US3414309A - Magnetic catch assembly - Google Patents

Magnetic catch assembly Download PDF

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Publication number
US3414309A
US3414309A US56177966A US3414309A US 3414309 A US3414309 A US 3414309A US 56177966 A US56177966 A US 56177966A US 3414309 A US3414309 A US 3414309A
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United States
Prior art keywords
housing
pole pieces
magnet
catch assembly
tabs
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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
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Howard G Tresemer
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KEYCON INDUSTRIES Inc 4835 LBJ FREEWAY DALLAS TEXAS 75234 A CORP OF NEVADA
Original Assignee
National Lock Co
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Priority to US56177966 priority Critical patent/US3414309A/en
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Assigned to KEYCON INDUSTRIES, INC., 4835 LBJ FREEWAY, DALLAS, TEXAS 75234, A CORP. OF NEVADA reassignment KEYCON INDUSTRIES, INC., 4835 LBJ FREEWAY, DALLAS, TEXAS 75234, A CORP. OF NEVADA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL LOCK COMPANY
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/16—Devices holding the wing by magnetic or electromagnetic attraction
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/11—Magnetic

Definitions

  • ABSTRACT OF THE DISCLOSURE A magnetic catch assembly with an integral plastic housing having an integral stud centrally positioned in the housing and adapted to receive through an opening in the housing a rectangular shaped magnet and a pair of pole pieces, each of which have a central opening loosely receiving the stud, the housing having a pair of integral tabs to retain the magnet and pole pieces in the housing, with the housing also having an integral rib aligned with the stud to provide a fulcrum for pivotal movement of the pole pieces relative to the housing to properly engage a strike surface.
  • the present invention relates to a novel door catch and more particularly to a magnetic catch assembly for a door or other closure.
  • a magnetic catch assembly having a housing formed of a relatively stiff but resilient or elastic plastic composition material having a recess to receive a magnet and its associated pole pieces therein.
  • the housing includes a pair of inwardly extending retaining tabs integral therewith which retain the magnet and pole pieces within the recess; the housing having sutficient resilience so that the wall with the retaining tabs may be flexed apart to allow the maget and pole pieces to pass by the tabs and enter the recess.
  • Another object of the present invention is the provision of a magnetic catch assembly having a housing with integral retaining tabs having retaining surfaces and converging camming surfaces thereon.
  • a further object of the present invention is the pro,- vision of a magnetic catch assembly having a housing with a recess and an integral stud centrally mounted in the recess.
  • the magnet and the pole pieces all have a generally central opening therein to receive the stud so that the magnet and pole pieces are loosely mounted in the housing for individual free adjustment or pivotal movement therein around the axis of the stud.
  • FIGURE 1 is a rear elevational view of the magetic catch assembly of the present invention.
  • FIG. 2 is an end elevational view of the magnetic catch assembly taken from the right side of FIG. 1 and showing the assembly secured to a partition or wall.
  • FIG. 3 is a front elevational view of the magnetic catch assembly.
  • FIG. 4 is an exploded perspective view of the magnetic catch assembly showing the components dissembled.
  • FIG. 4 discloses a magnetic catch assembly 10 with its components disassembled and including a housing 11, a permanent magnet 12, and a pair of metal pole pieces 13 and 14 at the opposite sides of the magnet.
