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Patent US4071300A successfully refreshed from Google Patents.
US4071300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-pasting toothbrush
Assignee: Individual
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Filing: 1976-09-30
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Granted: 1978-01-31
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Expires: 1996-09-30
Abstract
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.
Inventors
- 👤 Roy A. Nichols
- 👤 Francis L. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/002; A46B11/0024; A46B11/0027; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
244 words
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.
Claim 2
Dependent Claim
244 words
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.
Claim 3
Dependent Claim
23 words
A self-pasting toothbrush as recited in claim 1, wherein said piston means moves towards said connector member upon rotation of said paste reservoir.
Claim 4
Dependent Claim
76 words
A self-pasting toothbrush as recited in claim 2, further including a sealing means positioned in an annular recess formed around the circumference of said piston means and a thread sealing means positioned about said bore in said piston means, said first sealing means being slidably engaged between said piston means and said hollow paste reservoir, and being adapted to prevent toothpaste exit therebetween, said thread sealing means adapted to prevent toothpaste exit along said feed rod.
Claim 5
Dependent Claim
24 words
A self-pasting toothbrush as recited in claim 2, further including an air vent located in said closed end portion of said hollow paste reservoir.
Claim 6
Dependent Claim
24 words
A self-pasting toothbrush as recited in claim 1, wherein said threaded feed rod has an internal bore running throughout the axis of said rod.
Claim 7
Dependent Claim
16 words
A self-pasting toothbrush as recited in claim 3, wherein both of said sealing menas are O-rings.
Claim 8
Dependent Claim
46 words
A self-pasting toothbrush as recited in claim 5, wherein said piston means moves away from said connector means upon rotation of said paste reservoir to force toothpaste towards said closed end of said paste reservoir and through said internal bore inside of said threaded feed rod.
Claim 9
Dependent Claim
161 words
A self-pasting toothbrush as recited in claim 7, further including: a. a first sealing means, said first sealing means being located between two annular recesses, said first recess formed around the circumference of the end portion of said connector means that is engaged to said open end of said paste reservoir, said second recess formed about the interior of said hollow paste reservoir that is engaged to said connector means, said first sealing means adapted to prevent toothpaste escape from between said connector means and said reservoir; b. a second sealing means, said second sealing means positioned within an annular recess formed around the circumference of said piston means, said sealing means being slidably engaged between said piston means and said hollow paste reservoir and adapted to prevent toothpaste exist therebetween; c. a third sealing means, said third sealing means positioned about said bore in said piston means, said third sealing means adapted to prevent toothpaste exit along said feed rod.
Claim 10
Dependent Claim
15 words
A self-pasting toothbrush as recited in claim 8, wherein said three sealing means are O-rings.
Claim 11
Dependent Claim
19 words
A self-pasting toothbrush as recited in claim 1, further including a traveling cover removably mounted over said brush head.
Claim 12
Dependent Claim
35 words
A self-pasting toothbrush as recited in claim 1, wherein said connector means further includes an annular flange surrounding said connector means, said flange adapted to position said paste reservoir with respect to said brush head.
Claim 13
Dependent Claim
175 words
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.
Claim 14
Dependent Claim
175 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |