US3499126A - Electrical contact assembly with ramp guide - Google Patents

Electrical contact assembly with ramp guide Download PDF

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Publication number
US3499126A
US3499126A US747280A US3499126DA US3499126A US 3499126 A US3499126 A US 3499126A US 747280 A US747280 A US 747280A US 3499126D A US3499126D A US 3499126DA US 3499126 A US3499126 A US 3499126A
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United States
Prior art keywords
contact element
fixed contact
slidable
fixed
contact elements
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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
Application number
US747280A
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English (en)
Inventor
Edward A Jones
Vincent H Scopack
James A Kruse
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Precision Products Inc
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Filing date
Publication date
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Publication of US3499126A publication Critical patent/US3499126A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding

Definitions

  • An improved electrical contact assembly is disclosed.
  • the assembly comprises three fixed contact elements positioned in two grooves; two of the fixed contact elements have portions aligned with one of the grooves while the third fixed contact is positioned Within the other groove.
  • Two slidable contact elements move within the grooves, one in each groove for making and breaking electrical contact with the fixed contact elements.
  • a guide ramp is provided adjacent the groove containing the two fixed contact elements for supporting that grooves slidable contact element between electrical contact with either fixed contact element and for providing positive disengagement of the slidable contact element from the fixed contact elements.
  • This invention relates to electrical contact assemblies for use in electrical switches and more particularly to electrical contact assemblies wherein camming' action provides for positive contact element disengagement.
  • the spring finger contact elements are longitudinally moveable from a first or extended position to a second or contracted position; in each of the first and second positions the slidable spring finger contact elements engage a different set of fixed contact elements thereby providing a switching function by changes between the two positions.
  • Another problem of concern has been the migration of the material comprising the fixed contact onto a normally insulated area due to a smearing action of the slidable contact elements and due to electrical arcing.
  • the electrical contact elements tend to remain electrically closed longer than desirable since electrically conductive material has been deposited'on the formerly all insulative material.
  • Such an extension of the electrical engagement period may be undesirable when a break before make switching condition is required, i.e., the opening of one circuit must occur before the closing of a second circuit.
  • an electrical switch contact assembly comprising first, second and third fixed contact elements, first and second connected slidable contact elements, a nonconductive base for supporting the first, second and third fixed contact elements wherein the first and second fixed contact elements are aligned to be alternately contacted by the first slidable contact element and the third fixed contact element is disposed to be contacted by the second slidable contact element, means for guiding and supporting the first slidable contact element between alternate contact with the first and second fixed contact elements and surface means for contacting said guiding and supporting means, said surface means connected to said first slidable contact element supported by the base support means and covering at least a portion of the base means, a slidable electrical contact for selectively engaging the fixed contact and a guide means for selectively supporting the slidable contact whereby the slidable contact is moveable along the guide means for selectively making and breaking engagement with the fixed contact.
  • An object of the present invention is to provide a new and improved electrical contact assembly which is relatively simple to construct and exceedingly reliable in making and/or breaking electrical engagement.
  • Another object of the subject invention is to provide a new and improved electrical contact assembly which provides for positive removal of the slidable contact element from contact with the fixed contact element so as to prevent migration problems.
  • FIG. 1 is a perspective View of a prior art arrangement of fixed contact elements in contact with an array of slidable contact elements.
  • FIG. 2 is a perspective view of a preferred embodiment and illustrates fixed contact elements in contact with slidable contact elements and including a guide means or ramp.
  • FIG. 3 is a perspective view of another preferred embodiment illustrating one fixed contact element, one slidable contact element and a corresponding guide means.
  • FIG. 4 is a perspective view of an embodiment very similar in structure to that shown in FIG. 3 except illustrating a fixed contact element providing the opposite electrical make-break sequence.
  • FIG. 5 is a side view of a fully assembled switch with a pushbutton actuator.