  • the magnet 12 has a generally central opening 15 and is generally of less width than the pole pieces.
  • the pole pieces 13 and 14 each have an opening 16 which is central as to the length of the pole piece but slightly centrally offset of its width.
  • the housing 11 has a centrally offset portion 17 having a cavity or recess 18 open at the rear and along one side or edge to loosely receive the magnet 12 and pole pieces 13 and 14, and oppositely extending mounting flanges 19 having elongated openings 21 for receiving suitable securing means, such as screws 22, to anchor the housing 11 in adjusted position to an anchoring surface such as a partition or Wall 23.
  • Extending inwardly into the cavity or recess 18 from the rear edge of the flange 19 is a pair of inwardly projecting retaining tabs 24 each having a retaining surface 25 and an inwardly converging camming surface 26.
  • the central portion 17 of the housing 11 has an opening 27 into the recess 18 in one end wall of the housing adjacent the tabs 24.
  • the cavity 18 loosely receives the magnet 12 and pole pieces 13 and 14 therein as seen in FIGS. 1, 2 and 3, and a stud or shaft 28 integral with the housing 11 extends rearwardly from the front wall 29 of the housing to terminate at the plane of the rear surface of the housing and flanges.
  • the stud 28 is loosely received in the opening 15 in the magnet 12 and in the openings 16 in the pole pieces 13 and 14 to operatively align these members in the housing 17.
  • a rib 31 is formed on the inner surface of housing wall 32 to provide a fulcrum about which the pole pieces 13 and 14 pivot so that the edges 33 of the pole pieces protruding beyond the outer or adjacent edge of the magnet can automatically adjust to the strike surface.
  • the pole pieces 13 and 14 also are adapted to adjust individually with the recess 18 being sufficiently larger than the periphery of the pole pieces 13 and 14 to allow for this free adjustment or pivotal movement.
  • this catch assembly 10 To assemble the components of this catch assembly 10 in the housing 11, the latter is centrally flexed to spread and move the tabs 24 apart and then the pole piece 13, magnet 12 and the pole piece 14 are dropped over the stud 28 into the cavity or recess 18. The housing 11 is then released and the magnet 12 and pole pieces 13 and 14 are retained in the catch by the surfaces 25 of the retaining tabs 24. If the tabs 24 are not spread sufficiently far apart by flexing the housing during such assembly, the outer edges of the pole pieces will engage the beveled surfaces 26 to cam the tabs 24 to allow the pole pieces and magnet to enter the cavity or recess and be retained therein by the tabs.
  • a magnetic catch assembly consisting of an integral plastic housing having a closed front wall and side walls defining a central cavity and having a rear opening and a side wall opening into the cavity, oppositely extending mounting flanges on said housing, an integral stud centrally positioned in said cavity and extending inwardly from said front wall of the housing to the rear opening therein, a magnet and a pair of pole pieces each of rectangular shape positioned in said cavity with the pole pieces on opposite sides of the magnet with one edge only of said pole pieces extending outward through the side wall opening beyond the housing to engage a strike surface, the magnet and the pole pieces each having a generally central opening loosely receiving said stud, and retaining means integral with said housing retaining the magnet and pole pieces within said cavity including 3 a pair of oppositely disposed inwardly extending tabs integral with but of substantially less length than the opposed side walls of the housing, said tabs being positioned adjacent the side opening of the housing to extend into the rear opening thereof, each ta-b having an inner 5 planar retaining surface perpendicular to

