Patent ID: 7314325

Claim:
A pen-and-electronic device assembly comprising: a barrel; a writing member mounted in said barrel and extending through said barrel for writing purpose; and an electronic device connected detachably to said barrel and including a housing having a battery-mounting part that extends into said barrel, and that includes top and bottom walls and a peripheral wall interconnecting said top and bottom walls and cooperating with said top and bottom walls to define an enclosed battery compartment which is adapted to receive a battery unit therein, said top and bottom walls being respectively provided with upper and lower contacts, and a circuit unit mounted in said housing and adapted to be coupled to the battery unit through said upper and lower contacts; wherein said peripheral wall of said battery-mounting part includes a first portion extending between and fixed to peripheral edges of said top and bottom walls and having an open end that defines an access opening, and a second portion connected detachably to said open end of said first portion for covering said access opening and fastened to said bottom wall of said battery-mounting part.