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WO1992019127A2 - Repose-poignets pour un utilisateur d'ordinateur - Google Patents

Repose-poignets pour un utilisateur d'ordinateur Download PDF

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Publication number
WO1992019127A2
WO1992019127A2 PCT/US1992/002772 US9202772W WO9219127A2 WO 1992019127 A2 WO1992019127 A2 WO 1992019127A2 US 9202772 W US9202772 W US 9202772W WO 9219127 A2 WO9219127 A2 WO 9219127A2
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
riser
foam
base pad
rehef
Prior art date
Application number
PCT/US1992/002772
Other languages
English (en)
Other versions
WO1992019127A3 (fr
Inventor
Louis Anthony Morrone
James Martin Garcia
Robert Samuel Smith
Original Assignee
Louis Anthony Morrone
James Martin Garcia
Robert Samuel Smith
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
Priority claimed from US07/698,495 external-priority patent/US5131614A/en
Application filed by Louis Anthony Morrone, James Martin Garcia, Robert Samuel Smith filed Critical Louis Anthony Morrone
Publication of WO1992019127A2 publication Critical patent/WO1992019127A2/fr
Publication of WO1992019127A3 publication Critical patent/WO1992019127A3/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/039—Accessories therefor, e.g. mouse pads
    • G06F3/0395—Mouse pads
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/03—Tables or desks for office equipment, e.g. typewriters, keyboards with substantially horizontally extensible or adjustable parts other than drawers, e.g. leaves
    • A47B21/0371—Platforms for supporting wrists