Description

Dec. 3, 1968 H. G. TRESEMER 3,414,309
MAGNETIC CATCH ASSEMBLY Filed June 30, 1966 All ii Jar/m jw a'wa/La & .T/zesenzaz/ United States Patent 3,414,309 MAGNETIC CATCH ASSEMBLY Howard G. Tresemer, Rockford, Ill., assignor to National Lock Co., Rockford, Ill., a corporation of Delaware Filed June 30, 1966, Ser. No. 561,779 2 Claims. ('Cl. 292251.5)
ABSTRACT OF THE DISCLOSURE A magnetic catch assembly with an integral plastic housing having an integral stud centrally positioned in the housing and adapted to receive through an opening in the housing a rectangular shaped magnet and a pair of pole pieces, each of which have a central opening loosely receiving the stud, the housing having a pair of integral tabs to retain the magnet and pole pieces in the housing, with the housing also having an integral rib aligned with the stud to provide a fulcrum for pivotal movement of the pole pieces relative to the housing to properly engage a strike surface.
The present invention relates to a novel door catch and more particularly to a magnetic catch assembly for a door or other closure.
Among the objects of the present invention is the provision of a magnetic catch assembly having a housing formed of a relatively stiff but resilient or elastic plastic composition material having a recess to receive a magnet and its associated pole pieces therein. The housing includes a pair of inwardly extending retaining tabs integral therewith which retain the magnet and pole pieces within the recess; the housing having sutficient resilience so that the wall with the retaining tabs may be flexed apart to allow the maget and pole pieces to pass by the tabs and enter the recess.
Another object of the present invention is the provision of a magnetic catch assembly having a housing with integral retaining tabs having retaining surfaces and converging camming surfaces thereon. When the magnet and pole pieces are inserted .into the recess in the housing, they engage the camming surfaces of the tabs to urge the tabs and walls apart allowing the magnet and pole pieces to enter the recess; the tabs snapping back into position with the retaining surfaces over the members to retain them in the recess.
A further object of the present invention is the pro,- vision of a magnetic catch assembly having a housing with a recess and an integral stud centrally mounted in the recess. The magnet and the pole pieces all have a generally central opening therein to receive the stud so that the magnet and pole pieces are loosely mounted in the housing for individual free adjustment or pivotal movement therein around the axis of the stud.
Further objects are to provide a construction of maximum simplicity, efficiency, economy and ease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby.
In the drawing:
FIGURE 1 is a rear elevational view of the magetic catch assembly of the present invention.
FIG. 2 is an end elevational view of the magnetic catch assembly taken from the right side of FIG. 1 and showing the assembly secured to a partition or wall.
FIG. 3 is a front elevational view of the magnetic catch assembly.
FIG. 4 is an exploded perspective view of the magnetic catch assembly showing the components dissembled.
Referring more particularly to the disclosure in the Patented Dec. 3, 1968 "ice drawing wherein is shown an illustrative embodiment of the present invention, FIG. 4 discloses a magnetic catch assembly 10 with its components disassembled and including a housing 11, a permanent magnet 12, and a pair of metal pole pieces 13 and 14 at the opposite sides of the magnet. The magnet 12 has a generally central opening 15 and is generally of less width than the pole pieces. The pole pieces 13 and 14 each have an opening 16 which is central as to the length of the pole piece but slightly centrally offset of its width.
The housing 11 has a centrally offset portion 17 having a cavity or recess 18 open at the rear and along one side or edge to loosely receive the magnet 12 and pole pieces 13 and 14, and oppositely extending mounting flanges 19 having elongated openings 21 for receiving suitable securing means, such as screws 22, to anchor the housing 11 in adjusted position to an anchoring surface such as a partition or Wall 23. Extending inwardly into the cavity or recess 18 from the rear edge of the flange 19 is a pair of inwardly projecting retaining tabs 24 each having a retaining surface 25 and an inwardly converging camming surface 26. The central portion 17 of the housing 11 has an opening 27 into the recess 18 in one end wall of the housing adjacent the tabs 24.
The cavity 18 loosely receives the magnet 12 and pole pieces 13 and 14 therein as seen in FIGS. 1, 2 and 3, and a stud or shaft 28 integral with the housing 11 extends rearwardly from the front wall 29 of the housing to terminate at the plane of the rear surface of the housing and flanges. The stud 28 is loosely received in the opening 15 in the magnet 12 and in the openings 16 in the pole pieces 13 and 14 to operatively align these members in the housing 17. A rib 31 is formed on the inner surface of housing wall 32 to provide a fulcrum about which the pole pieces 13 and 14 pivot so that the edges 33 of the pole pieces protruding beyond the outer or adjacent edge of the magnet can automatically adjust to the strike surface. The pole pieces 13 and 14 also are adapted to adjust individually with the recess 18 being sufficiently larger than the periphery of the pole pieces 13 and 14 to allow for this free adjustment or pivotal movement.
