US3051132A - Protraction-retraction mechanism for writing instruments - Google Patents

Protraction-retraction mechanism for writing instruments Download PDF

Info

Publication number
US3051132A
US3051132A US841243A US84124359A US3051132A US 3051132 A US3051132 A US 3051132A US 841243 A US841243 A US 841243A US 84124359 A US84124359 A US 84124359A US 3051132 A US3051132 A US 3051132A
Authority
US
United States
Prior art keywords
barrel
point
writing
latch
pushbutton
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
US841243A
Other languages
English (en)
Inventor
Frank Theodore Johmann
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
Priority to US841243A priority Critical patent/US3051132A/en
Priority to GB28847/60A priority patent/GB936676A/en
Priority to NL255762A priority patent/NL120339C/nl
Priority to NL255762D priority patent/NL255762A/nl
Priority to DEJ18696A priority patent/DE1259735B/de
Priority to FR838945A priority patent/FR1267684A/fr
Priority to CH1060560A priority patent/CH365635A/fr
Priority to BE595263A priority patent/BE595263A/fr
Application granted granted Critical
Publication of US3051132A publication Critical patent/US3051132A/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
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B43K24/084—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons with saw-like or analogous cams
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G09F2023/0016—Advertising on or in specific articles, e.g. ashtrays, letter-boxes on pens

Definitions

  • This invention relates to writing instruments.
  • the invention relates to a ballpoint writing instrument and to a retraction-protraction mechanism therefor, which is actuated either by pressing the writing tip portion of the instrument against a rigid surface or by pressing a pushbutton located proximate the rear of the instrument.
  • FIGURE 1 is a longitudinal sectional view of a ballpoint writing instrument of the invention with the ballpoint in a protracted position.
  • FIGURE 2 is a longitudinal sectional view of the writing instrument of FIGURE 1, wherein the point has been forced inwardly relative to the barrel by pressing the point downwardly onto a rigid surface.
  • FIGURE 3 is a longitudinal sectional view of the writing instrument of FIGURE 1 showing the point retained in a retracted position after being lifted free from the writing surface.
  • FIGURE 4 is a longitudinal sectional view of the writing instrument of FIGURE 1, wherein a pushbutton located at the rear end of the barrel has been depressed to initiate the retraction movement.
  • FIGURE 5 is a cross-sectional view taken along the lines 5-5 of FIGURE 1.
  • FIGURE 6 is an enlarged longitudinal view of the latch element shown in FIGURE 1.
  • FIGURE 7 is a schematic diagram illustrating the relative position of a projecting ear of the latch element with regard to the latch receiving means at various stages of operation of the retraction-protraction mechanism.
  • FIGURE 8 is a longitudinal sectional view of another embodiment of my invention in a retracted position.
  • FIGURE 9 is a longitudinal sectional view of the embodiment of FIGURE 8 in an extended position.
  • FIGURE 10 is a fragmentary view in section showing the pushbutton extending from the side of the instrument.
  • the writing instrument has a tubular casing or barrel including the upper barrel section 19 and the lower barrel section 11, which sections are joined together by frictional and threaded engagement respective- 13/ with the tubular plug 12
  • the upper end of the barrel section 10 is formed with a threaded bore for receiving the threaded tubular end plug 13 which holds the top ring clip 14 in place.
  • the lower portion 15 of the barrel section 11, is tapered inwardly terminating in an open writing end and is formed interiorly with an annular lip 16.
  • a longitudinally movable tubular sleeve or hood 17 Carried within the barrel section 11 is a longitudinally movable tubular sleeve or hood 17, having a reduced cross section at its lower portion to thereby provide a shoulder 18 which normally seats against the lip 15.
  • the outer portion of said sleeve 17 may be tapered and normally projects outwardly through the lower open end of the barrel section 11.
  • the outer end of said sleeve 17, may be formed with the annular interior lip 19.
  • a point and cartridge writing unit indicated generally at 20 including a tubular reservoir tube 21, which is otiset inwardly at its lower end to form the shoulder 22 and the short feed tube 23 which carries the writing ball 24 ⁇ .
  • a flange or flattened portion 25 may be formed in the tube 21.
  • a relatively weak compression helical coil spring 26, surrounding a portion of the reservoir tube 21, is retained between washers 27 provided at the lower edge of the flange 25 and the inner end of said sleeve 17. The spring 26 urges the sleeve 17 outwardly relative to the barrel so as to maintain the shoulder 13 normally seated against the lip 16.
  • a relatively strong helical compression spring 28, also surrounding the reservoir tube 21, is disposed between washers 27 located at the underside of the plug 12 and the top of said flange 25.
  • Spring 28 urges the point and cartridge unit 2iloutwardly relative to the barrel, While engagement of the shoulder 22 against the lip 19 of the sleeve 17, limits this outward movement so that the short terminal tube 23 projects through said lip 19;
  • the upper or inner end of the reservoir tube 21 is insertable into the tubular latch element 29 and may be held either by frictional engagement or otherwise fixed thereto.
  • a series of spaced ears 3% extend outwardly from the lower portion of the latch element 29, said cars 30' having tapered top and bottom edges 31.
  • the upper end of said latch element 29 may be formed with small bore or air vent 32 to allow passage of air into the open top of the cartridge as the ink is Withdrawn by use.
  • a latch mechanism is provided within the upper portion of the barrel, which includes an upper latch member 33 and a lower latch member 34. Both latch members are tubular in cross section and may be held in fixed spaced relation ship to each other, either by gluing or frictional engagement within the sleeve 35.
  • the upper end of the sleeve 35 terminates in a stem 36 which normally extends through the upper end of the barrel section 10 and the tubular plug 13, and serves as a pushbutton.
  • a relatively strong compression spring 37 is disposed between a washer 35 engaging the lower end of said tubular sleeve 35 and the top of said plug 12.
  • the top rim of the lower latch member 34 is formed with a series of radially spaced deep slots or recesses 49 which are open at their top. Also formed in said top rim between said deep recesses 40 are pairs of upwardly projecting shallow teeth 41 each having a vertical edge'41 and a tapered edge 41" (see FIG. 7).
  • the lower rim of the upper latch member 33 is also notched to form the downwardly-projecting radially spaced teeth 42, each having the vertical edge 42' and the tapered edge 42". Said downwardly projecting teeth 42 are radially offset from the upwardly projecting teeth 41 and are adapted to cooperate therewith in a manner to be later explained.
  • FIGURE 1 shows the writing instrument in a protracted position, preparatory to retracting the point. It will be noted that the cars 39 of the latch element 29 carried by the'cartridge, are resting on the bottom edge of the deep slots 40 so that the point and cartridge unit is' extended under the action of the spring 28.
  • FIGURE 2 the writing instrument has been pressed downwardly against a'rigid surface 43 so as to force both the'sleeve- 17 and the point and cartridge unit 24) inwardly'relative to the barrel.
  • the latch element 29 As the latch element 29 is moved upwardly by, said cartridge unit 20, the upper tapered edges 31 of its projecting ears 3%, come into contact with the tapered edges 42" of the teeth 42 of the upper latch member 33.
  • the cars then ride along the teeth 42 until stopped upon reaching the vertical edges 42, thereby slightly rotating the latch element 29 (in a clockwise direction when viewed from the top) to the position shown in FIGURE 2.
  • the sleeve 17 returns to its outwardly projecting position under action of its spring 26.
  • the cars 30 are again partially rotated as they slide downwardly along said tapered edges 41 untilstopped by the vertical edges 41.
  • the cartridge and its point are now in a retracted position with the ball 24 concealed within the hood 17.
  • the whole assembly thus assumes to position 6 where it again engages a tapered edge 42" of an upper tooth, slides upwardly to position 7, then drops to position 8 as the point is lifted from engagement with said surface, slides to position 9, and finallydrops tended and the cycle is completed.
  • FIGURE 4 shows the pushbutton'36 depressed to initiate the first stage of a retraction cycle.
  • the sleeve is forced further inwardly into the barrel against the pressure of the spring'37, thereby moving the teeth 42 of the upper latch member 33 into contact with the ears 3% so as to partially rotate said cars 39.
  • the ears 30 will be next engaged by the lower teeth 41 and partially rotated as the spring 37 forces the sleeve 35, alongwith the latch members 33 .and 34 upwardly.
  • FIGS. 8 and 9 Another embodiment of my invention is shown in FIGS. 8 and 9.
  • the sleeve 17 is elongated and extends through the plug 12. Proximate the inner end of said sleeve 17' are formed the ears 30.
  • the cars 30 are adapted for engagement with the teeth and slots or recesses of the upper and lower latch members 33 and 34 respectively.
  • the ink reservoir tube 21 projects 1 through the inner end of the sleeve 17' and the tubular the position shown in FIGURE .3. It will be noted that the sleeve 35 along with the tubular latch members 33 I and 34 are now located slightly further downward within the barrel as abalance is reached between the opposing force of springs 28 and 37.
  • FIGURE .7 The above described sequence of steps is illustrated diagrammatically in FIGURE .7.
  • the latching mechanism has been developed into a single plane and the small circles with the adjacent numerals represent the location of an ear 30 at various stages of the cycle.
  • the car 39 is at position 1, in a deep 'slot 40.
  • the ear is moved upward out of the recess 40 to position 2 where it engages the'tapered edge 42" of a tooth 42.
  • the ear slides along the tapered edge 42" and is partially rotated to position 3, which is above the tapered edge 41" of a lower tooth 41.
  • the ear drops down into engagement with the tapered edge 41" (position 4), sliding downward along said edge until it reaches position 5, atwhich point the cartridgeand its point is in its retracted position.
  • the ear 30 is lifted washer 44 seated upon the upper, end of the latch member 33, thereby limiting the outward movement of the cartridge.