  • FIG. 6 is an enlarged partially broken away side view of a portion of a switch as shown in FIG. 5 illustrating the fixed and slidable contact elements shown in FIG. 2.
  • FIG. 7 is an enlarged partially broken away side view of a portion of a switch as shown in FIG. 5 illustrating the fixed and slidable contact elements shown in FIGS. 3 and 4.
  • FIG. 8 is an exploded side view of the portion of the switch illustrated in FIG. 6.
  • FIG. 1 there is shown a prior art array of contact elements comprising three fixed contact elements 10, 12 and 14 and three slidable contact elements 16, 18 and 20 that are constructed of strips of spring material, commonly referred to as spring finger contact elements which are connected by a common lateral arm 22.
  • the fixed contact elements 10, 12 and 14 are mounted upon an insulative support, portions of which are designated 24 and 26 with which the fixed contact elements and 14 are respectively aligned so as to form a flush surface.
  • the slidable contact elements 16, 18 and 20 are movable along a longitudinal path from a first position as shown in FIG.
  • slidable contact elements 16 and 20 make and break electrical contact during their movement from the first position to the second position; essentially, it is the breaking of electrical contact that causes the problem of electrical arcing.
  • slidable contact element 20 is moved from the first position wherein it engages fixed contact element 14 to the second position wherein it engages the insulative portion 26, an electrical arc may develop between the edge portion 28 of contact element 14 and the slidable contact element 20.
  • the arcing will cause a minute area on the fixed contact to reach an extremely high temperature which results in the pitting of that'area. Pitting is a major problem because of the slow deterioration of the fixed contact; good electrical engagement becomes uncertain as does the point of electrical break.
  • the electrical arcing and sliding movement of the slidable contact element cause migration of the material of the fixed contact element along the path traversed by the slidable contact element.
  • the slidable contact element 20 breaks contact with the fixed contact element 14 before the slidable contact element 16 contacts fixed contact element 10.
  • a shorthand expression for the above mentioned switching sequence is break-before-make. It becomes apparent that migration of the material of the fixed contact element 14 beyond the edge portion 28 onto the insulative portion 26 will cause an extension of electrical contact time of the slidable contact element 20 and the fixed contact element 14. Hence, after a period of usage the switch will change to a makebefore-break arrangement and thus go into a failure mode. In a like fashion, movement of the slidable contact element 16 from the second position to the first position will cause migration of the material of the fixed contact element 10 onto the insulative portion 24.
  • the fixed contact element 10 is embedded in the in ulative base (which may be a cylindrical supporting body having a plurality of fixed contact elements embedded within grooves extending along its periphery) so that its top surface and the surface of insulative portion 24 are substantially flush, enabling an easy sliding motion of the slidable contact element 16.
  • the in ulative base which may be a cylindrical supporting body having a plurality of fixed contact elements embedded within grooves extending along its periphery
  • the insulative base is made of a moldable plastic
  • the usual method of manufacturing requires that the fixed contact element positioned before and maintained in that position during the molding of the base. Since the fixed and slidable contact elements are usually relatively small and since positioning items in a molding process inherently causes manufacturing difficulties, the structure shown in FIG. 1 is difficult to produce, causes higher manufacturing costs and is responsible for an undesirably high rejection rate, since a misplaced, mislocated or misaligned fixed contact element causes rejection of the entire molded structure.
  • FIG. 2 an array of cooperating fixed and slidable contact elements is illustrated to overcome the problems'of the prior art and comprises three fixed contact elements 36, 38 and 40 and two slidable contact elements 30 and 32 which are connected by an arm 34.
  • fixed contact element 36 has a hook portion 42 (better seen in FIG. 8, designated 42) so that the fixed contact element 38 and the hook portion 42 of the fixed elongated element 36 are longitudinally aligned along the elongated path that the slidable contact element 30 traverses from a first position to a second position as explained above in connection with FIG. 1.
  • the improved contact assembly of FIG. 2 includes a cam in the form of a guide ramp 44 which may comprise a level surface 46 and two sloping surfaces 48 and 50 and is adapted to support the slidable contact element 30 during a portion of its movement from its first to second positions.
  • a lateral portion 52 preforming the function of a cam follower is connected to the slidable contact element 30.
  • the cam follower 52 extends like an outstretched arm to slide along the guide ramp 44 so as to cause positive disengagement of the slidable contact element 30 from the hook portion 42 when the slidable contact element is moving from its first position to its second position and to cause positive disengagement of the slidable contact element from the fixed contact 38 when the slidable contact element is moving from its second position to its first position.
