magnetic catch
US2701158A (en) Magnetic door catch
US2126995A (en) Panel cabinet
US3600025A (en) Releasable magnetic latch
US3204995A (en) Magnetic catch
US2899256A (en) Refrigerating apparatus
US3827021A (en) Magnet gripping fixture
US3257586A (en) Flexible permanent magnet and composition
US2471634A (en) Refrigerator closure and seal
US3848390A (en) Window fastener
US4387541A (en) Window assembly with magnetically attachable glazing panels
US3004309A (en) Magnetic closure seal
US4999951A (en) Magnetic window seal assembly