US3837748A - Pen - Google Patents

Pen Download PDF

Info

Publication number
US3837748A
US3837748A US00321711A US32171173A US3837748A US 3837748 A US3837748 A US 3837748A US 00321711 A US00321711 A US 00321711A US 32171173 A US32171173 A US 32171173A US 3837748 A US3837748 A US 3837748A
Authority
US
United States
Prior art keywords
instrument
writing
carrier
carriers
operative
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
US00321711A
Other languages
English (en)
Inventor
M Wada
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 US3837748A publication Critical patent/US3837748A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/12—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operating by means sliding in longitudinally-slotted casings

Definitions

  • the instrument comprises individual writing tips secured in individual movable [52] U.S. Cl. 401/30, 401/32 carriers, At least one of the carriers forms a portion of [5]] Int. Cl B43k 27/14 the instrument outer surface in the area in which the [58] Field of Search 401/30, 32 instrument is grasped while writing and is slidably mounted thereon to permit movement of the particu- References Clied lar tip secured therein to project it from the instru- UNITED STATES PATENTS merit body by sliding the carrier along the instrument 586,254 7/1897 Van Voorhis 401/30 x body outer i
  • Another carrier is "Q 2,541,685 2/1951 Boder 401 33 Posed to the slldably movable one and 18 coupled thereto by gear means for reciprocating movement.
  • FOREIGN PATENTS APPLICATIONS Means are also provided for securing all the writing 578,401 6/1946 Great Br1ta1n 401/30 in a retracted position the instrument 634,823 3/l950 Great Britain 401/32 7 Claims, 7 Drawing Figures PEN BACKGROUND OF THE INVENTION 1.
  • the invention relates to a writing instrument having a plurality of writing tips which are easily and quickly projected and retracted from the instrument body.
  • the instrument may be a pen, ball-point or cartridge type fountain, or a propelling pencil, or a combination thereof. More specifically, the invention concerns a pen having a plurality of writing tips of different colors which may be individually projected from the pen body for writing.
  • the present invention overcomes these disadvantages and provides an instrument in which the projection and retraction of writing tips is accomplished quickly and easily without requiring the writer to change his writing grasp on the instrument body.
  • the instrument comprises an instrument body in which are housed a plurality of writing tips secured in individual carriers.
  • the carriers are mounted in opposed positions for reciprocating movement in opposite directions.
  • At least one of the carriers is slidably mounted on, and forms part of, the outer surface of the instrument body.
  • This slidably mounted carrier extends into the surface area of the instrument which is grasped while writing and slidably moves along the instrument body.
  • Means are also provided for retracting and maintaining all writing tips in a retracted position.
  • FIG. 1 is a longitudinal section of a pen according to the invention
  • FIG. 2 is a longitudinal section of the pen illustrated in FIG. 1, as viewed at a right angle thereto, the lower portion being cut away;
  • FIG. 3 is a side view of the lower forward position of the pen body, particularly showing the sliding carrier on the surface of the pen body;
  • FIG. 4 is a longitudinal section of the main part of the upper rear of the pen body, showing the writing tips housed therein;
  • FIG. 5 (A) is a cross section of the pen taken along the lineA--A' in FIG. 1;
  • FIG. 5 (B) is a cross section of the pen taken along the line 8-H.
  • FIG. 5 (C) is a cross section of the pen taken along the line CC'.
  • upper portion 2 of pen body H With upper portion 2 of pen body H are provided carriers 5 and 6 carrying writing tips 5? and 6P which may be pen tips, cartridge fountain or ball-point, or pencil tips, or a combination thereof.
  • the carriers are mounted opposed to each other for reciprocating movement in opposite directions.
  • the carriers 5 and 6 are associated with racks 5t and 6t, respectively, meshing with a common geared pinion 8 whose central shaft 7 is held in supporter 9 secured with the upper portion 2 parallel to the sides of the carriers 5 and 6.
  • Lower portion 1 of pen body H has a longitudinally indented portion 4 extending over the surface of less than half the circumference of pen body H to receive slide portion 3 of carrier 5 secured by fixing projection 30 of slide portion 3 in groove 5c of carrier 5.
  • indented portion 4 In indented portion 4 are provided longitudinal notches 4a and 4b at respective edges thereof to accept corresponding projections 3a and 3b of slide portion 3. Normally, the projections 3a and 3b are formed by bending the edges of slide portion 3 which is made up of a thin plate having the same curvature as the surface of pen body H. Slide portion 3 is thereby slidably secured in indented portion 4 of pen body H. Preferably, the bottom of indented portion 4 is provided with additional grooves or slits 40, as illustrated in FIG. 5 (C) to ensure smooth sliding of slide portion 3 thereon.
  • the outer surface of slide portion 3 may be provided with indentations to facilitate holding the pen or sliding slide portion 3. Additionally, the sliding portion 3 may be further shaped for esthetic or functional purposes.
  • Carriers 5 and 6 are provided with bores or spaces 5h and 6h, respectively, for receiving writing tips 5p and 6p, which may be writing tips of different color. As described hereinabove, writing tips encompass ball point pen tips and cartridge type fountain pen tips as well as propelling pencil tips.
  • a rotor 10 rigidly connected with a socket clip 11.
  • the rotor 10 has an eccentric projection 12 extending downwards, which functions as a stop, hereinafter referred to as a stop 12, against carrier 5.
  • Stop 12 has a resilient hook plate 13 secured along the inner side thereof.
  • writing tips 5 and 6 are locked retracted within the pen body H.
  • the pen Prior to projecting the desired writing tip, the pen is unlocked by rotating pocket clip 11 which rotates rotor 10 so as to displace stop 12 from engagement against projection 5a and hook 13 from recess 5b of carrier 5. This locates stop 12 to the rear of pinion central shaft 7.
  • a writer normally holds the pen body H with his thumb and index finger. To retract the writing tip in use and project another, the writer, either with his thumb or his index finger, merely slides the sliding portion 3 in one direction. To use the other writing tip, he merely slides it in the opposite direction.
  • the writer can replace different writing tips simply by moving the sliding portion 3 in opposite directions with the thumb or index finger without changing his grasp on the instrument.
  • the particular writing tip in use is maintained projected by the writers grasp around slide 3 and pen body H which prevents movement of slide 3 with respect to pen body H.
  • Sliding portion 3 is displaced by a distance of 8 to 10mm as indicated by DD' in FIG. 3.
  • the writing tips 5;) and 6p are again retracted and the pen locked. This is accomplished by rotating pocket clip 11 to return it to its locking position as described hereinabove. Slide 3 is then moved upwards until projection 5a of carrier 5 contacts the lower portion of hook plate 13.
  • a writing instrument having a plurality of writing tips capable of being individually projected from the instrument which comprises a. an instrument body having a generally tubular shape;
  • locking means for maintaining all of said writing tips retracted within said body in a locked position, said locking means comprising means operative to be rotated within said body and having first means operative to prevent movement of said at least one carrier in a first direction and second means operative to prevent movement of said at least one carrier in an opposite direction.
  • said at least one carrier extends radially over less than half of the circumference of said body and comprises longitudinal projections at longitudinal ends thereof, and said body comprises longitudinal notches operative to be engaged by said longitudinal projections to thereby slidably secure said carrier to said body.
  • said pen further comprises means for moving said carriers in opposed reciprocating directions, said means comprising racks associated with said carriers and a common pinion operative to engage said racks.
  • said means operative to be rotated comprises a cap rotatably mounted at the top of said body, and wherein said first means comprises an eccentric projection on said cap and said second means comprises a resilient plate having a hook at one end thereof flexibly secured to said cap.
  • said at least one carrier comprises a projection at one end thereof operative to engage said eccentric projection of said cap and a recess operative to be engaged by said hook on said resilient plate.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US00321711A 1972-03-21 1973-01-08 Pen Expired - Lifetime US3837748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2840072A JPS553160B2 (en, 2012) 1972-03-21 1972-03-21

Publications (1)

Publication Number Publication Date
US3837748A true US3837748A (en) 1974-09-24

Family

ID=12247601

Family Applications (1)

Application Number Title Priority Date Filing Date
US00321711A Expired - Lifetime US3837748A (en) 1972-03-21 1973-01-08 Pen

Country Status (3)