  • FIGS. 8 and 9 The operation of the embodiment of FIGS. 8 and 9 is Upon pressing the tip end of the instrument against a rigid surface, the sleeve 17 will be forced inwardly into the barrel (10 and 11), against the pressure of the compression spring 47. The spring 47 is retained between the flange 48 fixed to the sleeve 17 and the lower side of plug 12. .As the sleeve 17 is forced inwardly, its ears 3% engage the teeth 42 to thereby partially rotate'the sleeve 17' so that its ears 30 are positioned above the teeth 41. Aspressure is released, the ears 30' willnext engage the lower teeth 41 'andwill then assume the position shown in FIGURE 9.
  • the upper latch element 33 may be readily molded integral with the sleeve 3-5.
  • the latch members 33 and 34 can be mounted on and carried by the ball and cartridge unit 29, while the ears 3! or an equivalent latch element can be carried by or fixed in the sleeve 35.
  • a writing instrument comprising: a barrel having upper and lower ends; a writing unit longitudinally movable within said barrel and including a writing point; resilient means urging said writing unit to an extended position whereby said writing point normally extends through the lower end of said barrel, and whereby said writing unit can be moved inwardly relative to said barrel and against the urging of said resilient means upon the application of inwardly directed force to said writing point; a hood unit carried by said barrel and having a lower end normally extending past the lower end of said barrel, said hood unit lower end being longitudinally movable relative to said barrel; a pushbutton mounted on said barrel for depression and release, said pushbutton having an inner portion within said barrel and an outer end outside said barrel; and a retraction-protraction mechanism havin a point retracted position and a point protracted position, said mechanism being engageable with one of said units, said mechanism also being engageable with said pushbutton inner portion, said mechanism being shifted back and forth between said positions in response to longitudinal movement of the unit engageable with said mechanism
  • a writing instrument according to claim 1, wherein said hood unit is engageable with said mechanism and said said mechanism is shifted by movementt of said cartridge unit.
  • a ballpoint writing instrument comprising a tubular barrel having open lower and upper ends, a cartridge unit longitudinally movable within said barrel and having a ballpoint at its lower end, a first spring within said barrel adapted to engage said cartridge whereby said ballpoint is urged to a position extending through said lower end of said barrel, a tubular hood coaxial with said cartridge unit, said hood having an inner end disposed within said barrel and an outer end extending through the open lower end of said barrel, a second spring adapted to urge said hood to an extended position whereby its outer end projects through the lower end of said barrel, a longitudinally movable pushbutton extending through the open upper end of said barrel and having inner and outer portions, a first spring within said barrel adapted to engage said cartridge whereby said ballpoint is urged to a position extending through said lower end of said barrel, a tubular hood coaxial with said cartridge unit, said hood having an inner end disposed within said barrel and an outer end extending through the open lower end of said barrel, a second spring adapted
  • latching mechanism including latch receiving means and latch means, said latch receiving means defining a relatively shallow recess and a relatively deep recess, said latch means being alternatingly engageable within said recessesupon relative longitudinal movement of said latch receiving means and said latch means, one of said means being carried by said cartridge unit and the other of said means being carried by said pushbutton, said relative longitudinal movement being obtained by longitudinally depressing and releasing said pushbutton outer portion, said relative longitudinal movement also being obtained by pressing said writing point and said hood outer end into contact with a rigid surface and then releasing from said contact, said latch means when engaged in said relatively deep recess being operable to allow said point to be extended to its protracted position under influence of said second spring, said latch means when engaged in said relatively shallow recess being operable to retain said point in a retracted position against the pressure of said second spring.
  • a writing instrument having a retractable point comprising: a barrel having upper and lower ends, a cartridge unit longitudinally movable within said barrel and having a writing point at its lower end, a first resilient means adapted to urge said cartridge unit to a position wherein said point extends through the lower end of said barrel, a hood mounted within said barrel for longitudinal movement and having an outer end normally projecting through the lower end of said barrel, a second resilient means adapted to urge said hood to a projecting position whereby its outer end extends through the lower end of said barrel, a pushbutton longitudinally movable within the upper portion of said barrel having an outer end extending through said barrel and an inner end within said barrel and a latching mechanism disposed within said barrel adapted to retain said hood in a retracted position exposing said point, said latching mechanism including a latch receiving means and a latch means, said latch receiving means and said latch means being longitudinally movable relative one another between a point prortracted position and a point retracted position, one of said means being carried by
  • a writing instrument wherein said latch means is held by said cartridge unit and said latch receiving means is held by said pushbutton.
  • a writing instrument wherein said latch receiving means defines a deep recess and a shallow recess and said latch means includes a projecting member engageable with said latch receiving means,'said projecting member when engaged within said deep recess being operable to obtain said point protracted position, said projecting member when engaged within said shallow recess being operable to obtain said point retracted position.
  • A'writing instrument comprising: a barrel having upper and lower ends, a writing unit longitudinally movable within said barrel and including a writing point, resilient means urging said writing unit to an extended position whereby said writing point extends through the lower end of said barrel, a ho'od unit carried by said barrel and having a lower end extending past the lower end of said barrel, said hood unit lower end being longitudinally movable relative to said barrel, a pushbutton having an inner end within said barrel and an outer end outside said barreLVand a retraction-protraction mechanism havinga point retracted position; and a pointrprotracted position, said mechanism being engageable with one of said units, said mechanism also being engageable with said pushbutton, said mechanism being shifted from said point retracted position to said point protracted position in response to longitudinal movement of the unit engageable with saidmechanism obtained by pressing said writing point and said hood unit lower end i-nto contact with a rigid' surface and then releasing from said contact, said mechanism being shifted from said point protracted position
  • a writing instrument comprising: a barrel having upper and lower ends, a writing unit longitudinally movable within said barrel and including a writing point, resilient means urging said writing unit to an extended position whereby said writing point extends through the lower end of said barrel, a hood unit carried by said barrel and having a lower end extending past the lower end of said barrel, said hood unit lower end being longitudinally movable relative to said barrel, a pushbutton having an inner end within said barrel and an outer end outside said barrel, and a retraction-protraction mechanism having a point retracted position and a point protracted position, said mechanism being engageable with one of said units, said mechanism also being engageable with said pushbutton, said mechanism being shifted from said point protracted position to said point retracted position in responseto longitudinal movement of the unit engageable with said mechanism obtained by pressing said writing point and said hood unit lower end into contact with a rigid surface and then releasing from said contact, said mechanism being shifted from said point retracted position to said point protracted position in response to movement of said
US841243A 1959-09-21 1959-09-21 Protraction-retraction mechanism for writing instruments Expired - Lifetime US3051132A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US841243A US3051132A (en) 1959-09-21 1959-09-21 Protraction-retraction mechanism for writing instruments
GB28847/60A GB936676A (en) 1959-09-21 1960-08-19 Projection-retraction mechanism for writing instruments
NL255762D NL255762A (nl) 1959-09-21 1960-09-09
NL255762A NL120339C (nl) 1959-09-21 1960-09-09
DEJ18696A DE1259735B (de) 1959-09-21 1960-09-12 Schreibgeraet
FR838945A FR1267684A (fr) 1959-09-21 1960-09-19 Stylographe avec mécanisme de recul et d'avancement de la pointe à bille
CH1060560A CH365635A (fr) 1959-09-21 1960-09-20 Stylographe
BE595263A BE595263A (fr) 1959-09-21 1960-09-21 Stylographe avec mécanisme de recul et d'avancement de la pointe à bille.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US841243A US3051132A (en) 1959-09-21 1959-09-21 Protraction-retraction mechanism for writing instruments

Publications (1)

Publication Number Publication Date
US3051132A true US3051132A (en) 1962-08-28

Family

ID=25284389

Family Applications (1)

Application Number Title Priority Date Filing Date
US841243A Expired - Lifetime US3051132A (en) 1959-09-21 1959-09-21 Protraction-retraction mechanism for writing instruments

Country Status (5)

Country Link
US (1) US3051132A (nl)
BE (1) BE595263A (nl)
CH (1) CH365635A (nl)
DE (1) DE1259735B (nl)
NL (2) NL120339C (nl)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192904A (en) * 1961-11-09 1965-07-06 Frank T Johmann Writing instrument
US3289638A (en) * 1963-03-29 1966-12-06 Ideal S R L Minuterie Metallic Push button operating device for ball point pens
US3544227A (en) * 1968-10-31 1970-12-01 Parker Pen Co Writing instrument
US3753516A (en) * 1971-10-07 1973-08-21 E Crider Automatic dispenser for toothpaste and the like
US4558963A (en) * 1982-08-30 1985-12-17 International Business Machines Corporation Feed rates and two-mode embodiments for thermal transfer medium conservation
US4991988A (en) * 1989-04-18 1991-02-12 Bic Corporation Component writing instrument having retractable cartridge
US5043546A (en) * 1990-07-16 1991-08-27 Oslo Controls, Incorporated Push-button switch
US5184908A (en) * 1990-11-17 1993-02-09 Kotobuki & Co., Ltd. Writing implement with side actuator
US6261015B1 (en) 2000-01-28 2001-07-17 Bic Corporation Roller ball pen with adjustable spring tension
US6609737B2 (en) * 2000-11-29 2003-08-26 Meritor Light Vehicle Sytems ( Uk) Limited Lock arrangement
US20040175225A1 (en) * 2001-05-14 2004-09-09 Gerhard Mock Writing insert with non-destructive final inspection
US20090118755A1 (en) * 2006-05-27 2009-05-07 Aesculap Ag Surgical Obturator
US20090138034A1 (en) * 2006-05-27 2009-05-28 Aesculap Ag Surgical obturator
US20090290929A1 (en) * 2006-07-07 2009-11-26 Societe Bic Writing instrument with cushioning device
US20090306698A1 (en) * 2006-12-14 2009-12-10 Aesculap Ag Surgical obturator
US20100098478A1 (en) * 2008-10-22 2010-04-22 Beifa Group Co., Ltd. Retractable lamp pen
US20100103653A1 (en) * 2008-10-23 2010-04-29 Beifa Group Co., Ltd. Retractable lamp pen operating in alternate modes
US11267278B2 (en) * 2017-12-20 2022-03-08 Kabushiki Kaisha Pilot Corporation Projectable and retractable writing tool and multi-tip writing tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715077C1 (de) * 1997-04-11 1998-05-07 Guenter Grittmann Zapfhahn
DE102014104126A1 (de) * 2014-03-25 2015-10-01 "Durable" Hunke & Jochheim Gmbh & Co. Kommanditgesellschaft Drehbare und arretierbare Ablageeinrichtung für einen Gegenstand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88655C (nl) *
US370881A (en) * 1887-10-04 Alfred michael
US2671354A (en) * 1950-06-28 1954-03-09 Birome Sa Locking device
DE1013542B (de) * 1954-09-23 1957-08-08 Albert Trefzer Dipl Ing Kugelschreiber mit Vor- und Rueckschubmechanik fuer die Mine
GB810719A (en) * 1956-09-25 1959-03-18 Graf Roland Faber Castell Improvements in retractable ball-point pens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE42547C (de) * J. H. WÜSTER in Ybbs a. d. Donau Bleistifthalter
DE927371C (de) * 1952-03-28 1955-05-05 Georg Meier Jun Fuellschreibstift
GB792155A (en) * 1954-06-28 1958-03-19 Union Carbide Corp Substituted caprolactone and method for the production thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88655C (nl) *
US370881A (en) * 1887-10-04 Alfred michael
US2671354A (en) * 1950-06-28 1954-03-09 Birome Sa Locking device
DE1013542B (de) * 1954-09-23 1957-08-08 Albert Trefzer Dipl Ing Kugelschreiber mit Vor- und Rueckschubmechanik fuer die Mine
GB810719A (en) * 1956-09-25 1959-03-18 Graf Roland Faber Castell Improvements in retractable ball-point pens

