Patent ID: 6098230
Filing Date: 2000-08-08
Classification: A46B

Abstract:
A manually operated toothbrush which will move up and down at the same time when moving to and fro, comprising:a head provided with bristles at a front end thereof and being cylindrical in shape at a rear end thereof, said rear end having a curved groove formed with a circular recess;an elongated tubular handle having a cylindrical cavity at a front end thereof adapted to receive said rear end of said head, said handle having a circular through hole aligned with said circular recess and a drain hole at a rear end thereof;a compressed spring fitted within said handle;a T-shaped pin having a circular projection at the upper end and a smaller circular protuberance at the lower end, said T-shaped pin extending through said circular through hole of said handle and said curved groove of said head to join said handle and said head together;wherein said compressed spring is disposed within said handle, said head is fitted in said handle, and said T-shaped pin is inserted into said circular through hole of said handle and said curved groove of said head with said smaller circular protuberance engaged with a lower portion of said circular through hole of said handle thereby keeping said T-shaped pin at a fixed position;whereby when a user moves said toothbrush to and fro, said head will be gradually forced into said handle along said curved groove thereby causing said head to move up and down, and when said head is moved into said handle to the farthest extent, said compressed spring will force said head to go back thus causing said head to move up and down, and when it is not desired to have said head to move up and down, it is only necessary to depress said T-shaped pin to engage said circular projection with said circular recess of said head hence fixedly joining said head to said handle.