Definitions

  • This invention relates to wrist rests and particularly to a wrist rest support for use with devices including the key board of a computer and a computer "mouse" during the use of which the user is exposed to repetitive motion stess.
  • U. S. Patent 4,621,781 to Springer is for an adjustable metal base that supports both the keyboard and a foamwrist support.
  • the support means i.e., the base plate, preferably includes stop means, e.g., a flange abutting the work surface on which the keyboard rests to prevent sliding movement of the forearm rest.
  • the cushion comprises a self skinning urethane pad which comprises an outer skin 25 and an inner foam material 26 secured to the backing plate.
  • Self skinning urethane pad refers to the property of molded foams to develop a skin of higher density than than the interior of the cast foam during the molding process. The slin develops because the surface region of the foam in the mold cools at a greater rate than the interior of the foam. Such a skin developed as part of foam is not comfortable to the skin of the user since it is a region of stiff hard plastic.
  • U. S. Patent to Scantlebury is for a safety crashpad that includes hardware for attachment of a pad to the dashboard of a vehicle.
  • the pad includes an outer jacket 28 which encloses foam rubber.
  • the pad is not designed for use as a wrist support so that selection of the composition of the pad is not based on a consideration of comfort on repeated contact but is designed to protect against tearing, puncturing, rupturing, etc. -5- Therefore.
  • the pad includes a "resilient body that is preferably closely enveloped in a jacket
  • U. S. Patent 4,938,439 to Fried discloses an automobile accessory "defined by four planar surfaces and one nonplanar surface arranged to form two wedge shaped ends positioned perpendicular to one another and a rigid support member secured to the resilient body member.
  • the accessory serves as an arm rest and when the wide end wedge of the rest is placed between the users leg and car door, the accessory serves as a lap tray.
  • the accessory is not configured to function as a wrist rest support for a computer user.
  • the wrists be maintained in a neutral or unflexed position and that vibration from typing be deadened in order to avoid stresses that lead to repetitive motion disorders such as carpal tunnel syndrome and stiffness of the neck and shoulders.
  • This invention is directed toward a wrist rest support having sections of different thicknesses in which one section is under the keyboard of the computer and the second section extends away from the the key board to where the user may support his wrists while typing.
  • the wrist rest section is specially contoured to support the wrists in a manner that eliminates stresses leading to repetitve motion stress syndrome.
  • a portion of the wrist rest section is detachable providing that a wrist rest may be selected and attached to a base pad that is best suited to the size of the user.
  • the composition of the support is selected to minimize vibrations emanating from the keyboard. Antistatic properties are conferred on the support to prevent destruction of valuable data or programs by inadvertent contact with magnetic recording disks.
  • Fig. 1 shows one embodiment of this invention in perspective using fabric as a base pad.
  • Fig.2 shows in perspective a second embodiment of the invention in which the riser is permanently attached to the base pad.
  • Fig. 3 shows in perspective a third embodiment of the invention in which the riser is detachable from the base pad.
  • Fig. 4 is a partial end view showing the relation of the height of the riser to the tops of the keys on the keyboard.
  • Fig. 5a and 5b are partial end views of a wrist support for a work station with a front extension.
  • Fig. 6 shows a foam lift that is placed between the bottom of the keyboard and the base pad thereby avoiding transmittal of vibrations from key punching up through the fingers.
  • All three embodiments include a resilient base pad having a device support section 12 on which the keyboard or "mouse” is placed, continuous with a wrist support section 14.
  • the entire base pad is placed on a table or desk top. Therefore the need for an additional rigid support which may extend away from the desk top such as described in the prior art is eliminated and greater economy of construction is achieved.
  • the base pad is a sheet of fabric 16 wrapped around a foam slab 18 so as to provide a thick wrist rest section 13 (the section of fabric WTapped around the foam) from which extends the all fabric section 12 on which the keyboard is placed.
  • This design is the least expensive embodiment and is most appealing in locations such as schools where a large number of wrist rests must be purchased and cost is an important consideration.
  • the support includes a base pad 17 that is positioned under the entire bottom area of the keyboard and extends from in front of the keyboard to provide a base on which a riser
  • the greater thickness of wrist rest section 13 can be achieved by a permantent attachment of riser 15 to section 14 of the base pad.
  • Permanent attachment of the riser 15 to the base pad can be accomplished using any one of several techniques such as molding the entire base pad with riser 15 in one place or by gluing a riser to section 14 of the bse pad. Permanent attachment of the riser 15 is desireable when it is intended to avoid such inconveniences as misplacement of the riser.
  • Fig. 3 shows another embodiment in which a riser 15 is nonpermanently attached to section 14 using "hook and eye” patches 19 on the interface between the base pad and riser 15.
  • Hook and eye patches in the context of this specification should be taken to mean opposing surfaces of fabric which detachably adhere to one another by virtue of a "hook” texture comprising one of the surfaces and an "eye' texture comprising the other surface.
  • This well known material is sold under the tradename VELCRO.
  • Fig. 4 shows a cutaway elevated side view illustrating that in all of the embodiments, wrist rest section 13 on which the wrists are supported is higher than the tops 21 of the keyboard 20 supported on device support section 12. This difference in height serves two purposes.
  • the height of the wrist support above the keyboard has been carefully selected as a result of a study by the inventors in consultation with medical specialists in the field which show that supporting the wrists in this position maintains n angle between the wrist and hand while typing which minimizes strain on the wrists thereby preventing repetitive motion strain syndrome.
  • a bevel 23 on the top leading edge of the wrist rest section 13 further minimizes wrist strain.
  • the detachable riser 15 shown in fig. 3 offers several advantages.
  • the base pad 17 is preferably a flexible foam.
  • the foam should have intermediate firmness in order to be most effective in absorbing vibrations from the keyboard.
  • the foam used in the risr may have a hardness which is firm and different than the hardness of the foam of the base pad which is selected to be intermediate firm.
  • the firmness of the base pad is selected to dampen vibrations of the typing operation through the fingers while the firmness of the wrist rest pad is selected for comfort according to the desires of the user.
  • Another feature of the invention incorporated to deaden direct transmission of vibrations from the keyboard through the fingers is the positioning of a lift 27 between the keyboard and pad as shown in fig. 6.
  • the triangular shape of the lift ensures that only the top edge of the lift is in contact with the keyboard and this construction has been found to very strongly dampen vibrations from the keyboard.
  • the two features of the lift together with a base pad extending entirely under the device marks a major improvement over devices of the prior art where the keyboard is in direct contact with a metal base of a tray extension.
  • fabric 16 is laminated to at least the top surface and sides of the foam pad.
  • the fabric i6 is illustrated in fig.2 and 3 by being partially cutaway from the underlying foam base pad 17 and foam riser 15.
  • the fabric can be laminatd to the foam surface using, e.g., any one of a number of sprayed contact cements that are on the market.
  • the fabric 16 serves four purposes. One purpose is that it improves the appearance of the support. Foams are available in only a limited number of solid colors, generally black, cream or grey.
  • the fabric 16 laminated to the foam in this invention can be selected from a wide range of colors and designs to match the surroundings and convert the workplace to a more attractive area.
  • the fabric can be embossed such as wiith a personalized message to add an even more congenial and attractive atmosphere to the workplace whereas foam is not readily decorated.
  • the second purpose of the fabric is to make the wrist support more comfortable to the touch or feel of the skin.
  • a fabric having the feel similar to felt as cover for the foam is the preferred choice for this invention because it has a "cozy" feeling on the bare wrists.
  • the user By covering the foam with a fabric, the user has both the sensation of resilient support from the pad and a felt-like feeling against the skin in contrast to, either a thick felt pad where there would be insufficient resiliency or a pad that is entirely foam which would not feel as comfortable against the skin.
  • the third purpose of the fabric laminated surface is to provide a better wearing surface than can be provided by a number of other types of surfaces such as felt or foam.
  • Foam surfaces can fragment since foam does not inherently have the tensile strength that characterizes the fabric of choice.
  • Felt surfaces tend to form woolen balls on its surface after being rubbed for several working days.
  • the best material for the application of this invention is a knitted fabric having a nap and a composition that is ten percent polyester and
  • the fourth reason for laminating a fabric to the foam base is that the fabric can be readily made permanently antistatic. This is a very valuble embodiment since, otherwise, data and/or programs stored on magnetic memory disks can be erased if the disk is inadvertently laid on a wrist rest that is not antistatic.
  • the fabric covering the pad can be rendered antistatic accordinging to a process developed by the inventors which is an embodiment of this invention.
  • the antistatic solution is an aquaous emulsion of a polymer such as polyvinyl chloride or polyvinyl acetate and a quarternary amine (typically ten parts polymer to one to four parts quarternary amine . ) in sufficient water base to thoroughly saturate the fabric.
  • a polymer such as polyvinyl chloride or polyvinyl acetate and a quarternary amine (typically ten parts polymer to one to four parts quarternary amine . )
  • antistatic sprays that are used in the laundry room on clothes that can be applied to the wrist support and application of these alternative antistatic solutions are an embodiment of this invention.
  • the preferred treatment is the one suggested supra because of its permanent character.
  • foam is covered with vinyls and other plastic sheet coverings for some applications such as for automobile dash boards (see Background) where the selection of the the laminating material is for a different application such as protection against crashes and does not anticipate the uses and requirements of the present invention.
  • Fabric is also used to cover foam to provide seat cushions for furniture.
  • the practice is not to permanently laminate the fabric to the foam.
  • lamination of the fabric to the foam is done in order that the wrist rest be readily deformed and then resume its original shape without tearing or straining the foam or fabric when the furniture is in use.
  • the principles of the invention have been applied to the situation of a user typing on a keyboard, it will be recognised that these same principles apply to supporting the wrist while using related devices such as the "mouse" that is used with personal or laptop computers.
  • the wrist support for a mouse board will be smaller and the area of the base pad is moved has a composition that is more amenable to rolling the ball of the mouse on its surface while the user is supporting his wrist on the wrist support section of the pad.
  • the riser may be the fabric covered construction described above whereas the base pad on which the mouse is rolled may be covered with a vinyl
  • the riser would be attached to the base board using VELCRO as described above.
  • a metal extension 22 out from in front of the keyboard that have a ledge 25.
  • Some of these ledges are broad as shown in fig. 5b and some are narrow as shown in 5a.
  • these extensions have ledges 25 that are intended to provide support for the wrists, workers find the shelves uncomfortable after periods of use because the shelves are hard.
  • An embodiment of this invention is a fabric covered extension contoured to the ledge and having the same structural features as described in the foregoing paragraphs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Position Input By Displaying (AREA)