  • the positive disenagement will eliminate fixed contact element material migration and greatly reduce the effects of electrical arcing.
  • FIG. 5 there is illustrated a common cylindrical switch configuration.
  • the switch is mounted to a panel 60 and comprises a spring biased pushbutton actuator 62 which is directly connected to the slidable contact elements (not shown in FIG. 5) causing the slidable contact elements to be moveable between their first and second positions.
  • the engagement of the fixed and slidable contact elements takes place within housing 64 with the electrical signals being passed from the fixed contact elements to pins 66 which may be integral extensions of'the fixed contact elements.
  • the switch may be adapted to be plugged into a socket receptacle 68 having terminal pins 70' which may be adapted to connect to a Wiring harness (not shown).
  • FIG. 6 there is shown an enlarged partially broken away portion of a switch configuration as shown in FIG. 5 and located within the housing 64.
  • pins 66 are shown supported by a base support 76 with three of the pins integral with the three fixed contact elements 36, 38' and 40'.
  • the prime numbers in FIG. 6 designate elements which correspond to the elements shown in FIG. 2.
  • the fixed contact element 36' has a hook portion 42' which is ali ned longitudinally with the fixed contact element 38'.
  • Slidably disposed on the fixed contact elements are two slidable contact elements 30' and 32' with slidable contact element 30' having a lateral portion 52 for slidably engaging and being supported by a guide ramp 44.
  • the base support 76 comprises a generally cylindrical body of insulative material such as moldable plastic having two portions.
  • a first portion includes a shoulder 78 and a cylindrical plate 80 each having an annular array of apertures (not shown) while the second portion comprises a cylindrical body 82 having a plurality of longitudinal grooves 83 about its periphery extending from a first end 84 to the shoulder 78 and in alignment with the apertures through the shoulder 78 and the plate 80.
  • the grooves form elongated paths which define and confine the movement of the slidable contact elements 30 and 32'.
  • a plurality of such fixed contact elements are disposed in the grooves about the body 82 and are organized to form groups of three.
  • a large number of various combinations of fixed and slidable contact elements may be used, for example, if the fixed contact elements form groups of two, a single-pole, single-throw switch operation is achieved. If, as shown in FIG. 2, the fixed contact elements form a single group of three, a singlepole double-throw switch operation is achieved. If a pair of the three-group fixed contact elements is used, as well as a pair of two-group slidable contact elements, a double-pole, double-throw switch arrangement is achieved.
  • a variety of other combinations of fixed and slidable contact elements may be included and as the number of contact elements increase or decrease, so may the diameter of the body 82. By adjusting the relative longitudinal lengths or positions of the fixed contact elements switching action may be multipolar break-before-make or make-before-break or any other desired arrangement.
  • the guide ramp 44 Disposed immediately adjacent and paralleling the grooves 83 in which accommodates the fixed contact elements of each group corresponding to fixed contact element 38' and hook portion 42 of fixed contact element 36 are cams exemplified by the guide ramp 44.
  • the guide ramp may be formed about the periphery of body 82 and located between selected grooves (not shown) or may be formed on a second element as shown in FIGS. 6 and 8 such as a cylindrical shaped base cap 90 of insulative material having a plurality of longitudinal slots 91 and a plurality of guide ramps 44'.
  • the base cap 90 may be positioned about the body 82 with the longitudinal slots 91 aligned over or opposite the grooves 83 containing the fixed contact elements while the guide ramps 44 are psitioned adjacent the grooves in which hook portions 42' and fixed contact elements 38 are situated.
  • the pushbutton actuator 62 In operation of the switch the pushbutton actuator 62, FIG. 5, is usually spring biased in the position as shown in FIG. so that the slidable contact elements 30' and 32, FIG. 6 are located in their first position with slidable contact elements 30' and 32 engaging or contacting respectively hook portion 42' and fixed contact element 40 providing an electrical connection between the fixed contact elements 36 and 40 by way of the slidable contact elements and the arm 34.
  • the pushbutton actuator 62 (FIG. 5) is depressed the slidable contact elements 30 and 32' assume their second position shown in dashed lines with slidable contact elements 30 and 32' engaging respectively fixed contacts 38' and 40 wherein electrical connection is made between the fixed contact elements 38' and 40.
  • the lateral portion 52' will engage the guide ramp 44' causing a positive disengagement of the slidable contact element 30' from either the fixed contact element 38' or the hook portion 42 of the fixed contact element 36'.
  • the lateral portion 52' slides up sloping surface 50 along level surface 46' and down sloping surface 48.
