EP1462273A1 - Taille-crayon pour crayon de charpentier - Google Patents

Taille-crayon pour crayon de charpentier Download PDF

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Publication number
EP1462273A1
EP1462273A1 EP03290753A EP03290753A EP1462273A1 EP 1462273 A1 EP1462273 A1 EP 1462273A1 EP 03290753 A EP03290753 A EP 03290753A EP 03290753 A EP03290753 A EP 03290753A EP 1462273 A1 EP1462273 A1 EP 1462273A1
Authority
EP
European Patent Office
Prior art keywords
pencil
cavity
operable
slot
housing
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.)
Withdrawn
Application number
EP03290753A
Other languages
German (de)
English (en)
Inventor
Jianping Hangzhou Great Star Tools Co.Ltd Qiu
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.)
Royal International Corp
Original Assignee
Royal International Corp
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 Royal International Corp filed Critical Royal International Corp
Priority to EP03290753A priority Critical patent/EP1462273A1/fr
Publication of EP1462273A1 publication Critical patent/EP1462273A1/fr
Withdrawn legal-status Critical Current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
    • B43L23/00—Sharpeners for pencils or leads
    • B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
    • 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
    • B43L23/00—Sharpeners for pencils or leads

Definitions

  • the present invention relates to a hand-operable and portable pencil sharpener for use by tradespeople such as carpenters for sharpening a carpenter's pencil.
  • a still further major disadvantage of the sharpeners is that they do not sharpen the extremity of the lead to a fine point, as the lead is of rectangular cross-section. When the pencil is rotated, shavings of the wood about the pointed end and both side edge portions of the lead only are cut. This leaves the extremity of the lead blunt and in most cases the pencil cannot inscribe fine lines, which is important when inscribing certain marks on material pieces to be cut or machined.
  • It is a feature of the present invention is provide a hand-operable and portable pencil sharpener which substantially overcomes the above-mentioned disadvantages of the prior art.
  • the present invention provides a hand-operable and portable pencil sharpener which comprises a housing having a conical cavity therein.
  • the cavity is of circular cross-section and defines an open inlet end tapering to a narrow inner end.
  • a collar is provided about the open inlet end and formed integral with the housing, and defines a circular cavity concentric with the open inlet end.
  • a pencil centering insert is provided in close rotational fit within the circular cavity and rotatable therein.
  • the pencil centering insert has a pencil centering slot.
  • Removable attachment means is provided for retaining the pencil centering insert in the circular cavity.
  • a longitudinal through slot is provided along a side wall of the conical cavity.
  • a flat straight blade having a sharp longitudinal edge is secured adjacent to the longitudinal through slot, with the sharp longitudinal edge projecting into the cavity whereby to shave a portion of the extremity of a pencil rotated in the conical cavity and centered by the centering slot of the pencil centering insert.
  • a pencil lead abrading element secured to the housing to abrade a fine point on the free end of a lead of a pencil.
  • FIGURE 1 is a perspective view of the hand-operable and portable pencil sharpener of the present invention
  • FIGURE 2 is a side view, partly in section, of the housing of the pencil sharpener
  • FIGURE 3 is a section view along section lines A-A of Figure 2;
  • FIGURE 4 is a section view similar to Figure 3, but including the assembly of the pencil centering insert and the flexible plastic clip;
  • FIGURE 5 is a side view similar to Figure 2 but showing the abrading material piece secured in the cavity formed in the side wall of the housing to abrade a fine point on the free end of a lead of a carpenter's pencil;
  • FIGURE 6A is an end view of the pencil centering insert showing the configuration of the transverse slots
  • FIGURE 6B is a section view along section lines B-B of Figure 6A.
  • FIGURE 7 is a side view of the flexible plastic clip showing the configuration thereof.
  • the hand-operable and portable pencil sharpener of the present invention comprises a housing 11 having a conical cavity 12 therein, as better illustrated in Figures 3 and 4.
  • the conical cavity is of circular cross-section and defines an open inlet end 13, tapering to a narrow inner end 14.
  • a collar 15 is formed integral with the housing and defines a circular cavity which is concentric with the open inlet end 13.
  • the housing as shown in Figure 3, is molded from a suitable plastics material.
  • a pencil centering insert which is also molded of plastic material. It is formed as a ring having a pencil centering slot 18, which extends through the annular insert 17, as shown in Figure 6B.
  • the insert has a circular outer surface 19 containing a circumferential channel 20.
  • the pencil centering insert 17 is received in close rotational fit within the circular cavity 16 of the collar 15 and retained therein by a removable attachment means in the form of a flexible plastic clip 21, as illustrated in Figure 7.
  • the collar 15 is provided with a clip-receiving channel 22, which is formed in the outer surface 23 of the collar.
  • the channel has at least two spaced-apart through holes 24 (see Figure 4) for receiving a respective one of a pair of teeth 25 projecting from the inner surface 26 of the clip 21.
  • the clip is a U-shaped clip formed by a cut-out portion of a plastic ring.
  • the clip also has a locating projection 27 which protrudes into a locating through hole 28 (see Figure 3) for centering the clip 21.
  • the insert In order to secure the pencil centering insert 17 in the collar 15, the insert is positioned within the collar and the flexible plastic clip 21 is pressed over the clip-receiving channel 22 with the locating projection 27 disposed within the locating through hole 28 and the teeth 25 enter into their respective through holes 24. Accordingly, the insert is removably secured within the circular cavity 16 and freely rotatable therein. To remove the insert, it is merely necessary to remove the flexible plastic clip.
  • a longitudinal through slot 30 is formed along a side wall of the conical cavity 12.
  • a flat straight sharpening blade 32 having a sharp longitudinal edge 33, is secured adjacent to the longitudinal through slot 30 on a fastening wall 34 by means of fasteners 35.
  • the sharp longitudinal edge 33 of the blade projects slightly into the cavity 30 whereby to shave a portion of the wood and lead on the extremity of a pencil 36, which is placed in the pencil centering slot 18 and pushed to abut the side wall of the cavity adjacent to the blade cutting edge and rotated with respect to the housing 11.
  • the pencil is held in one hand and the housing or the pencil is rotated one with respect to the other.
  • an outer end surface 27 of the pencil 36 is cut or shaved to sharpen the end edges of the lead 39.
  • the sharpener leaves a blunt end 38 at the end of the pencil lead 39.
  • a pencil lead abrading element 40 secured to the housing and having an exposed abrading surface 41 for abrading a fine point on or along the free end or blunt end 38 of the lead 39. Therefore, the blunt end 38 can be sharpened to have a sharp point.
  • the abrading element 40 is an abrading stone piece of rectangular cross-section which is secured within a cavity 42 formed in the housing 11.
  • the stone piece 40 is secured within the cavity by glue 43.
  • finger locating depressions 44 are formed in an outer surface of the collar 15 and disposed on opposed sides thereof for comfort in clamping the housing between the fingers of a user person.
  • the pencil centering slot 18 is of substantially rectangular cross-section and, as herein shown, there are two slots positioned transverse with one another, with the first slot 18' being longer than the second slot 18'', whereby to provide close fit for carpenter's pencils of different widths.
  • the ends of the slot have an octagonal shape to fit the contour of the pencils, which are usually octagonal in cross-section.
  • a hole 50 is provided in a flat wall 49 of the housing for attaching the pencil sharpener to a cord or chain.

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  • Drawing Aids And Blackboards (AREA)
EP03290753A 2003-03-25 2003-03-25 Taille-crayon pour crayon de charpentier Withdrawn EP1462273A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03290753A EP1462273A1 (fr) 2003-03-25 2003-03-25 Taille-crayon pour crayon de charpentier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03290753A EP1462273A1 (fr) 2003-03-25 2003-03-25 Taille-crayon pour crayon de charpentier

Publications (1)

Publication Number Publication Date
EP1462273A1 true EP1462273A1 (fr) 2004-09-29

Family

ID=32799144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290753A Withdrawn EP1462273A1 (fr) 2003-03-25 2003-03-25 Taille-crayon pour crayon de charpentier

Country Status (1)

Country Link
EP (1) EP1462273A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354509A (zh) * 2014-11-13 2015-02-18 常熟市磊燕办公用品有限公司 一种多功能卷笔刀

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081010A (en) * 1975-02-19 1978-03-28 Fabrica Italiana Lapis Ed Affini (Fila) Spa Pencil sharpener for non-circular section pencils
WO2000053431A2 (fr) * 1999-03-11 2000-09-14 Penshar, Llc Taille-crayon

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081010A (en) * 1975-02-19 1978-03-28 Fabrica Italiana Lapis Ed Affini (Fila) Spa Pencil sharpener for non-circular section pencils
WO2000053431A2 (fr) * 1999-03-11 2000-09-14 Penshar, Llc Taille-crayon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354509A (zh) * 2014-11-13 2015-02-18 常熟市磊燕办公用品有限公司 一种多功能卷笔刀

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