发明授权
- 专利标题: Telescoping chalk holder
- 专利标题(中): 伸缩式粉笔架
-
申请号: US13797528申请日: 2013-03-12
-
公开(公告)号: US09004794B2公开(公告)日: 2015-04-14
- 发明人: Christopher Whigham
- 申请人: Christopher Whigham
- 代理机构: Intellectual Property Center, LLC
- 代理商 Arthur K. Shaffer
- 主分类号: B43K21/22
- IPC分类号: B43K21/22 ; B43K23/016 ; B43K24/00
摘要:
A telescopic chalk holder for drawing upon a drawing surface and including an outer cylinder having a tip at one end, a chalk stick received within the outer cylinder, the tip in radial receipt of the chalk stick, a push rod received by a second end of the outer cylinder and extending at least a portion of the chalk stick through the tip, and a push rod providing pressure to the chalk stick as the tip is manipulated over the drawing surface.
公开/授权文献
- US20140270890A1 TELESCOPING CHALK HOLDER 公开/授权日:2014-09-18
信息查询