Abstract

Dispositif destiné à soutenir les poignets d'un opérateur lorsqu'il réalise des tâches à mouvements répétitifs avec ses mains et ses doigts, telles que la frappe sur un clavier d'ordinateur ou la manipulation d'une souris d'ordinateur. Ledit dispositif se compose d'un coussin de base placé partiellement sous le clavier et comprenant une partie s'étendant à partir du clavier dont la face supérieure se situe au-dessus du niveau des touches afin de soutenir les poignets. Ledit coussin se caractérise par une structure antistatique appliquée sur une base en mousse et, dans un autre mode de réalisation, il comporte une section surélevée que l'on peut séparer, si on le désire, d'une section de base afin de la remplacer par une autre section surélevée de dimensions différentes.
PCT/US1992/002772 1991-04-26 1992-03-31 Repose-poignets pour un utilisateur d'ordinateur WO1992019127A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US698,495 1991-04-26
US07/698,495 US5131614A (en) 1990-10-01 1991-04-26 Wrist rest support for a computer user

Publications (2)

Publication Number Publication Date
WO1992019127A2 true WO1992019127A2 (fr) 1992-11-12
WO1992019127A3 WO1992019127A3 (fr) 1993-02-18

Family

ID=24805498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002772 WO1992019127A2 (fr) 1991-04-26 1992-03-31 Repose-poignets pour un utilisateur d'ordinateur

Country Status (1)

Country Link
WO (1) WO1992019127A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636156A1 (de) * 1996-09-06 1998-03-12 Rainer Dipl Phys Kleinschmidt Stützunterlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT1510B (fr) * 1899-06-12 1900-06-11 Fr Hermann Thier
US2772723A (en) * 1954-02-08 1956-12-04 Hickory Springs Mfg Company In Spring unit for platform rocking chair
CA1282451C (fr) * 1986-08-26 1991-04-02 Lawrie Mcintosh Poste de travail escamotable
US4726085A (en) * 1986-11-28 1988-02-23 Antonio Karen E K Support device for infants
US4938439A (en) * 1988-07-21 1990-07-03 Hollis Fried Automobile armrest/tray accessory
US5074511A (en) * 1991-03-05 1991-12-24 Wilson Lonnie L Portable keyboard support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636156A1 (de) * 1996-09-06 1998-03-12 Rainer Dipl Phys Kleinschmidt Stützunterlage

Also Published As

Publication number Publication date
WO1992019127A3 (fr) 1993-02-18

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