EP2459349B1 - Instrument multibit dote de mecanismes de commande a ressort - Google Patents

Instrument multibit dote de mecanismes de commande a ressort Download PDF

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Publication number
EP2459349B1
EP2459349B1 EP10807826.2A EP10807826A EP2459349B1 EP 2459349 B1 EP2459349 B1 EP 2459349B1 EP 10807826 A EP10807826 A EP 10807826A EP 2459349 B1 EP2459349 B1 EP 2459349B1
Authority
EP
European Patent Office
Prior art keywords
bit
retraction
spring loaded
extension
trigger member
Prior art date
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Active
Application number
EP10807826.2A
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German (de)
English (en)
Other versions
EP2459349A4 (fr
EP2459349A1 (fr
Inventor
Fern Beauchamp
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.)
GRAND, GERARD
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Individual
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Publication of EP2459349A1 publication Critical patent/EP2459349A1/fr
Publication of EP2459349A4 publication Critical patent/EP2459349A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/02—Screwdrivers operated by rotating the handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00—Combination or multi-purpose hand tools
    • B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
    • B25F1/04—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements wherein the elements are brought into working positions by a pivoting or sliding movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/08—Handle constructions with provision for storing tool elements
    • B25G1/085—Handle constructions with provision for storing tool elements for screwdrivers, wrenches or spanners

Definitions

  • the present invention relates to a multi-bit apparatus having spring loaded actuation mechanisms, and more particularly to a multi-bit tool having spring loaded actuation mechanisms.
  • Tools such as multi-bit screwdrivers, that have a plurality of tool bits that are selectively usable one at a time, are well-known.
  • one tool bit is manually selected at a time via a sliding button to extend forwardly out of a housing through a bit chuck to an extended in-use configuration.
  • An actuation mechanism causes the selected tool bit to move to its extended in-use configuration in response to the sliding button moving forwardly, and causes the selected tool bit to move back to its retracted configuration in response to the sliding button moving rearwardly.
  • US Patent No. 2,071,510 discloses a selective magazine pencil having a number of lead holders rotatably mounted in a case, within tubes. Pressure springs act upon the lead holders.
  • Guide pins of the lead holders extend through slots in the tubes, which are aligned with slots in an inner sleeve.
  • a tube length defines a cam face. The guide pins ride up the cam face when the inner sleeve is rotated. On reaching a drop edge of the cam face, a subsequent rotation can bring the lead holder into a position for writing, under the action of the spring.
  • an apparatus having a plurality of individually selectable working elements as claimed in claim 1.
  • the preferred embodiment multi-bit tool 20 comprises a housing 30, a substantially rigid main frame member 40, spring loaded actuator mechanisms 60, a plurality of working elements 72 as part of bit assemblies 70, and a bit selector 90.
  • the preferred embodiment of the present invention is an apparatus that in its preferred embodiment is in the form of a multi-bit tool 20 that comprises a substantially annular housing 30 having a central interior cavity 32 and a bit chuck 34 with a bit-receiving opening 36.
  • the substantially annular housing 30 defines a central longitudinal axis 'L'.
  • the housing 30 acts as the handle for the multi-bit tool 20, and may be of any suitable shape.
  • the substantially annular housing 30 comprises a forward cone portion 38 and a central handle portion 39 secured one to the other in selectively separable relation by means of suitable threaded fasteners 31 for the sake of manufacturing convenience and to permit subsequent access to the central interior cavity 32 of the substantially annular housing 30.
  • the central handle portion 39 has a plurality of radially arcuate plates 37p disposed at the front end thereof. In the preferred embodiment as illustrated, there are five arcuate plates 37p, with each arcuate plate 37p separated from the two adjacent arcuate plates 37p by a pin receiving slot 37s, the purpose of which will be discussed in greater detail subsequently.
  • the substantially annular housing 30 also has an end cap 33 secured to the back end of the substantially annular housing 30 by means of suitable threaded fasteners 35 for the sake of manufacturing convenience and to permit subsequent access to the central interior cavity 32 of the substantially annular housing 30.
  • substantially rigid main frame member 40 that has a front end 42 and a back end 44.
  • the substantially annular housing 30 and the substantially rigid main frame member 40 are each separate and distinct pieces.
  • the housing 30 and the substantially rigid main frame member 40 are structurally interconnected one to the other such that the substantially rigid main frame member 40 precludes significant torsional deformation of the housing 30.
  • the substantially rigid main frame member 40 is retained within the interior cavity 32 of the housing 30 to be generally aligned along the longitudinal axis 'L'.
  • the substantially rigid main frame member 40 a central core 46 with the plurality of actuator separators 43 extend radially outwardly from the central core 46, and also defines a plurality of longitudinal channels 41, as can readily be seen in the figures.
  • the substantially rigid main frame member 40 is disposed within the housing 30 such that each of the plurality of longitudinal channels 41 is generally aligned along the longitudinal axis 'L'.
  • the plurality of actuator separators 43 preferably extend radially outwardly from the longitudinal axis 'L'.
  • the central core 46 extends forwardly along the longitudinal axis 'L' past the front of the proximal wall portions 48.
  • the central core 46 is tapered at its front end 47 to accommodate the passage of the tool bits 72 therepast.
  • the substantially rigid main frame member 40 is made from metal or a suitable plastic. Any other suitable material or combination of materials could be used.
  • the plurality of spring loaded actuator mechanisms 60 operatively mounted within the interior cavity 32 of the housing 30, one spring loaded actuator mechanism 60 per trigger member 69, and vice versa.
  • the plurality of spring loaded actuator mechanisms 60 are carried in rigidly retained relation by the substantially rigid main frame member 40 within the interior cavity 32 of said housing 30.
  • Each spring loaded actuator mechanism 60 is mounted in rigidly retained relation within one channel 41 of the substantially rigid main frame member 40.
  • the plurality of spring loaded actuator mechanisms 60 are mounted within the substantially rigid main frame member 40 such that contact of each spring loaded actuator mechanism 60 with the other spring loaded actuator mechanisms 60 is precluded.
  • the spring loaded actuator mechanisms 60 comprise sub-assemblies containing one or more springs and other components and the like.
  • the spring loaded actuator mechanisms comprise assembled individual components within the housing 30 and supported by the housing 30 and/or the substantially rigid main frame member 40.
  • Cartridge type spring loaded actuator mechanisms 60 are well known and can be found in various prior art patent documents such as United States Patent No. 2,854,745 , the teachings of which are incorporated herein by reference.
  • Each spring loaded actuation mechanism 60 has an element extending configuration and an element retracting configuration.
  • the working element 72 In the element extending configuration, the working element 72 is caused to move to the extended in-use position. In the element retracting configuration, the working element 72 is caused to move to the retracted position.
  • the working element 72 is part of a bit assembly 70 and specifically comprises a tool bit 72.
  • Each spring loaded actuator mechanism 60 has a carriage member 66 that is movable between a rearward position, as indicated by arrow 'A' in Figure 9 , and a forward position, as indicated by arrow 'B' in Figure 10 , and a trigger member 69 that is slidably movable between an extension triggering position, as is indicated by arrow 'C' in Figure 9 , and a retraction triggering position, as is indicated by arrow 'D' in Figure 9 .
  • the spring loaded actuation mechanism 60 is urged to its retracting configuration and the carriage member 66 is moved to its rearward position by movement of the trigger member 69 to its retraction triggering position, similarly, the spring loaded actuation mechanism 60 is urged to its extended in-use configuration and the carriage member 66 is moved to its forward position by movement of the trigger member 69 to its extension triggering position.
  • Each trigger member 69 comprises a cam follower 69f that engages a cooperating cam surface 93 on the annular collar member 90. Further, each trigger member 69 is mounted for longitudinal sliding movement over a short distance, within the associated spring loaded actuator mechanism 60.
  • the cam follower 69f comprises a raised cam follower 69f projecting outwardly from a base portion 69g.
  • the raised cam follower 69f has a height of about 2 millimeters (mm) in order to not protrude too far, as it must be readily accommodated within the ridged outer ring 90a.
  • the cam followers 69f are engaged by an extension portion 92 on the bit selector 90, as will be discussed in greater detail subsequently.
  • the spring loaded actuator mechanisms 60 are substantially straight along their length. Each spring loaded actuator mechanism 60 has an elongate substantially straight slot 62 therein. As the carriage member 66 travels along its spring loaded actuator mechanism 60, a portion of the carriage member 66 rides along the elongate slot 62 in the spring loaded actuator mechanism 60.
  • the multi-bit tool 20 also comprises a plurality of working elements 72 operatively mounted within the housing 30.
  • each working element comprises a tool bit, but alternatively could comprise other suitable types of working elements, such as parts of a toy, and so on.
  • Each bit assembly 70 has a tool bit 72 at a front end and is operatively mounted within the housing 30 for movement by the actuator mechanism 60 between a retracted position corresponding to the retracted configuration of the actuator mechanism 60 and the rearward position of the carriage member 66, and a forwardly extended in-use position corresponding to the forwardly extended in-use configuration of the actuator mechanism 60 and the forward position of the carriage member 66. In the forwardly extended in-use configuration, the tool bit 72 extends outwardly from the housing 30 through the opening 36 of the bit chuck 34.
  • each tool bit 72 is substantially cylindrically shaped, in order to accommodate the passage of bits 72 past the tapered front end 47 of the central core 46.
  • Each bit assembly 70 is operatively connected to the carriage member 66 on a corresponding spring loaded mechanism 80 for cooperative movement therewith.
  • the corresponding spring loaded actuator mechanism 60 is retained substantially in its correct form by the substantially rigid main frame member 40.
  • the multi bit tool 20 further comprises the bit selector 90 having an extension portion 92 for engaging each trigger member.
  • the bit selector 90 is in the form of an annular collar mounted on the housing 30 for manual rotation about the longitudinal axis 'L'. The bit selector 90 is thereby mounted on the housing 30 for movement through an actuation position for each actuation mechanism 60.
  • the annular collar 90 comprises an annular ring shaped main body that comprises a ridged outer ring 90a is secured to the internal cam ring 90b for co-rotation around the housing 30, about the longitudinal axis 'L'.
  • the internal cam ring 90b fits over the five arcuate plates 37p in reasonably close fitting but freely rotatable relation.
  • the extension portion 92 comprises an extension cam surface 93 disposed on the annular collar 90.
  • the extension cam surface 93 has a single lobe 91 for causing the trigger members 69 to move to their respective extension triggering positions.
  • the single lobe 91 has a leading surface 93a and a trailing surface 93b adjoined by a peak 93c.
  • the leading surface 93a of the single lobe 91 has a slope of about forty five (45) degrees.
  • the angle of forty five (45) degrees has been found to be suitable for moving the trigger members 69 more than a required threshold distance of about twelve (12) millimeters along the longitudinal axis 'L' while still fitting in five bit assemblies 70 and actuation mechanisms 60 within the main body 30 around the longitudinal axis 'L'.
  • the extension portion 92 of the bit selector 90 engages a corresponding trigger member 69, thereby moving the trigger member 69 to the extension triggering position, thus urging the corresponding spring loaded actuation mechanism 60 to the element extending configuration, thereby moving the corresponding working element 72 from its retracted position to its extended in use position.
  • the bit selector 90 further comprises a retraction portion 94.
  • the retraction portion 94 is disposed at the same general longitudinal area of the bit selector 90 as is the single lobe 91, and extends much of the way around the diameter of the bits selector 90.
  • the retraction portion 94 engages the trigger member 69 of the spring loaded actuation mechanism 60 that has its tool bit 72 in its extended in-use position. Such engagement of the trigger member 69 by the retraction portion 94 of the bit selector 90 occurs when the bit selector 90 is moved from a neutral position to a retraction position.
  • the trigger member 69 is thereby moved to the retraction triggering position, thus urging the spring loaded actuation mechanism corresponding to the working element 72 that is in its extended position to the element retracting configuration.
  • the retraction portion 94 of the bit selector 90 thereby moves the corresponding working element 72 in its extended in use position moved to its retracted position.
  • a neutral position might be anywhere between the retraction positions, and in that case would include the extension triggering positions. It is also contemplated that alternatively the neutral positions might be elsewhere, including positions that are longitudinally displaced from the presently shown protraction positions. In the preferred embodiment, as illustrated, there is a plurality of neutral positions, with a neutral position being disposed between each one of the actuation positions. Accordingly, the movement of the bit selector from the neutral position to the retraction position comprises the movement of the bit selector between a plurality of actuation positions. The retraction portion engages the trigger members between the actuation positions.
  • the retraction portion 94 actually engages the trigger member 69 of the spring loaded actuation mechanism 60 that has its working element 72 in an extended in-use position, when the bit selector 90 is moved from the neutral position to the retraction position. Further, the retraction portion 94 causes any working element 72 not in its retracted position to be moved to its retracted position before another working element 72 is moved to its extended in use position.
  • the retraction portion 94 comprises a retraction cam surface 95 disposed on the annular collar 90.
  • the extension cam surface 93 and the retraction cam surface 95 face each other with a cam follower receiving gap 96 in between.
  • the extension cam surface 93 and the retraction cam surface 95 are spaced apart along the longitudinal axis 'L' by a distance slightly greater than the width of the cam follower 69f
  • a portion of the cam follower receiving gap 96 is open to the exterior of the annular collar 90 and a portion of the cam follower receiving gap 96 is closed off to the exterior of the annular collar 90 by an outer wall portion 97.
  • the reason for this is for ease of manufacturing.
  • the extension cam surface 93 and the retraction cam surface 95 extend fully around the periphery of the annular collar 90. Accordingly, the bit selector 90 can be turned continuously about the longitudinal axis 'L' to contact and move the trigger members 69 to their respective extension triggering positions and retraction triggering positions.
  • FIG. 19 show the multi-bit tool 20 according to the present invention in use.
  • all of the working elements 72 have been retracted to their respective retracted positions. Only three working elements are shown for the sake of clarity, namely a first working element 72a, a second working element 72b, and a third working element 72c.
  • the first trigger member 69a is about to be engaged by the leading surface 93a of the extension cam surface 93 on the single lobe 91 as the annular collar 90 is rotated in the direction of arrow 'E'.
  • the annular collar 90 has been continued to rotate in the direction as shown by arrow 'F' and the first trigger member 69a has moved up the leading surface 93a of the extension cam surface 93 of the single lobe 91 and is nearly at the peak 93c.
  • the first trigger member 69a has just reached the threshold position of the first actuator mechanism 60a and accordingly the first actuator member 60a is about to move the corresponding first working element 72a to its extended in-use position.
  • Figure 21 shows the first trigger member 69a having reached the peak 93c of the extension cam surface 93, as caused by continued rotation of the annular collar 90 in the direction of arrow 'G'. Also shown is the first tool bit 72 of the first working element 72a in its extended in-use position.
  • FIG 22 shows the annular collar 90 having continued to rotate in a direction as indicated by arrow 'H', to thereby move the first trigger member 69a moving towards the bottom of the trailing surface 93b of the extension cam surface 93 on the single lobe 91, as moved there by the leading edge 95a of the retraction cam surface 95.
  • the first working element 72a is thereby being retracted from its extended in-use position to its retracted position.
  • the second trigger member 69b is being pushed up the leading edge 93a of the extension cam surface 93.
  • FIG 23 shows the annular collar 90 having been turned slightly more in the direction of arrow 'I', and the second trigger member 69b having travelled up the leading edge 93a of the extension cam surface 93a slight bit more, just to the threshold distance for triggering corresponding second actuation mechanism 60b.
  • the second working element 72b has started to move forwardly from its retracted position to its extended in-use position.
  • the present invention comprises a multi-implement apparatus that could be a toy that functions in an analogous manner to the multi-bit tool 20 as described.
  • the present invention provides a multi-bit tool having spring loaded actuation mechanisms, wherein the jamming of the tool bit assemblies and the spring loaded actuation mechanisms is significantly reduced, and perhaps almost eliminated, and which multi-bit tool is more ergonomic and therefore easier to use than prior art multi-bit tools, all of which features are unknown in the prior art.
  • trigger members 69 might be individually selectable for either extension or retraction of the working elements 72.
  • the bit selector 90 might be used to cause extension of the working elements 72, but other means might be used to cause the retraction of the element 72.
  • the working element 72 could be pens, parts of a toy, lipstick, and many other types of elements, and accordingly, the apparatus according to the present invention might be a tool, a toy, and so on

