US3413068A - System for controlling extension and retraction of the cartridge in a ballpoint pen - Google Patents

System for controlling extension and retraction of the cartridge in a ballpoint pen Download PDF

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Publication number
US3413068A
US3413068A US537114A US53711466A US3413068A US 3413068 A US3413068 A US 3413068A US 537114 A US537114 A US 537114A US 53711466 A US53711466 A US 53711466A US 3413068 A US3413068 A US 3413068A
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US
United States
Prior art keywords
cartridge
button
push
retraction
pen
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
US537114A
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English (en)
Inventor
Collaud Jean Michel
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.)
Fabrique Suisse de Crayons Caran dAche SA
Original Assignee
Fabrique Suisse de Crayons Caran dAche SA
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 Fabrique Suisse de Crayons Caran dAche SA filed Critical Fabrique Suisse de Crayons Caran dAche SA
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Publication of US3413068A publication Critical patent/US3413068A/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
    • 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

Definitions

  • a ball-point pen having a push-button assembly including a tubular housing the free end of which is adapted to engage a short ink cartridge of large diameter while the interior thereof may receive a long smaller diameter ink cartridge.
  • the assembly includes a threaded coupling slidably carried by the push-button and engageable with a threaded bushing within the pen casing.
  • This invention relates to a means for controlling the extension and retraction of the cartridge in a ball-point pen, comprising a push-button and a mechanism for latching the cartridge in its extended position, and in its retracted position.
  • the control means according to this invention is characterized by the fact that the internal portion of the push-button is tubular which permits the use, in the same pen casing of either of two types of cartridges of different links and diameters.
  • the cartridge of larger diameter is engaged by the front edge of the push-button whereas the cartridge of smaller diameter abuts the rear wall of the tubular portion of the push-button.
  • FIG. 1 is an axial sectional view of the rear portion of a ball-point pen, showing the control system with the cartridge in the retracted position;
  • FIG. 2 is a similar view showing the cartridge in the extended position.
  • a ball-point pen which includes a tubular casing 1 into which is driven a bushing 2 formed with an internal screw thread 3.
  • a push-button consisting of a button proper 5 rigidly connected to a thrust member or tubular housing 6 having an extension 7 thereof driven into an axial hole 8 formed in button 5.
  • Thrust member 6 is slidable through a threaded coupling 9 and abuts against a shoulder 10 formed on its forward end. Thrust member 6 is urged into contact with shoulder 10 by a spring 11 inserted between button 5 and a shoulder 12 formed on the rearward end of coupling 9.
  • Longitudinal grooves 13 are formed on coupling 9 between its threaded portion and its shoulder 12.
  • Two protrusions or lips 14 are likewise formed on the forward extension of button 5. These protrusions or lips engage with grooves 13 whereby to render the push-button assembly 5, 6 angularly rigid with coupling 9. This enables coupling 9 to be screwed into the tapped bore of bushing 2 by rotating button 5.
  • the control system of this invention includes a mechanism for latching cartridge 15 in its extended and retracted positions.
  • This latching mechanism comprises, in the manner well known per se, a heart-shaped cam 16 3,413,068 Patented Nov. 26, 1968 and a follower 17 cooperating therewith.
  • cam 16 is formed in a bushing 18 engaged over extension 7 of thrust member 6 whereby to be rotatable about said extension, while follower 17 is formed on that end portion of coupling 9 which is remote from its threaded end.
  • follower 17 therefore remains stationary with respect to the pen casing 1.
  • button 5 a pressure exerted on button 5 will cause thrust member 6 and bushing 18 to shift forwardly and to thereby cause follower 17 to engage in the heartshaped portion 19 of cam 16.
  • the cartridge return spring located in the tip of the ballpoint pen, will thrust the cartridge back to some extent and, with it, thrust member 6 and bushing 18, with the latter being restrained in its forward position by follower 17 (see FIG. 2).
  • the ramp formed by cam 16 in heart-shaped groove 19 causes bushing 18 to rotate, so that upon release of button 5 follower 17 allows bushing 18 to escape and the latter reverts to its position shown in FIG. 1.
  • thrust member 6 is tubular and forms a cylindrical housing 20 therein.
  • This feature of thrust member 6 is designed to permit the use of either of two cartridges 15-15 of different size, one having a large-diameter reservoir of large capacity, such as the cartridge 15 shown in FIG. 1, and the other a reservoir of smaller diameter but of greater length, such as cartridge 15' shown in FIG. 2.
  • thrust member 6 thrusts against the cartridge by its forward end-section 21 (see FIG. 1).
  • control system for ball-point pens hereinbefore described, thus offers the advantage of enabling either of two cartridges of different ink capacity and different cross-section and length to be used in the same ballpoint pen.
  • a ball-point pen including a casing, means for regulating the extension and retraction of ink cartridges of dilferent sizes, comprising, a push-button rotatably and reciprocally mounted in the upper end of said casing, control means actuated by said push-button for latching the cartridge in its extended and retracted positions, the lower portion of said push-button including a tubular housing with a central bore to permit utilizing within the same pen casing either of two different sizes of cartridges, one of which has a diameter larger than the bore of said tubular housing and against which the lower edge of the push-button housing abuts, and the other of which has a diameter smaller than the bore of said tubular housing and fits within the bore of said tubular housing of said push-button and abuts the bottom wall thereof, a threaded coupling carried by said control means and axially slidable with respect thereto and means within said casing mating with said threaded coupling to connect said control means to said casing.
  • said control means includes a cam
  • said coupling is provided with a cam follower
  • means biasing said pushbutton and coupling apart and a shoulder on said coupling limits displacement of said push-button by said biasing means.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)
  • Basic Packing Technique (AREA)
US537114A 1965-04-15 1966-03-24 System for controlling extension and retraction of the cartridge in a ballpoint pen Expired - Lifetime US3413068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH530165A CH413656A (fr) 1965-04-15 1965-04-15 Dispositif de commande de l'avance et du recul de la cartouche dans un stylo à bille

