WO2009060257A2 - Dégrafeur - Google Patents

Dégrafeur Download PDF

Info

Publication number
WO2009060257A2
WO2009060257A2 PCT/IB2007/004594 IB2007004594W WO2009060257A2 WO 2009060257 A2 WO2009060257 A2 WO 2009060257A2 IB 2007004594 W IB2007004594 W IB 2007004594W WO 2009060257 A2 WO2009060257 A2 WO 2009060257A2
Authority
WO
WIPO (PCT)
Prior art keywords
staple
engaging members
base member
remover according
engaging
Prior art date
Application number
PCT/IB2007/004594
Other languages
English (en)
Other versions
WO2009060257A3 (fr
Inventor
Robert William Hadden
Original Assignee
Acco Uk Limited
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
Application filed by Acco Uk Limited filed Critical Acco Uk Limited
Priority to PCT/IB2007/004594 priority Critical patent/WO2009060257A2/fr
Publication of WO2009060257A2 publication Critical patent/WO2009060257A2/fr
Publication of WO2009060257A3 publication Critical patent/WO2009060257A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C11/00—Nail, spike, and staple extractors

Definitions

  • the present invention relates to a staple remover and, more particularly, relates to a staple remover for extracting a conventional clinched stationery staple having a central crown portion and two legs extending with arcuate bends from opposite sides of the crown through staple holes in a stack of stapled paper sheets or the like.
  • FIG. 1 A conventional staple of this type is illustrated in Figure 1, where Figure l(a) illustrates a side view of a single staple before insertion into a stack of papers.
  • the staple has a crown part having width W and a pair of legs which extend downwardly from the crown part at opposite ends thereof. Each leg has a length L.
  • Staples of this general type are typically provided as a strip comprising a plurality of such staples for insertion into a magazine of a conventional stapler of a type known per se.
  • the stapler serves to punch the end staple in the strip through all of the sheets of paper provided in a stack such that the ends of the two legs penetrate through the lowermost sheet in the stack and bear against an anvil provided underneath the lowermost sheet, whereupon the two legs are bent inwardly so that the staple adopts a clinched configuration illustrated in Figure l(b).
  • This form of stapling method is very well known.
  • the most commonly used form of staple extractor typically comprises a pair of levers which are pivotally coupled at one end and are movable towards one another at their free ends.
  • a pair of extraction jaws are formed at the movable ends of each lever for engaging the underside of a staple crown in order to lift the staple away from the material, bending the leg parts of the staple outwardly away from their clinched positions as the staple is removed from the stack of papers.
  • Staple extractors of the general type mentioned above are relatively complicated to manufacture as they involve a number of moving parts. Furthermore, staple extractors of the "pincer" type mentioned above also suffer from a disadvantage in operation in that a person using a conventional staple remover of this type must properly align the extraction jaws against a staple prior to closure of the pivo tally- connected levers such that the extraction jaws properly move between the crown of the staple and the uppermost sheet of paper in the stack.
  • the present invention provides an improved staple remover.
  • the present invention provides a staple remover comprising a base member and a plurality of substantially elongate staple-engaging members each having a free-end.
  • the staple-engaging members are arranged so as to be brought to bear against a top sheet in a stack of sheets when the stack is received between the base member and the staple-engaging members.
  • the plurality of staple-engaging members are configured so that the free end of at least one of the staple-engaging members passes between the crown of a staple provided in the stack of sheets and the top sheet as the staple remover is moved across the staple.
  • the plurality of staple-engaging members are tapered so as to narrow towards their respective free-ends. Also in one embodiment, the free end of only one of the plurality of staple-engaging members passes between the crown of the staple and the top sheet as the staple remover is moved across the staple.
  • FIGURE 1 illustrates two views of a generally conventional staple with which the staple remover of the present invention is intended to be used, Figure l(a) illustrating the staple before insertion into a stack of papers, and Figure l(b) illustrating the staple in its clinched form after insertion into the stack of papers;
  • FIGURE 2 is a perspective view of a staple remover in accordance with the present invention.
  • FIGURE 3 is a plan view of a staple-engaging part of the staple remover illustrated in Figure 2;
  • FIGURE 4 is a view corresponding generally to that of Figure 2 illustrating the staple remover positioned over the stapled corner of a stack of papers, in preparation for removal of the staple therefrom;
  • FIGURE 5 is a view corresponding generally to that of Figure 4, illustrating the staple remover in an operative condition in which it is shown removing the staple from the stack of papers.
  • FIG. 1 there is illustrated a generally conventional clincher-type office staple shown in Figure l(a) in its initial form and in Figure l(b) in its clinched form after insertion through one or more sheets of paper using a conventional stapler.
  • the staple 1 comprises a crown part 2 and a pair of legs 3, each depending from a respective end of the crown 2.
  • the staple has a "crown- width" dimension W, and each leg 3 has a length L.
  • FIG. 2 illustrates an embodiment of a staple remover 4 in accordance with the present invention, hi the illustrated embodiment, the staple remover 4 is substantially entirely formed from a single piece of material such as sprung metal, and most preferably sprung steel.
  • the illustrated staple remover 4 comprises a generally planar base member 5 of rectangular form which is connected at one of its shorter sides to an upper member 6 of substantially similar form, via a connecting web 7.
  • the illustrated connecting web 7 is also of generally rectangular form with its longer sides lying coincident with the respective shorter sides of the base member 5 and the upper member 6. The connecting web 7 thereby serves to space the base member 5 and the upper member 6 apart from one another in the initial, relaxed, configuration of the staple remover illustrated in Figure 2.
  • the illustrated staple remover is preferably formed from a single piece of sprung steel and it will therefore be appreciated that the base member 5, connecting web 7 and the upper member 6 are interconnected with one another by simple straight fold lines formed by bending or folding an initial blank cut from the sprung steel.
  • the free end of the upper member 6, illustrated generally by reference numeral 8 is provided with a downwardly-extending connecting web 9 which is again formed by folding the sprung steel material. At its lowermost edge, the connecting web 9 is bent inwardly so as to define an inwardly and downwardly-directed staple engaging part 10.
  • the illustrated staple engaging part 10 is substantially planar and extends from the lowermost edge of the connecting web 9 so as to extend generally downwardly, away from the upper member 6 and towards the lower member 5 such that the free end of the staple engaging part 10, illustrated generally at 11, points generally towards the connection between the base member 5 and the upper member 6 defined by the connecting web 7. It should therefore be appreciated that the staple- engaging part 10 is arranged so as to make an acute angle relative to the base member [0025]
  • Figure 3 illustrates the profile of the staple-engaging part 10 in more detail, viewed in plan form.
  • the staple-engaging part 10 comprises three substantially identical elongate staple-engaging members 12, each of which takes the form of a substantially elongate finger.
  • the three staple-engaging fingers 12 are provided in generally side-by-side relation and are each tapered to a rounded point 13 formed at their free ends.
  • Each finger 12 has a maximum width p which occurs at a point spaced a distance a from the edge of the staple-engaging part 10 connected to the connecting web 9.
  • the maximum width p of each finger 12 is slightly larger than the crown width W of the average staple with which the staple remover is intended to be used.
  • a distance x which defines a substantially widest possible gap between opposing or facing surfaces of the staple-engaging members 12, is preferably less than the distance p to prevent the occurrence of a staple crown 2 becoming wedged between two adjacent staple-engaging members 12.
  • each staple-engaging finger 12 is also arranged to make an acute angle to the base member.
  • the fingers 12 at their free ends are spaced a distance g above the base member 5 in the relaxed condition of the staple remover illustrated in Figure 2.
  • each finger 12 can be considered to be provided in spaced-apart relation relative to the base member 5 so as to define a gap for the receipt of a stack of stapled sheets between the fingers 12 and the base member 5, the narrowest part of that gap being defined by the distance g between the free ends 13 of the fingers 12 and the base member 5.
  • the staple-engaging part 10 comprising the fingers 12 can be deflected resiliently relative to the upper member 6 and is actually resiliently biased away from the upper member 6 so as to adopt the relaxed position illustrated in Figure 2.
  • the base member 5 and the upper member 6 are resiliently biased away from one another with the result that the fingers 12 carried by the staple-engaging part 10 are effectively resiliently biased away from the base member 5 so as to adopt a relaxed condition in which the free ends 13 define the gap distance g to the base member 5.
  • FIG 4 the staple-remover 4 is illustrated positioned over the corner of a stack of papers 14 which are stapled together by a staple 1, only the crown part of which is visible in Figure 4.
  • the stapled corner of the stack 14 has been inserted between the fingers 12 and the base member 5 so as to be received within the gap defined therebetween.
  • the base member 5 thus becomes positioned against the lowermost sheet in the stack 14.
  • the staple 1 is located between the free ends 13 of the fingers 12 and the connecting web 7, the staple remover having been positioned over the stapled corner of the stack such that the staple 1 has passed completely through the gap defined between the fingers 12 and the base member 5.
  • the fingers 12 thus point generally towards the staple 1.
  • the stack of papers 14 has a thickness in excess of the minimum gap spacing g, then the resilience of the staple-remover allows the stack to be pushed through the gap g such that the fingers 12 become deflected slightly towards the upper member 6, against their inherent resilient bias, hi the event that the stack 143 has a thickness less than the gap spacing g, then the stack of papers can simply be relatively freely inserted between the fingers 12 and the base member 5.
  • the staple-remover 4 can then be moved relative to the stack of papers 14 generally in the plane of the stack 14 and across the staple 1 as indicated generally by arrow R in Figure 4.
  • the staple remover 4 it may be necessary, for example where the stack of papers 14 has a thickness less than the gaps facing g, for a user of the staple-remover to press the base member 5 and the upper member 6 towards one another, against their resilient bias, in order to ensure that at least the free ends 13 of the fingers 12 are brought to bear against the top sheet in the stack 14.
  • the stack 14 is of a thickness greater than the minimum gap spacing g, then the user will not need to press together the base and upper members in this manner.
  • the provision of a plurality of staple-engaging members in the form of fingers 12 is particularly advantageous because, with the fingers 12 arranged in side- by-side relation as described above, a person using the staple-remover does not have to accurately align any of the fingers 12 with the staple 1 to be removed prior to movement of the staple remover in the direction R.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

La présente invention concerne un dégrafeur utilisé pour retirer une agrafe de bureau repliée d'un ensemble agrafé de feuilles de papier ou similaire. Le dégrafeur comprend un élément de base et plusieurs éléments d'engagement d'agrafe sensiblement allongés qui présentent chacun une extrémité libre. Ces éléments d'engagement d'agrafe sont placés de manière à être amenés contre une feuille supérieure d'une pile de feuilles lorsque la pile est reçue entre l'élément de base et les éléments d'engagement d'agrafe. Les éléments d'engagement d'agrafe sont conçus de manière que l'extrémité libre d'au moins un des éléments d'engagement d'agrafe passe entre la couronne d'une agrafe située dans la pile de feuilles et la feuille supérieure, lorsque le dégrafeur est déplacé sur l'agrafe.
PCT/IB2007/004594 2007-11-09 2007-11-09 Dégrafeur WO2009060257A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/004594 WO2009060257A2 (fr) 2007-11-09 2007-11-09 Dégrafeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/004594 WO2009060257A2 (fr) 2007-11-09 2007-11-09 Dégrafeur

Publications (2)

Publication Number Publication Date
WO2009060257A2 true WO2009060257A2 (fr) 2009-05-14
WO2009060257A3 WO2009060257A3 (fr) 2009-07-23

Family

ID=39865715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/004594 WO2009060257A2 (fr) 2007-11-09 2007-11-09 Dégrafeur

Country Status (1)

Country Link
WO (1) WO2009060257A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9943556B2 (en) 2008-03-14 2018-04-17 Nestec S.A. Synbiotic mixture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598367A (en) * 1968-11-08 1971-08-10 Esco Metall Martin Huhnken Staple opener
EP0279472A1 (fr) * 1987-01-16 1988-08-24 Océ-Nederland B.V. Dispositif pour extraire une agrafe de feuilles agrafées

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598367A (en) * 1968-11-08 1971-08-10 Esco Metall Martin Huhnken Staple opener
EP0279472A1 (fr) * 1987-01-16 1988-08-24 Océ-Nederland B.V. Dispositif pour extraire une agrafe de feuilles agrafées

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9943556B2 (en) 2008-03-14 2018-04-17 Nestec S.A. Synbiotic mixture

Also Published As

Publication number Publication date
WO2009060257A3 (fr) 2009-07-23

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