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Claims (14)

  1. Appareil (20) ayant une pluralité d'éléments de travail (72) sélectionnables individuellement, ledit appareil comprenant :
    un boîtier (30) ayant un mandrin d'embout (34) avec une ouverture de réception d'embout (36) et définissant un axe longitudinal (L) ;
    une pluralité d'éléments de travail (72) montés de manière fonctionnelle à l'intérieur dudit boîtier (30) et chaque élément de travail étant déplaçable indépendamment entre une position rétractée et une position déployée d'utilisation ;
    une pluralité de mécanismes d'actionnement à ressort (60) montés de manière fonctionnelle à l'intérieur dudit boîtier (30), un mécanisme d'actionnement pour chaque élément de travail (72) ;
    dans lequel chaque mécanisme d'actionnement à ressort (60) a une configuration d'extension d'élément dans laquelle ledit élément de travail (72) est amené à se déplacer vers ladite position déployée d'utilisation et une configuration de rétraction d'élément dans laquelle ledit élément de travail (72) est amené à se déplacer vers une position rétractée ;
    caractérisé en ce que
    chaque mécanisme d'actionnement à ressort (60) a un élément de déclenchement (69) déplaçable entre une position de déclenchement d'extension et une position de déclenchement de rétraction, et dans lequel ledit mécanisme d'actionnement à ressort (60) est poussé vers sa configuration de rétraction par un déplacement dudit élément de déclenchement (69) vers sa position de déclenchement de rétraction et ledit mécanisme d'actionnement à ressort (60) est poussé vers sa configuration d'extension d'utilisation par un déplacement dudit élément de déclenchement (69) vers sa position de déclenchement d'extension ; et,
    un sélecteur d'embout (90) ayant une partie d'extension (92) pour s'engager avec chaque élément de déclenchement (69), et monté sur ledit boîtier (30) pour effectuer un déplacement par une position d'actionnement pour chaque mécanisme d'actionnement (60) ;
    dans lequel, dans chaque position d'actionnement, ladite partie d'extension (92) dudit sélecteur d'embout (90) s'engage avec un élément de déclenchement (69) correspondant, déplaçant donc ledit élément de déclenchement vers ladite position de déclenchement d'extension, poussant ainsi le mécanisme d'actionnement à ressort (60) correspondant vers ladite configuration d'extension d'élément, déplaçant donc l'élément de travail (72) correspondant de sa position rétractée à sa position déployée d'utilisation.
  2. Appareil de la revendication 1, dans lequel ledit sélecteur d'embout comprend un collier annulaire (90) monté sur ledit boîtier pour une rotation manuelle autour dudit axe longitudinal.
  3. Appareil de la revendication 2, dans lequel ledit collier annulaire comprend un corps principal annulaire en forme de bague (90a, b).
  4. Appareil de la revendication 3, dans lequel ledit élément de déclenchement comprend un suiveur de came (69f) sur une partie de base (69g).
  5. Appareil de la revendication 4, dans lequel ledit suiveur de came comprend un suiveur de came dressé faisant saillie vers l'extérieur à partir de ladite partie de base.
  6. Appareil de la revendication 4, dans lequel ladite partie d'extension comprend une surface de came d'extension (93) disposée sur ledit collier annulaire.
  7. Appareil de la revendication 6, dans lequel ledit sélecteur d'embout comprend en outre une partie de rétraction (94) qui s'engage avec l'élément de déclenchement du mécanisme d'actionnement à ressort dont l'élément de travail est dans sa position étendue d'utilisation, lorsque ledit sélecteur d'embout est déplacé d'une position neutre à une position de rétraction, déplaçant donc ledit élément de déclenchement vers ladite position de déclenchement de rétraction, poussant ainsi le mécanisme d'actionnement à ressort correspondant à l'élément de travail dans sa position déployée vers ladite configuration de rétraction d'élément, déplaçant donc l'élément de travail dans sa position déployée d'utilisation vers sa position rétractée.
  8. Appareil de la revendication 7, dans lequel ladite partie de rétraction s'engage avec l'élément de déclenchement de chaque mécanisme d'actionnement à ressort, lorsque ledit sélecteur d'embout est déplacé de ladite position neutre à ladite position de rétraction, amenant donc tout élément de travail qui n'est pas dans sa position rétractée à être déplacé vers sa position rétractée avant qu'un autre élément de travail ne soit déplacé vers sa position déployée d'utilisation.
  9. Appareil de la revendication 8, dans lequel le déplacement dudit sélecteur d'embout de ladite position neutre à ladite position de rétraction comprend ledit déplacement dudit sélecteur d'embout entre une pluralité de positions d'actionnement.
  10. Appareil de la revendication 9, dans lequel ladite partie de rétraction s'engage avec lesdits éléments de déclenchement entre lesdites positions d'actionnement.
  11. Appareil de la revendication 8, dans lequel ladite partie de rétraction comprend une surface de came de rétraction (95) disposée sur ledit collier annulaire.
  12. Appareil de la revendication 8, dans lequel ladite surface de came d'extension et ladite surface de came de rétraction se font face avec un espace de réception de suiveur de came (96) entre les deux.
  13. Appareil de la revendication 12, dans lequel une partie dudit espace de réception de suiveur de came est ouverte vers l'extérieur dudit collier annulaire et une partie dudit espace de réception de suiveur de came est fermée par rapport à l'extérieur dudit collier annulaire par une partie de paroi externe (97).
  14. Appareil de la revendication 13, dans lequel ladite surface de came d'extension a un seul bossage (91) pour amener lesdits éléments de déclenchement à se déplacer vers leurs positions de déclenchement d'extension respectives.
EP10807826.2A 2009-07-31 2010-07-31 Instrument multibit dote de mecanismes de commande a ressort Active EP2459349B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23010509P 2009-07-31 2009-07-31
US29216610P 2010-01-05 2010-01-05
PCT/CA2010/001178 WO2011017796A1 (fr) 2009-07-31 2010-07-31 Instrument multibit dote de mecanismes de commande a ressort

Publications (3)

Publication Number Publication Date
EP2459349A1 EP2459349A1 (fr) 2012-06-06
EP2459349A4 EP2459349A4 (fr) 2015-04-01
EP2459349B1 true EP2459349B1 (fr) 2017-03-15

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EP10807826.2A Active EP2459349B1 (fr) 2009-07-31 2010-07-31 Instrument multibit dote de mecanismes de commande a ressort

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EP (1) EP2459349B1 (fr)
WO (1) WO2011017796A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3137263B1 (fr) * 2014-05-01 2022-01-19 Gérard Grand Outil à plusieurs embouts doté d'un mécanisme à rochet bidirectionnel
US11975440B2 (en) * 2016-04-04 2024-05-07 James Gregory Brull Lanyard system
WO2022264155A1 (fr) * 2021-06-18 2022-12-22 Mugundhan Harsha Vardhan Mécanisme de chargement de ressort utilisant de multiples ressorts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE647345C (de) * 1935-05-31 1937-07-02 Adolf Waldmann Fa Wechselschreibstift mit einem Drehknopf zum Verschieben der Minentraeger
DE843073C (de) * 1950-12-28 1952-07-03 Willy Schmieglitz Zweifarbstift
US4463788A (en) * 1983-06-09 1984-08-07 Antonio Corona & Associates R & D Ltd. Multiple bit screwdriver
US6502484B2 (en) * 2001-01-22 2003-01-07 Lee Pao-Hsi Screwdriver with easily replaceable bits
US7275466B2 (en) * 2005-03-11 2007-10-02 Duron Plastics Limited Multiple-bit driver with spring-loaded actuation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP2459349A4 (fr) 2015-04-01
EP2459349A1 (fr) 2012-06-06
WO2011017796A1 (fr) 2011-02-17

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