  • a preferred method of manufacturing the electrical switch of the embodiment shown in FIG. 6 may best be viewed in FIG. 8 and comprises forming the base sup port means 76 of plastic which may be injection molded into a configuration including the plate 80 having a plurality of apertures, the shoulder 78 integral therewith and the aperture extending therethrough and the body portion 82 having the plurality of longitudinal peripheral grooves 83.
  • the fixed contact elements 36, 38 and 40 of FIG. 2 may be stamped from sheet metal and inserted into their respective grooves. As shown in FIGS. 2 and 6 the fixed contact elements and the pins 66 are made integral. Union is achieved by slidably inserting each contact-pin stamping into a groove and through the aligned apertures in the shoulder 78 and the plate 80. It is noted in FIG.
  • the contact-pin stampings have a slight bend 92 which is formed to abut an interior angular flange (not shown) formed in the plate 80 so as to prevent further longitudinal movement of the fixed contact-pin stamping in the direction of the plate 80.
  • the base cap having its plurality of longitudinal slots 91 and plurality of guide ramps such as exemplified by 44 is positioned about the body 82 with the slots aligning opposite the grooves for exposing the fixed contact elements and with the guide ramps aligning adjacent the grooves having the fixed contact elements 38' and hook portion 42 disposed therein.
  • FIG. 3 there is shown a portion of an embodiment which differs from that described above and comprises a fixed contact element similar in structure to the fixed contact element 40 of FIG. 2 but having an opening 102 through a portion remote from a bend 103 of the fixed contact element 100.
  • a guide ra-mp 104 Located adjacent to the opening and parallel thereto is a guide ra-mp 104 having a level surface 106 and a sloped surface 108.
  • a slidable contact element 110 is supported by the surface 106 of the guide ramp 104 and is shown oppositely disposed from the opening 102 of the fixed contact element so that no electrical engagement is made with the fixed contact 100'.
  • the slidable contact element 110 is movable from a first position as shown in FIG. 3 in which it is supported by the guide ramp 104 and out of engagement with the fixed contact element 100 to a second position as shown in dashed lines and designated 112 wherein the slidable contact element makes electrical contact with the fixed contact element 100.
  • FIG. 4 there is illustrated a fixed Contact element 114 having an opening 116 which is adjacent a bend 117.
  • a guide ramp 118 having a level surface 119 and a sloped surface 121 is oppositely arranged from that shown in FIG. 3 so that when a slidable contact element (not shown) is in its first position it is in electrical contact with the fixed contact element 114; when the slidable contact element is in its second position it is supported by the guide ramp 118, and is oppositely disposed from the opening 116 and thus out of electrical contact with the fixed contact element 114. It is noted that in FIGS.
  • the flat surfaces 106 and 119 are adjacent the openings 102 and 116 respectively though the surface 119 is nearer the bend 117 than is the surface 106 to the bend 103.
  • the fixed contact element 100 is roughly analogous to the fixed contact element 38 in the FIG. 2 embodiment while the fixed contact element 114 is roughly analogous to the fixed contact element 36.
  • FIG. 7 there is shown the slidable and fixed contacts of FIGS. 3 and 4 in the form of an array so as to provide the same switching characteristics as explained for the embodiment shown in FIG. 6.
  • the switch comprises a group of three fixed contact elements 100, 120' and 114.
  • Fixed contact element 114' has an elongated opening 116
  • fixed contact element 100 has an elongated opening 102; the openings 102 and 116 are longitudinally misaligned as will be more fully explained below.
  • Moveably disposed to selectively engage the fixed contacts are three slidable contact elements 121, 122 and 124 all of which are electrically connected to each other by an arm 126.
  • the array of slidable contact elements are moveable between first and second positions so that in a first position slidable contact element 124 engages fixed contact element 114 thereby making electrical connection, slidable contact element 122 electrically engages fixed contact element 120 while slidable contact element 121 is disposed opposite aperture 102' and is supported by the guide ramp 118'; hence, when the slidable contact elements are in their first position electrical engagement is made between the fixed contact element 120 and the fixed contact element 114'.
  • the slideable contact element 124 is supported by a guide ramp 104' and is located opposite the aperture 116 so as to be out of engagement with the fixed contact element 114 while slidable contact element 122 electrically engages the fixed contact element 120 and the slidable contact element 121 electrically engages fixed contact element 100 so that the fixed contact element 120 is electrically connected to the fixed contact element 100'.
  • the location of the openings, one in each of the positions of the slidable contact elements illustrates the meaning of the term longitudinally misaligned.
  • the guide ramps shown in FIG. 7 selectively support the respective slidable contact elemerits so as to positively disengage the slidable contact elements from the fixed contact elements thereby preventing fixed contact element material migration and reducing the effects of electrical arcing.
