US3864047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush With Resilient Pump for Supplying Paste to Brush
Assignee: Individual
•
Filing: 1974-05-23
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Granted: 1975-02-04
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Expires: 1994-05-23
Abstract
Abstract A dispensing or fountain toothbrush has a brush holder to which a paste tube is removably attached inside of a sleeve which serves as a handle. A chamber for paste in the brush holder communicates with a passage leading to the brush bristles and this passage is normally blocked by a spring-urged valve or plunger. An elastic pumping element on the brush holder pressurizes paste within said chamber and opens the valve while simultaneously closing a delivery nozzle through which paste enters the chamber from the paste tube when the pumping element returns to a normal relaxed position.
Inventors
- 👤 James A Sherrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/002; A46B11/0058; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
A paste dispensing brush comprising a brush holder having a paste chamber and a nozzle element projecting into said chamber and a paste outlet passage leading from said chamber to the bristles of a brush head on said holder, a spring-urged valve element on the holder normally blocking said outlet passage, an elastic pumping diaphragm element on said holder in opposed relation to said nozzle element and normally spaced therefrom when in a relaxed state, said pumping diaphragm element when depressed engaging and covering the nozzle element and simultaneously pressurizing paste in said chamber and causing the valve element to move for opening said outlet passage, whereby a measured amount of paste from the chamber is delivered to said brush head bristles, releasing of said pumping diaphragm element and the return thereof to said relaxed state allowing said valve element to block the outlet passage and simultaneously drawing an amount of paste through said nozzle into said chamber equivalent to the amount of paste previously dispensed therefrom, and means on said holder for coupling the same to a container of paste with the container communicating directly with said nozzle element.
Claim 2
Dependent Claim
190 words
A paste dispensing brush comprising a brush holder having a paste chamber and a nozzle element projecting into said chamber and a paste outlet passage leading from said chamber to the bristles of a brush head on said holder, a spring-urged valve element on the holder normally blocking said outlet passage, an elastic pumping diaphragm element on said holder in opposed relation to said nozzle element and normally spaced therefrom when in a relaxed state, said pumping diaphragm element when depressed engaging and covering the nozzle element and simultaneously pressurizing paste in said chamber and causing the valve element to move for opening said outlet passage, whereby a measured amount of paste from the chamber is delivered to said brush head bristles, releasing of said pumping diaphragm element and the return thereof to said relaxed state allowing said valve element to block the outlet passage and simultaneously drawing an amount of paste through said nozzle into said chamber equivalent to the amount of paste previously dispensed therefrom, and means on said holder for coupling the same to a container of paste with the container communicating directly with said nozzle element.
Claim 3
Dependent Claim
66 words
A paste dispensing brush as defined by claim 1, and said last-named means including a threaded opening on said holder in registration with said nozzle element and adapted to receive the threaded neck of a tooth paste tube, and additional screwthreads on said holder for engaging a threaded sleeve member surrounding and enclosing the tooth paste tube and also forming a handle for said dispensing brush.
Claim 4
Dependent Claim
71 words
A paste dispensing brush as defined by claim 1, and said brush holder having a transverse outlet port leading from said outlet passage And intersecting said passage, said brush head bristles having a recess in registration with said port, said spring-urged valve element comprising a plunger element projecting axially into said outlet passage and adapted in one position to cover said port and in a retracted position to uncover said port.
Claim 5
Dependent Claim
57 words
A paste dispensing brush as defined by claim 3, and said holder having a forward bore ahead of the outlet passage, said valve element having a head slidable within said bore, a spring within said bore engaging said head, and an adjustable plug threadably engaging in said bore ahead of said spring and bearing against the spring.
Claim 6
Dependent Claim
47 words
A paste dispensing brush as defined by claim 1, and said elastic pumping diaphragm element having a marginal skirt portion, and said holder having a groove receiving said skirt portion snugly and sealingly, whereby paste in said chamber cannot escape around the margin of the diaphragm element.
Claim 7
Dependent Claim
49 words
A paste dispensing brush as defined by claim 1, and additional coupling means on said holder for receiving a closure cap for covering said brush head and pumping diaphragm element and for receiving a handle forming sleeve which also serves to enclose a paste container coupled to said holder.
Claim 8
Dependent Claim
43 words
A paste dispensing brush as defined by claim 1, and said brush holder having a removable brush head seat thereon, said brush head having a base portion releasably engageable with the seat and being interlocked therewith during use of the paste dispensing brush.
Claim 9
Dependent Claim
166 words
A paste dispensing toothbrush or the like comprising a body portion having a paste holding chamber and a paste inlet nozzle projecting into the chamber and connectable to an external paste source, a brush head secured to the body portion and having a paste receiving cavity, the body portion having a paste outlet passage interconnecting said chamber and brush head cavity, a pressure responsive valve element on the body portion normally blocking communication between the brush head cavity and said outlet passage and opening in response to increasing pressure in said chamber and outlet passage, and a manually operable control element on the body portion having a normal position away from said nozzle and a use position in contact with the nozzle and blocking the nozzle, said control element when in the use position diminishing the volume of said chamber and thereby compressing paste therein to cause opening of the pressure responsive valve element and dispensing into said brush head cavity a measured amount of paste.
Claim 10
Dependent Claim
166 words
A paste dispensing toothbrush or the like comprising a body portion having a paste holding chamber and a paste inlet nozzle projecting into the chamber and connectable to an external paste source, a brush head secured to the body portion and having a paste receiving cavity, the body portion having a paste outlet passage interconnecting said chamber and brush head cavity, a pressure responsive valve element on the body portion normally blocking communication between the brush head cavity and said outlet passage and opening in response to increasing pressure in said chamber and outlet passage, and a manually operable control element on the body portion having a normal position away from said nozzle and a use position in contact with the nozzle and blocking the nozzle, said control element when in the use position diminishing the volume of said chamber and thereby compressing paste therein to cause opening of the pressure responsive valve element and dispensing into said brush head cavity a measured amount of paste.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |