US3877822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain brush
Assignee: Joanell Labs Inc
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Filing: 1973-10-23
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Granted: 1975-04-15
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Expires: 1993-10-23
Abstract
Abstract A brush for painting small objects having a reservoir of lacquer in the handle. The brush is permanently held in the handle and emerges when the cover is removed and the handle turned upside down. The handle contains a ball valve and a brush support which regulate the flow of laquer to the brush and prevent dripping.
Inventors
- 👤 Joseph L Lamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
A; A45; A45D; A45D34/00; A45D34/04; A45D34/042; A45D34/043; A46; A46B; A46B11/00; A46B11/001; A46B11/0013
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
A fountain brush comprising: a cylindrical container closed at its lower end and defining an internal reservoir for the storage of liquids, a piston chamber secured to the upper end of the container and housing a movable brush support therein, said piston chamber formed with an opening at its upper end which permits the passage of a brush connected to the upper end of said brush support, a first annular constriction in said opening whicH retains the support within the chamber and forms a first valve which is opened as soon as the brush is depressed, a second valve intermediate the ends of said chamber for limiting the flow of liquid from the reservoir to the piston chamber when the cylindrical container is inverted, said second valve including a second annular constriction of the piston chamber and a spherical ball independently movable within the chamber, and a cylindrical extension axially mounted on the brush support for dislodging the ball to open the second valve when the container is in the inverted position and the brush is depressed a predetermined distance after opening the first valve.
Claim 2
Dependent Claim
185 words
A fountain brush comprising: a cylindrical container closed at its lower end and defining an internal reservoir for the storage of liquids, a piston chamber secured to the upper end of the container and housing a movable brush support therein, said piston chamber formed with an opening at its upper end which permits the passage of a brush connected to the upper end of said brush support, a first annular constriction in said opening whicH retains the support within the chamber and forms a first valve which is opened as soon as the brush is depressed, a second valve intermediate the ends of said chamber for limiting the flow of liquid from the reservoir to the piston chamber when the cylindrical container is inverted, said second valve including a second annular constriction of the piston chamber and a spherical ball independently movable within the chamber, and a cylindrical extension axially mounted on the brush support for dislodging the ball to open the second valve when the container is in the inverted position and the brush is depressed a predetermined distance after opening the first valve.
Claim 3
Dependent Claim
42 words
A fountain brush as claimed in claim 1 wherein said piston chamber is formed with a third annular constriction at the lower end of the chamber for retaining the ball within the chamber when the cylindrical container is in its upright position.
Claim 4
Dependent Claim
20 words
A fountain brush as claimed in claim 1 wherein the piston chamber is made of deformable material such as polyethylene.
Claim 5
Dependent Claim
25 words
A fountain brush as claimed in claim 1 wherein the cylindrical container is formed with a threaded neck for the attachment of a closure cap.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |