Writing pen with retractable clip
AssigneeC. Josef Lamy GmbH
InventorGunter Eppler
Life of this patent
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Abstract
A writing instrument including a clip which can be retracted into an opening of a barrel, and an operating unit which has a pushbutton and an operating cam. The writing instrument can be operated by a single operating means, while the clip can function only when the writing cartridge is retracted. The operating cam and a guide slot are disposed in a common cam member connected with the pushbutton. The clip has a projection which terminates in the interior of the barrel and engages the guide slot.
Claims30
A writing instrument comprising a barrel, an ink cartridge arranged within said barrel and having a writing tip, a clip arranged for retraction into an opening in said barrel, a pushbutton, and an operating unit operated by said pushbutton comprising a guide slot for controlling said clip and an operating cam for moving said ink cartridge forward and backward in said barrel to extend or retract said writing tip of said ink cartridge, wherein said guide slot and said operating cam are arranged on a common cam member, said cam member is connected to and actuated by said pushbutton, said clip has a projection which terminates interiorly of said barrel and is engaged with said guide slot;
- said operating cam is located in a tongue of said cam member, said tongue being arranged alongside the cartridge;
- said tongue of said cam member comprising a cam lobe which is engaged by a forward end of said clip, and said cam lobe and said guide slot cooperating with one another such that, when the pushbutton is actuated, said clip moves substantially parallel to the longitudinal axis of said barrel.
Dependencies are inferred from the claim text.