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US 4,071,300 AGranted
Self-pasting toothbrush
OwnerRoy A. Nichols, Francis L. Andersoninventors
Life of this patent
Estimating the term…
Abstract
Self-pasting toothbrush includes a brush head and a hollow paste reservoir cartridge filled with toothpaste. When the reservoir is rotated in relation to the brush head, a piston is actuated to force toothpaste from the reservoir to within the brush bristle portion.
Claims12
A self-pasting toothbrush comprising in combination:
- a. a brush head having a face portion and a bottom end;
- b. brush bristles extending from said face portion of said brush head;
- c. a replaceable cartridge comprising connector means, one end of said connector means removably secured to said bottom end of said brush head, said connector means also having a channel bored therein,
- a hollow paste reservoir having an open end and a closed end, said open end of said paste reservoir engaged to the other end portion of said connector means, said paste reservoir being rotatable in relation to said brush head,
- piston means having a threaded bore therethrough, said piston means being snugly positioned within said paste reservoir, and
- a threaded feed rod, one end of which is fixedly anchored in said connector means, the other end of which is threaded through the bore contained within said piston means, said feed rod extending into said paste reservoir, said various means and members being adapted to permit said piston to move along the axis of said feed rod when said paste reservoir is rotated relative to said brush head, to force any toothpaste located in said reservoir to and through said channel formed in said connector means;
- d. conduit means bored through said brush head to communicate with said channel bored in said connector means, said conduit means adapted to deliver toothpaste to the face portion of said brush and thus to said bristles.
4 more elements
A replaceable toothpaste reservoir cartridge adapted for detachable engagement with the brush head of a self-pasting toothbrush, said cartridge comprising:
- a. a hollow toothpaste reservoir having an open end and a closed end;
- b. connector means, one end of which is adapted for demountable attachment to said brush head, the other end engaged to the open end portion of said toothpaste reservoir, said connector means including means for allowing rotational movement of said reservoir in relation to said brush head;
- piston means having a threaded bore therethrough, said piston means being snugly positioned within said paste reservoir, and
- d. a threaded feed rod, one end of which is fixedly anchored in said connector means, the other end of which is threaded through the bore contained within said piston means, said feed rod extending into said paste reservoir, said various means and members being adapted to permit said piston to move along the axis of said feed rod when said paste reservoir is rotated relative to said brush head to deliver toothpaste to said brush head.
1 more element
Dependencies are inferred from the claim text.