To assemble the components of this catch assembly 10 in the housing 11, the latter is centrally flexed to spread and move the tabs 24 apart and then the pole piece 13, magnet 12 and the pole piece 14 are dropped over the stud 28 into the cavity or recess 18. The housing 11 is then released and the magnet 12 and pole pieces 13 and 14 are retained in the catch by the surfaces 25 of the retaining tabs 24. If the tabs 24 are not spread sufficiently far apart by flexing the housing during such assembly, the outer edges of the pole pieces will engage the beveled surfaces 26 to cam the tabs 24 to allow the pole pieces and magnet to enter the cavity or recess and be retained therein by the tabs.
Having thus disclosed the invention, I claim:
1. A magnetic catch assembly consisting of an integral plastic housing having a closed front wall and side walls defining a central cavity and having a rear opening and a side wall opening into the cavity, oppositely extending mounting flanges on said housing, an integral stud centrally positioned in said cavity and extending inwardly from said front wall of the housing to the rear opening therein, a magnet and a pair of pole pieces each of rectangular shape positioned in said cavity with the pole pieces on opposite sides of the magnet with one edge only of said pole pieces extending outward through the side wall opening beyond the housing to engage a strike surface, the magnet and the pole pieces each having a generally central opening loosely receiving said stud, and retaining means integral with said housing retaining the magnet and pole pieces within said cavity including 3 a pair of oppositely disposed inwardly extending tabs integral with but of substantially less length than the opposed side walls of the housing, said tabs being positioned adjacent the side opening of the housing to extend into the rear opening thereof, each ta-b having an inner 5 planar retaining surface perpendicular to the side wall and an outer beveled camming surface.
2. A magnetic catch assembly as set forth in claim 1, in which an integral rib is centrally positioned on the inner surface of the side wall opposite the side wall opening and aligned with the stud to provide a fulcrum for pivotal movement of the pole pieces relative to the housing to properly engage a strike surface.
References Cited UNITED STATES PATENTS Ostrander 89-97 Saxton 292-2515 Loeb 292251.5 Saxton 292-251.5 Wilson 29225 1.5 Brink 292-2515 MARVIN A. CHAMPION, Primary Examiner.
EDWARD J. MCCARTHY, Assistant Examiner.
US56177966 1966-06-30 1966-06-30 Magnetic catch assembly Expired - Lifetime US3414309A (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976316A (en) * 1975-03-10 1976-08-24 American Shower Door Co., Inc. Magnetic door latch
US4056275A (en) * 1976-08-30 1977-11-01 Keeler Brass Company Closure catch assembly
US20100270817A1 (en) * 2009-04-28 2010-10-28 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Collapsible device
US8917154B2 (en) 2012-12-10 2014-12-23 Correlated Magnetics Research, Llc. System for concentrating magnetic flux
US8937521B2 (en) 2012-12-10 2015-01-20 Correlated Magnetics Research, Llc. System for concentrating magnetic flux of a multi-pole magnetic structure
US8947185B2 (en) 2010-07-12 2015-02-03 Correlated Magnetics Research, Llc Magnetic system
US8957751B2 (en) 2010-12-10 2015-02-17 Correlated Magnetics Research LLC System and method for affecting flux of multi-pole magnetic structures
US8963668B2 (en) 2008-04-04 2015-02-24 Correlated Magnetics Research LLC Field emission system and method
US9082539B2 (en) 2008-04-04 2015-07-14 Correlated Magnetics Research LLC. System and method for producing magnetic structures
US9105380B2 (en) 2008-04-04 2015-08-11 Correlated Magnetics Research, Llc. Magnetic attachment system
US9105384B2 (en) 2008-04-04 2015-08-11 Correlated Megnetics Research, Llc. Apparatus and method for printing maxels
US9111673B2 (en) 2010-05-10 2015-08-18 Correlated Magnetics Research, Llc. System and method for moving an object
US9202615B2 (en) 2012-02-28 2015-12-01 Correlated Magnetics Research, Llc System for detaching a magnetic structure from a ferromagnetic material
US9202616B2 (en) 2009-06-02 2015-12-01 Correlated Magnetics Research, Llc Intelligent magnetic system
US9219403B2 (en) 2011-09-06 2015-12-22 Correlated Magnetics Research, Llc Magnetic shear force transfer device
US9245677B2 (en) 2012-08-06 2016-01-26 Correlated Magnetics Research, Llc. System for concentrating and controlling magnetic flux of a multi-pole magnetic structure
US9257219B2 (en) 2012-08-06 2016-02-09 Correlated Magnetics Research, Llc. System and method for magnetization
US9275783B2 (en) 2012-10-15 2016-03-01 Correlated Magnetics Research, Llc. System and method for demagnetization of a magnetic structure region
US9298281B2 (en) 2012-12-27 2016-03-29 Correlated Magnetics Research, Llc. Magnetic vector sensor positioning and communications system
US9312634B2 (en) 2011-03-24 2016-04-12 Correlated Magnetics Research LLC Electrical adapter system
US9367783B2 (en) 2009-06-02 2016-06-14 Correlated Magnetics Research, Llc Magnetizing printer and method for re-magnetizing at least a portion of a previously magnetized magnet
US9371923B2 (en) 2008-04-04 2016-06-21 Correlated Magnetics Research, Llc Magnetic valve assembly
US9404776B2 (en) 2009-06-02 2016-08-02 Correlated Magnetics Research, Llc. System and method for tailoring polarity transitions of magnetic structures
US9711268B2 (en) 2009-09-22 2017-07-18 Correlated Magnetics Research, Llc System and method for tailoring magnetic forces

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2006962A (en) * 1932-11-28 1935-07-02 Herby Frame
US2792249A (en) * 1953-05-27 1957-05-14 Engineered Products Company Magnetic catch assembly
US2837366A (en) * 1956-12-24 1958-06-03 Loeb Morris Magnetic catch
US2909384A (en) * 1954-04-30 1959-10-20 Engineered Products Company Magnetic door catch
US3174786A (en) * 1963-05-01 1965-03-23 Harry C Wilson Magnetic catch assembly
US3313565A (en) * 1965-03-31 1967-04-11 William J Brink Magnetic door catch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2006962A (en) * 1932-11-28 1935-07-02 Herby Frame
US2792249A (en) * 1953-05-27 1957-05-14 Engineered Products Company Magnetic catch assembly
US2909384A (en) * 1954-04-30 1959-10-20 Engineered Products Company Magnetic door catch
US2837366A (en) * 1956-12-24 1958-06-03 Loeb Morris Magnetic catch
US3174786A (en) * 1963-05-01 1965-03-23 Harry C Wilson Magnetic catch assembly
US3313565A (en) * 1965-03-31 1967-04-11 William J Brink Magnetic door catch

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976316A (en) * 1975-03-10 1976-08-24 American Shower Door Co., Inc. Magnetic door latch
US4056275A (en) * 1976-08-30 1977-11-01 Keeler Brass Company Closure catch assembly
US9105384B2 (en) 2008-04-04 2015-08-11 Correlated Megnetics Research, Llc. Apparatus and method for printing maxels
US9536650B2 (en) 2008-04-04 2017-01-03 Correlated Magnetics Research, Llc. Magnetic structure
US9371923B2 (en) 2008-04-04 2016-06-21 Correlated Magnetics Research, Llc Magnetic valve assembly
US9269482B2 (en) 2008-04-04 2016-02-23 Correlated Magnetics Research, Llc. Magnetizing apparatus
US8963668B2 (en) 2008-04-04 2015-02-24 Correlated Magnetics Research LLC Field emission system and method
US9082539B2 (en) 2008-04-04 2015-07-14 Correlated Magnetics Research LLC. System and method for producing magnetic structures
US9105380B2 (en) 2008-04-04 2015-08-11 Correlated Magnetics Research, Llc. Magnetic attachment system
US20100270817A1 (en) * 2009-04-28 2010-10-28 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Collapsible device
US9202616B2 (en) 2009-06-02 2015-12-01 Correlated Magnetics Research, Llc Intelligent magnetic system
US9404776B2 (en) 2009-06-02 2016-08-02 Correlated Magnetics Research, Llc. System and method for tailoring polarity transitions of magnetic structures
US9367783B2 (en) 2009-06-02 2016-06-14 Correlated Magnetics Research, Llc Magnetizing printer and method for re-magnetizing at least a portion of a previously magnetized magnet
US9711268B2 (en) 2009-09-22 2017-07-18 Correlated Magnetics Research, Llc System and method for tailoring magnetic forces
US9111673B2 (en) 2010-05-10 2015-08-18 Correlated Magnetics Research, Llc. System and method for moving an object
US9406424B2 (en) 2010-05-10 2016-08-02 Correlated Magnetics Research, Llc System and method for moving an object
US8947185B2 (en) 2010-07-12 2015-02-03 Correlated Magnetics Research, Llc Magnetic system
US9111672B2 (en) 2010-07-12 2015-08-18 Correlated Magnetics Research LLC. Multilevel correlated magnetic system
US8957751B2 (en) 2010-12-10 2015-02-17 Correlated Magnetics Research LLC System and method for affecting flux of multi-pole magnetic structures
US9312634B2 (en) 2011-03-24 2016-04-12 Correlated Magnetics Research LLC Electrical adapter system
US9219403B2 (en) 2011-09-06 2015-12-22 Correlated Magnetics Research, Llc Magnetic shear force transfer device
US9202615B2 (en) 2012-02-28 2015-12-01 Correlated Magnetics Research, Llc System for detaching a magnetic structure from a ferromagnetic material
US9257219B2 (en) 2012-08-06 2016-02-09 Correlated Magnetics Research, Llc. System and method for magnetization
US9245677B2 (en) 2012-08-06 2016-01-26 Correlated Magnetics Research, Llc. System for concentrating and controlling magnetic flux of a multi-pole magnetic structure
US9275783B2 (en) 2012-10-15 2016-03-01 Correlated Magnetics Research, Llc. System and method for demagnetization of a magnetic structure region
US8937521B2 (en) 2012-12-10 2015-01-20 Correlated Magnetics Research, Llc. System for concentrating magnetic flux of a multi-pole magnetic structure
US8917154B2 (en) 2012-12-10 2014-12-23 Correlated Magnetics Research, Llc. System for concentrating magnetic flux
US9588599B2 (en) 2012-12-27 2017-03-07 Correlated Magnetics Research, Llc. Magnetic vector sensor positioning and communication system
US9298281B2 (en) 2012-12-27 2016-03-29 Correlated Magnetics Research, Llc. Magnetic vector sensor positioning and communications system

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Owner name: KEYCON INDUSTRIES, INC., 4835 LBJ FREEWAY, DALLAS,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NATIONAL LOCK COMPANY;REEL/FRAME:004478/0026

Effective date: 19851009