Publications (1)

Publication Number Publication Date
US3413068A true US3413068A (en) 1968-11-26

Family

ID=4291280

Family Applications (1)

Application Number Title Priority Date Filing Date
US537114A Expired - Lifetime US3413068A (en) 1965-04-15 1966-03-24 System for controlling extension and retraction of the cartridge in a ballpoint pen

Country Status (8)

Country Link
US (1) US3413068A (da)
AT (1) AT297533B (da)
CH (1) CH413656A (da)
DK (1) DK123751B (da)
ES (1) ES324410A1 (da)
FR (1) FR1470937A (da)
GB (1) GB1120044A (da)
SE (1) SE304202B (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH653957A5 (fr) * 1983-09-15 1986-01-31 Caran D Ache Crayons Stylo.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971283A (en) * 1958-05-23 1961-02-14 Parker Pen Co Writing instrument
US2972980A (en) * 1961-02-28 Ball point pen
US3039437A (en) * 1958-08-11 1962-06-19 Parker Pen Co Universal ball point cartridges
GB930464A (en) * 1960-04-05 1963-07-03 Roll Tip England Ltd Improvements in writing instruments
US3119377A (en) * 1958-06-26 1964-01-28 Frank T Johmann Ballpoint cartridge units
US3192904A (en) * 1961-11-09 1965-07-06 Frank T Johmann Writing instrument

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972980A (en) * 1961-02-28 Ball point pen
US2971283A (en) * 1958-05-23 1961-02-14 Parker Pen Co Writing instrument
US3119377A (en) * 1958-06-26 1964-01-28 Frank T Johmann Ballpoint cartridge units
US3039437A (en) * 1958-08-11 1962-06-19 Parker Pen Co Universal ball point cartridges
GB930464A (en) * 1960-04-05 1963-07-03 Roll Tip England Ltd Improvements in writing instruments
US3192904A (en) * 1961-11-09 1965-07-06 Frank T Johmann Writing instrument

Also Published As

Publication number Publication date
AT297533B (de) 1972-03-27
DK123751B (da) 1972-07-31
SE304202B (da) 1968-09-16
CH413656A (fr) 1966-05-15
ES324410A1 (es) 1967-02-01
DE1511341A1 (de) 1969-06-19
GB1120044A (en) 1968-07-17
FR1470937A (fr) 1967-02-24

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