  • the FIG. 7 embodiment comprises a base support means 130 similar in structure to the base support means 76 of the FIG. 6 embodiment having a plate 132, a shoulder 134 both having aligned apertures therethrough, and an upper body 136 having a plurality of longitudinal peripheral grooves which receive the fixed contact elements.
  • the guide ramps adjacent to and parallel with the grooves receiving the fixed contacts 100 and 114' in one molding operation so as toobviate the need for a base cap as was disclosed for the FIG. 6 embodiment (though a base cap may be used if desired),
  • the fixed contact elements may be stamped as was described for the FIG. 6 embodiment so as to form a contact-pin combination which may be inserted into the respective grooves and through the apertures of the plate 132 and the shoulder 134 as explained above in regard to the FIG. 6 embodiment.
  • An electrical contact assembly comprising:
  • said guiding and supporting means is positioned adjacent and parallel to said first groove.
  • An improved electrical contact assembly of the type having fixed and slidable contact elements comprising:
  • (e) means including a sloped portion, for guiding and supporting said slidable contact element, said sloped portion being disposed along said elongated path wherein said slidable contact element is movable along said elongated path to contact alternately said first fixed contact element and said second fixed contact element and said guiding and supporting means cooperates with said laterally extending arm to guide and support said slidable contact element out of electrical contact with said first and second fixed contact elements.
  • An improved electrical contact assembly as claimed in claim 4 including:
  • An improved electrical contact assembly of the type having fixed and slidable contact elements comprising:
  • said slidable contact element having a lateral portion for slidably contacting said sloped portion of said guiding and supporting means for moving said slidable contact element into and out of electrical contact with said fixed contact element.
  • each one of said second slidable contact elements is movable in the corresponding (d) a plurality of means, including sloped portions
  • each of said supporting and guiding means is positioned adjacent and parallel to a corresponding groove in which a pair of said first 7.
  • An improved electrical contact assembly as claimed in and second fixed contact elements are disposed, said claim 6 including: plurality of guiding and supporting means supporting (a) second and third fixed contact elements supported said plurality of first slidable contact elements when by said base positioned along second and third elonsaid first slidable contact elements are disposed begated paths, respectively, said second and said third 10 tween said first and second positions; and elongated paths being parallel to said first men- (e) each of said plurality of slidable contact elements tioned elongated path; has a lateral portion thereof for slidably engaging a (b) second and third slidable contact elements consloped portion of a corresponding supporting and nected to and moving parallel with first mentioned guiding means.
  • An improved electrical contact assembly comprisable contact elements being moveable along said ing: second and third elongated paths respectively; (a) an insulative cylindrical base support having a (c) a second means for guiding and supporting said plurality of longitudinally extending parallel grooves third slidable contact element, located adjacent and disposed about the periphery of said base; parallel to said third elongated path; and wherein (b) a plurality of first, second and third fixed contact (d) said third fixed contact element has an aperture elements supported by said base and disposed in said therein; and grooves, each of said elements is received by one of (e) said first mentioned, second and third slidable conthree adjacent grooves, each of said first and third tact elements are moveable from a first position to fixed contact elements has an aperture therein; a second position so that when in said first position (c) a plurality of first, second and third slidable consaid first mentioned slidable contact element engages tac
  • An improved electrical contact assembly of the type ture in one of said third fixed contact elements wherehaving fixed and slidable contact elements comprising: by an electrical path is created between one of said (a) an insulative cylindrical base support having a first fixed contact elements and the corresponding plurality of longitudinally extending parallel grooves one of second fixed contact elements, and in said disposed about the periphery of said base; second position each one of said first slidable con- (b) a plurality of first, second and third fixed contact tact elements is supported by a corresponding one of elements supported by said base and disposed in said said guiding and supporting means adjacent an apergrooves, one pair of said first and second fixed contoure of one of said first fixed contact elements and tact elements are disposed in the same groove with each one of said second slidable contact elements said first fixed contact element being longitudinally engages a corresponding one of said second fixed conspaced from said second fixed contact element and tact elements and each one of said third slidable