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192904A (en) * 1961-11-09 1965-07-06 Frank T Johmann Writing instrument
US3289638A (en) * 1963-03-29 1966-12-06 Ideal S R L Minuterie Metallic Push button operating device for ball point pens
US3544227A (en) * 1968-10-31 1970-12-01 Parker Pen Co Writing instrument
US3753516A (en) * 1971-10-07 1973-08-21 E Crider Automatic dispenser for toothpaste and the like
US4558963A (en) * 1982-08-30 1985-12-17 International Business Machines Corporation Feed rates and two-mode embodiments for thermal transfer medium conservation
US4991988A (en) * 1989-04-18 1991-02-12 Bic Corporation Component writing instrument having retractable cartridge
US5043546A (en) * 1990-07-16 1991-08-27 Oslo Controls, Incorporated Push-button switch
US5184908A (en) * 1990-11-17 1993-02-09 Kotobuki & Co., Ltd. Writing implement with side actuator
US6261015B1 (en) 2000-01-28 2001-07-17 Bic Corporation Roller ball pen with adjustable spring tension
WO2001054920A1 (en) * 2000-01-28 2001-08-02 Bic Corporation Roller ball pen with adjustable spring tension
US6428232B2 (en) 2000-01-28 2002-08-06 Bic Corporation Roller ball pen with adjustable spring tension
US6609737B2 (en) * 2000-11-29 2003-08-26 Meritor Light Vehicle Sytems ( Uk) Limited Lock arrangement
US20040175225A1 (en) * 2001-05-14 2004-09-09 Gerhard Mock Writing insert with non-destructive final inspection
US7147394B2 (en) * 2001-05-14 2006-12-12 Schwan-Stabilo Schwanthausser Gmbh & Co. Kg Writing insert with non-destructive final inspection
US20090118755A1 (en) * 2006-05-27 2009-05-07 Aesculap Ag Surgical Obturator
US8048099B2 (en) 2006-05-27 2011-11-01 Aesculap Ag Surgical obturator
US20090138034A1 (en) * 2006-05-27 2009-05-28 Aesculap Ag Surgical obturator
US8057502B2 (en) 2006-05-27 2011-11-15 Aesculap Ag Surgical obturator
US20090290929A1 (en) * 2006-07-07 2009-11-26 Societe Bic Writing instrument with cushioning device
US8550735B2 (en) * 2006-07-07 2013-10-08 Societe Bic Writing instrument with cushioning device
US20090306698A1 (en) * 2006-12-14 2009-12-10 Aesculap Ag Surgical obturator
US8105348B2 (en) * 2006-12-14 2012-01-31 Aesculap Ag Surgical obturator
US20100098478A1 (en) * 2008-10-22 2010-04-22 Beifa Group Co., Ltd. Retractable lamp pen
US8182167B2 (en) 2008-10-22 2012-05-22 Beifa Group Co., Ltd. Retractable lamp pen
US8632270B2 (en) 2008-10-22 2014-01-21 Beifa Group Co., Ltd. Retractable lamp pen
US20110134630A1 (en) * 2008-10-23 2011-06-09 Beifa Group Co., Ltd. Retractable lamp pen operating in alternate modes
US7887212B2 (en) 2008-10-23 2011-02-15 Beifa Group Co., Ltd. Retractable lamp pen operating in alternate modes
US8262241B2 (en) 2008-10-23 2012-09-11 Beifa Group Co., Ltd. Retractable lamp pen operating in alternate modes
US20100103653A1 (en) * 2008-10-23 2010-04-29 Beifa Group Co., Ltd. Retractable lamp pen operating in alternate modes
US11267278B2 (en) * 2017-12-20 2022-03-08 Kabushiki Kaisha Pilot Corporation Projectable and retractable writing tool and multi-tip writing tool

Also Published As

Publication number Publication date
BE595263A (fr) 1961-03-21
NL255762A (nl) 1964-03-25
DE1259735B (de) 1968-01-25
CH365635A (fr) 1962-11-15
NL120339C (nl) 1965-10-15

Similar Documents

Publication Publication Date Title
US3051132A (en) Protraction-retraction mechanism for writing instruments
US5207522A (en) Knock type mechanical pencil with retractable eraser
US3792931A (en) Writing instrument
US2905147A (en) Protraction-retraction mechanism for writing instruments
US4270870A (en) Mechanical pencil with chuck closing by normal writing grip
US3989389A (en) Multi-color mechanical writing instrument
US3192904A (en) Writing instrument
US1456786A (en) Pen or pencil attachment
US2741226A (en) Ball pen
US2865331A (en) Cam type retractable mechanisms
ES294873A3 (es) Perfeccionamientos en la construcciën de boligrafos
US3291101A (en) Ball pens
US3608154A (en) Clip for writing instrument and method of attaching same
US3179088A (en) Writing instrument
US1583718A (en) Propeller pencil
US3232278A (en) Writing instrument
US3147740A (en) Writing instrument
US5292202A (en) Retractable, refillable, sharpen-free pencil assembly
US1580183A (en) Erasive means for writing implements
US3237604A (en) Writing instrument
US3205862A (en) Mechanical pencils
US2864494A (en) Lipstick structures
US1701263A (en) Magazine pencil
US4056325A (en) Mechanical pencil
US2264463A (en) Mechanical pencil