Knock type pen

• US 10,377,166 B2
• Filed: 12/28/2017
• Issued: 08/13/2019
• Est. Priority Date: 11/24/2017
• Status: Active Grant

• Current Assignee: Dong-A Pencil Co., Ltd.
• Original Assignee: Dong-A Pencil Co., Ltd.
• Inventors: Kim, Hakjae
• Primary Examiner(s): Walczak, David J
• Application Number:
  US15/856,904
• Publication Number:
  US 20190160853A1
• Time in Patent Office: 593 Days
• CPC Class Codes: B43K 24/02 for locking a single writing unit in only fully projected or retracted positions
• CPC Class Codes: B43K 24/06 operated by turning means
• CPC Class Codes: B43K 24/08 operated by push-buttons
• CPC Class Codes: B43K 24/084 with saw-like or analogous cams
• CPC Class Codes: B43K 7/12 with retractable ball points mechanisms for retracting or locking ball points B43K24/00

Abstract

A knock type pen including a housing, a lead which is received in the housing and has an end to which a nib is coupled, and a knock element which protrudes from top of the housing and is pushed, a regulating element which is rotatably installed on an outer circumference of the housing, and a locking element which is provided in the housing and moves up and down by rotation of the regulating element, wherein when the locking element moves up, a press of the knock element is limited by the locking element.

Claims

1. A knock type pen comprising a housing, a lead which is received in the housing, and a knock element protruding from top of the housing, wherein a nib at an end of the lead operates such that the nib is pushed in and out of a bottom of the housing by a pressing motion of the knock element, the knock type pen comprising:

a regulating element which is rotatably installed on an outer circumference of the housing; and

a locking element which is received in the housing and moves up and down by a rotation motion of the regulating element,

wherein when the locking element moves up, a press of the knock element is limited by the locking element.

2. The knock type pen of claim 1,

wherein a guide groove of an oblique line is formed on an inner circumference of the regulating element,

wherein the locking element comprises a blocking section which is installed in an inner side of the housing, and a protrusion which protrudes from an outer side of the blocking section and is inserted into the guide groove of the regulating element, and is installed in the housing to make a linear motion upward and downward.

3. The knock type pen of claim 2, wherein the guide groove has a movement section of an oblique line and a fixing section bent downward from top of the movement section.