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  • Slide Switches (AREA)
US747280A 1968-07-24 1968-07-24 Electrical contact assembly with ramp guide Expired - Lifetime US3499126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74728068A 1968-07-24 1968-07-24

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US3499126A true US3499126A (en) 1970-03-03

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US747280A Expired - Lifetime US3499126A (en) 1968-07-24 1968-07-24 Electrical contact assembly with ramp guide

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Country Link
US (1) US3499126A (xx)
BE (1) BE734489A (xx)
CH (1) CH491484A (xx)
DE (1) DE1921160B2 (xx)
FR (1) FR2013569A1 (xx)
GB (1) GB1245075A (xx)
NL (1) NL6907277A (xx)
SE (1) SE367274B (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721779A (en) * 1971-06-04 1973-03-20 Indak Mfg Corp Sliding action electrical switch with ramp portions between contacts and insulating strips
EP0080029A1 (de) * 1981-11-19 1983-06-01 Wolfgang Dipl.-Ing. Priesemuth Schaltkontaktanordnung und Verfahren zu ihrer Herstellung
US4401862A (en) * 1981-05-29 1983-08-30 Bernard Valentin Electrical switch with sliding contacts
US4841105A (en) * 1988-04-11 1989-06-20 Amp Incorporated Slide switch configured as an integrated circuit package
US4950847A (en) * 1989-07-13 1990-08-21 Billman Timothy B Sealed printed circuit board switch
FR2770657A1 (fr) * 1997-11-04 1999-05-07 Sauvageau Commercy Soudure Dispositif de commande de valves notamment pour chalumeau
US20040089523A1 (en) * 2000-07-03 2004-05-13 Van Den Akker Wouter Franciscus Switch with auxilliary and main contacts
US20060011569A1 (en) * 1999-09-01 2006-01-19 Moon-Key Han Solid soaps kept together with liquid soap by a connecting and keeping unit

