US3574956A - Writing support - Google Patents

Writing support Download PDF

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Publication number
US3574956A
US3574956A US777552A US3574956DA US3574956A US 3574956 A US3574956 A US 3574956A US 777552 A US777552 A US 777552A US 3574956D A US3574956D A US 3574956DA US 3574956 A US3574956 A US 3574956A
Authority
US
United States
Prior art keywords
support
sheet
writing
diameter
transparent
Prior art date
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
US777552A
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English (en)
Inventor
Robert Hamelin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3574956A publication Critical patent/US3574956A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members

Definitions

  • An erasable writing pad is formed from a transparent or translucent plastic sheet, e.g. of
  • polyvinylchloride whose front surface is embossed with rows of hemispherical bulges of about 0.1 mm diameter and a mutual separation equal to or less than that diameter, the rear surface of the sheet carrying a grating overlain by a distinctive color layer.
  • Robert HAMELIN INVEN'IOR KM 6R0 Attorney WRITING SUPPORT My present invention relates to an improved support on which one can write by using an instrument such as pencil, chalk, crayon or the like depositing solid particles on the surface thereof.
  • Conventional supports of this type consist essentially of a plate of natural slate or black cardboard.
  • the support according to this invention comprises a transparent or translucent sheet of plastic material whose front side, to be engaged by the writing instrument, has a grained surface.
  • this writing support or pad may comprise a stack of several sheets including a rear sheet acting as a backing layer, an intermediate stiffening sheet, and a plastic front sheetas described above constituting the writing surface, these various sheets being assembled by high frequency welding along their marginal portions.
  • FIG. 1 illustrates a writing support according to this invention
  • FIG. 2 is a considerably magnified view of the grained plastic sheet. 7
  • a writing support designed to replace conventional slates consists of a transparent or translucent plastic sheet A grained by calendering and having printed on its backside on the one hand a guiding cross-ruling pattern B and on the other hand a background-forming layer C.
  • the distance e between adjacent rows of grains shall not exceed the value of the grain diameter d.
  • the improved writing support embodying this invention may be made from heat-weldable material, notably highfrequency-fusible synthetic resin such as PVC. It is also recommended to reinforce this supporting sheet with other layers or sheets to form the aforedescribed stack.
  • This support may be folded along a median line XX so that the writing surface is protected during transportation.
  • the backside of the sheet A may be grained to register with the front side graining. However, it is preferred to leave this backside plain or smooth, in order to facilitate the printing of the cross ruling B and background C.
  • a support on which one can write by using an instrument of the type depositing solid particles when rubbed thereagainst, such as pencil, chalk, crayon, comprising a transparent or translucent plastic sheet having a front side, which is to be engaged by the instrument, substantially covered by rows of bulged hemispherical grains of a diameter of about 0.l mm, said sheet having its backside printed or coated with a color layer acting as a background after guiding cross-ruling has been printed thereon.

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
US777552A 1967-11-17 1968-11-18 Writing support Expired - Lifetime US3574956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR128640 1967-11-17

Publications (1)

Publication Number Publication Date
US3574956A true US3574956A (en) 1971-04-13

Family

ID=8641856

Family Applications (1)

Application Number Title Priority Date Filing Date
US777552A Expired - Lifetime US3574956A (en) 1967-11-17 1968-11-18 Writing support

Country Status (7)

Country Link
US (1) US3574956A (fr)
BE (1) BE723989A (fr)
CH (1) CH477994A (fr)
DE (2) DE6807153U (fr)
FR (1) FR1568808A (fr)
GB (1) GB1223035A (fr)
NL (1) NL6816179A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000005081A1 (fr) * 1998-07-21 2000-02-03 Genaro Aldrete Frances Tableau sur lequel on peut ecrire presentant des lignes de reference invisibles a distance et son procede de fabrication
US20040155454A1 (en) * 2003-02-07 2004-08-12 Tims J. Michael Embossed paper
US20090061394A1 (en) * 2007-08-30 2009-03-05 Meadwestvaco Corporation Coloring sheet
FR2931387A1 (fr) * 2008-05-26 2009-11-27 Maped Ardoise de type scolaire en matiere synthetique
US7717713B2 (en) 2003-02-07 2010-05-18 Meadwestvaco Corporation Writing guide system
US20100310816A1 (en) * 2007-10-01 2010-12-09 Genaro Aldrete-Frances Device for making annotations on a backing
WO2012066505A1 (fr) * 2010-11-19 2012-05-24 Sha Altiel Albert Tableau d'écriture
USD734394S1 (en) * 2012-06-01 2015-07-14 Quorum Group, LLC Communication board
US9224316B2 (en) 2012-06-08 2015-12-29 Quorum Group, LLC Wall plaque with decorative graphic and methods of making the same
USD755893S1 (en) * 2015-03-19 2016-05-10 Darren B. Howell Display board
CN108274927A (zh) * 2018-03-15 2018-07-13 成都松齐明科技有限公司 板书块
USD845386S1 (en) * 2017-06-15 2019-04-09 Ghost Pepper Goods Sheet of paper

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117653A (en) * 1982-04-07 1983-10-19 Buckle Margaret Lorna Cards for games of skill or chance
US5079851A (en) * 1989-07-28 1992-01-14 Sill Kenneth A Notation area insert for a tape measure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524805A (en) * 1894-08-21 Johann kostner
US1043988A (en) * 1912-02-24 1912-11-12 Williams Brown And Earle Inc Screen for optical projection purposes and method of making same.
US2360212A (en) * 1942-01-01 1944-10-10 Dudley Eric Gordon Illuminated display device for educational purposes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524805A (en) * 1894-08-21 Johann kostner
US1043988A (en) * 1912-02-24 1912-11-12 Williams Brown And Earle Inc Screen for optical projection purposes and method of making same.
US2360212A (en) * 1942-01-01 1944-10-10 Dudley Eric Gordon Illuminated display device for educational purposes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358835A (en) * 1998-07-21 2001-08-08 Aldrete Frances Genaro Writing board with reference lines which are invisible from a distance and fabrication process
GB2358835B (en) * 1998-07-21 2002-12-04 Genaro Aldrete-Frances Writing board with reference lines which are invisible from a distance and fabrication process
US6506058B1 (en) 1998-07-21 2003-01-14 Genaro Aldrete Frances Writing board with reference lines which are invisible from a distance and fabrication process
WO2000005081A1 (fr) * 1998-07-21 2000-02-03 Genaro Aldrete Frances Tableau sur lequel on peut ecrire presentant des lignes de reference invisibles a distance et son procede de fabrication
US20040155454A1 (en) * 2003-02-07 2004-08-12 Tims J. Michael Embossed paper
US7118135B2 (en) * 2003-02-07 2006-10-10 Meadwestvaco Corporation Embossed paper
US20060273575A1 (en) * 2003-02-07 2006-12-07 Tims J M Embossed paper
US7717713B2 (en) 2003-02-07 2010-05-18 Meadwestvaco Corporation Writing guide system
US7717469B2 (en) 2003-02-07 2010-05-18 Meadwestvaco Corporation Embossed paper
US8915739B2 (en) * 2007-08-30 2014-12-23 ACCO Brands Corporation Coloring sheet
US20090061394A1 (en) * 2007-08-30 2009-03-05 Meadwestvaco Corporation Coloring sheet
US20100310816A1 (en) * 2007-10-01 2010-12-09 Genaro Aldrete-Frances Device for making annotations on a backing
FR2931387A1 (fr) * 2008-05-26 2009-11-27 Maped Ardoise de type scolaire en matiere synthetique
WO2012066505A1 (fr) * 2010-11-19 2012-05-24 Sha Altiel Albert Tableau d'écriture
USD734394S1 (en) * 2012-06-01 2015-07-14 Quorum Group, LLC Communication board
US9224316B2 (en) 2012-06-08 2015-12-29 Quorum Group, LLC Wall plaque with decorative graphic and methods of making the same
USD755893S1 (en) * 2015-03-19 2016-05-10 Darren B. Howell Display board
USD845386S1 (en) * 2017-06-15 2019-04-09 Ghost Pepper Goods Sheet of paper
CN108274927A (zh) * 2018-03-15 2018-07-13 成都松齐明科技有限公司 板书块

Also Published As

Publication number Publication date
CH477994A (fr) 1969-09-15
DE6807153U (de) 1969-03-06
GB1223035A (en) 1971-02-17
NL6816179A (fr) 1969-05-20
FR1568808A (fr) 1969-05-30
BE723989A (fr) 1969-05-02
DE1809161A1 (de) 1969-07-17

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