Country Link
US (1) US3837748A (en, 2012)
JP (1) JPS553160B2 (en, 2012)
DE (1) DE2309543A1 (en, 2012)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221491A (en) * 1979-03-26 1980-09-09 Walgan Corp. Pen construction
US5365332A (en) * 1993-02-18 1994-11-15 J. Bar Enterprises Firearm inspection device
EP0968843A1 (en) * 1998-06-29 2000-01-05 Soo Choi Man Length-variable type pencil
USD451545S1 (en) 2000-11-10 2001-12-04 Mitsubishi Pencil Co., Ltd. Ball-point pen
USD453790S1 (en) 2000-11-10 2002-02-19 Mitsubishi Pencil Co., Ltd. Ball-point pen with a mechanical pencil
US20100166487A1 (en) * 2008-12-26 2010-07-01 Yu-Yin Liu Pen with double pen barrel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6354913U (en, 2012) * 1986-09-22 1988-04-13
JP4773585B1 (ja) * 2011-02-28 2011-09-14 公二 宇野 筆記具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586254A (en) * 1897-07-13 Duplex penholder
GB578401A (en) * 1944-04-07 1946-06-26 Ernst Jacob Improvements in or relating to fountain pens
GB634823A (en) * 1946-11-04 1950-03-29 Fagard A J & Cie Improvements in writing instruments
US2541685A (en) * 1946-12-10 1951-02-13 Boder Robert Fountain pen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031051A (en, 2012) * 1973-07-26 1975-03-27

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586254A (en) * 1897-07-13 Duplex penholder
GB578401A (en) * 1944-04-07 1946-06-26 Ernst Jacob Improvements in or relating to fountain pens
GB634823A (en) * 1946-11-04 1950-03-29 Fagard A J & Cie Improvements in writing instruments
US2541685A (en) * 1946-12-10 1951-02-13 Boder Robert Fountain pen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221491A (en) * 1979-03-26 1980-09-09 Walgan Corp. Pen construction
WO1980002011A1 (en) * 1979-03-26 1980-10-02 Walgan Corp Pen construction
US5365332A (en) * 1993-02-18 1994-11-15 J. Bar Enterprises Firearm inspection device
EP0968843A1 (en) * 1998-06-29 2000-01-05 Soo Choi Man Length-variable type pencil
USD451545S1 (en) 2000-11-10 2001-12-04 Mitsubishi Pencil Co., Ltd. Ball-point pen
USD453790S1 (en) 2000-11-10 2002-02-19 Mitsubishi Pencil Co., Ltd. Ball-point pen with a mechanical pencil
US20100166487A1 (en) * 2008-12-26 2010-07-01 Yu-Yin Liu Pen with double pen barrel
US7854559B2 (en) * 2008-12-26 2010-12-21 Spark Gold Co. Pen with double pen barrel

Also Published As

Publication number Publication date
DE2309543A1 (de) 1973-09-27
JPS553160B2 (en, 2012) 1980-01-23
JPS4897624A (en, 2012) 1973-12-12

Similar Documents

Publication Publication Date Title
US3837748A (en) Pen
US5184908A (en) Writing implement with side actuator
US3898008A (en) Writing instrument
US2676570A (en) Writing instrument
US3260241A (en) Writing tool
US3164132A (en) Retractable multiple unit writing instrument
US3700340A (en) Multicolor ball-point pen
US2837057A (en) morlock etal
GB1007198A (en) Shift mechanism for writing instruments, such as ball-point pens
US2833251A (en) Writing instrument
JPH03151296A (ja) 押出し式複合筆記具
JP7444510B1 (ja) 複式筆記具
GB1233700A (en, 2012)
US2656978A (en) Improvement in or relating to slide rule
JP4601484B2 (ja) ノック式筆記具
US3910705A (en) Multicolor writing instrument
JPH065197Y2 (ja) 複合筆記具
JP7474639B2 (ja) ノック式筆記具
GB1052922A (en, 2012)
JPS6217264Y2 (en, 2012)
JPH037192Y2 (en, 2012)
JP2023138205A (ja) 色表示切替式グリップ付き筆記具
GB1192116A (en) Writing Instrument
JP2002178688A (ja) 複式筆記具
JP2024046404A (ja) 切替インジケータ表示機能付き筆記具