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928104A1 (de) * 1979-07-12 1981-01-22 Honeywell Gmbh Elektrischer schalter
DE3402372A1 (de) * 1984-01-25 1985-08-01 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Elektrisches schaltelement
JPS61151214U (xx) * 1985-03-09 1986-09-18
DE3917864A1 (de) * 1989-06-01 1990-12-06 Marquardt Gmbh Schalteranordnung
DE3924109A1 (de) * 1989-07-20 1991-01-31 Merit Elektrik Gmbh Mehrfachschalter, insbesondere ein-, aus- und/oder umschalter fuer kraftfahrzeuge und artverwandte anwendung
DE4020821C2 (de) * 1990-06-29 2001-08-02 Teves Gmbh Alfred Elektrischer Schalter
DE19530209A1 (de) * 1995-08-17 1997-02-20 Abb Patent Gmbh Elektrischer Schalter
DE19830232A1 (de) * 1998-07-07 2000-01-13 Abb Research Ltd Stromkontaktanordnungen eines Stromschalters
JP4637298B2 (ja) 2001-03-12 2011-02-23 ナイルス株式会社 スイッチ
CN107516611A (zh) * 2016-06-16 2017-12-26 博西华电器（江苏）有限公司 开关装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299226A (en) * 1965-10-22 1967-01-17 Oster Mfg Co John Electrical switch for food blender with improved contact detent structure
US3319016A (en) * 1966-05-20 1967-05-09 Indak Mfg Corp Multi-position electrical switch with improved guide rail and movable contact structue
US3329792A (en) * 1965-04-01 1967-07-04 Litton Prec Products Inc Multicircuit pushbutton switches
US3378654A (en) * 1967-02-27 1968-04-16 Indak Mfg Corp Electrical switch with multiple contact rails

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329792A (en) * 1965-04-01 1967-07-04 Litton Prec Products Inc Multicircuit pushbutton switches
US3299226A (en) * 1965-10-22 1967-01-17 Oster Mfg Co John Electrical switch for food blender with improved contact detent structure
US3319016A (en) * 1966-05-20 1967-05-09 Indak Mfg Corp Multi-position electrical switch with improved guide rail and movable contact structue
US3378654A (en) * 1967-02-27 1968-04-16 Indak Mfg Corp Electrical switch with multiple contact rails

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721779A (en) * 1971-06-04 1973-03-20 Indak Mfg Corp Sliding action electrical switch with ramp portions between contacts and insulating strips
US4401862A (en) * 1981-05-29 1983-08-30 Bernard Valentin Electrical switch with sliding contacts
EP0080029A1 (de) * 1981-11-19 1983-06-01 Wolfgang Dipl.-Ing. Priesemuth Schaltkontaktanordnung und Verfahren zu ihrer Herstellung
US4841105A (en) * 1988-04-11 1989-06-20 Amp Incorporated Slide switch configured as an integrated circuit package
US4950847A (en) * 1989-07-13 1990-08-21 Billman Timothy B Sealed printed circuit board switch
FR2770657A1 (fr) * 1997-11-04 1999-05-07 Sauvageau Commercy Soudure Dispositif de commande de valves notamment pour chalumeau
US20060011569A1 (en) * 1999-09-01 2006-01-19 Moon-Key Han Solid soaps kept together with liquid soap by a connecting and keeping unit
US20040089523A1 (en) * 2000-07-03 2004-05-13 Van Den Akker Wouter Franciscus Switch with auxilliary and main contacts
US6831239B2 (en) * 2000-07-03 2004-12-14 Holec Holland N.V. Switch with auxiliary and main contacts

Also Published As

Publication number Publication date
GB1245075A (en) 1971-09-02
CH491484A (de) 1970-05-31
FR2013569A1 (xx) 1970-04-03
NL6907277A (xx) 1970-01-27
DE1921160A1 (de) 1970-08-20
DE1921160B2 (de) 1972-02-10
SE367274B (xx) 1974-05-20
BE734489A (xx) 1969-11-17

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