US3628875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying device with hand-held spraying head
Assignee: Individual
•
Filing: 1969-10-16
•
Granted: 1971-12-21
•
Expires: 1989-10-16
Abstract
Abstract An axial blower is mounted on a wall, and a housing having a frustoconical end portion with a tubular extension is removably threaded onto it. This extension carries a flexible tube whose free end is a spraying tip or head in the form of a blind tube with a lateral orifice. Spaced coaxially within the housing by several axially extending vanes is a cylindrical liquid receptacle having a frustoconical end portion with a tubular extension of small fluid-flow cross section extending into the housing extension. The blower exerts pressure on the liquid in the receptacle to drive it through the constriction at the bottom of the receptacle, an airstream flowing around the receptacle entrains these droplets toward an impact (impingement) surface formed at the end of the handpiece to atomize the larger droplets and form a mist which is ejected through the orifice of the endpiece.
Inventors
- 👤 Walter J Wild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:45
CPC Classifications
A; A61; A61M; A61M11/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
206 words
An apparatus for spraying a liquid comprising: a receptacle holding a body of liquid and formed below the liquid level with an aperture; means for applying a gas under superatmospheric pressure to the body in said receptacle to force said liquid through said aperture, and for forming a gas stream adjacent said aperture for entraining droplets of the liquid; conduit means forming a path for the gas stream and entrained liquid droplets and having an end remote from said aperture and formed with an orifice opening laterally of said path; and means adjacent said orifice forming an impact surface transverse to said path for intercepting said droplets and atomizing same, said conduit means further guiding the airstream out through said orifice to entrain the mist produced at said impact surface, said receptacle having an extreme lower end formed with said aperture, said conduit means including a housing receiving said receptacle, a flexible conduit having one end connected to said housing adjacent said aperture, and an endpiece connected to the other end of said conduit and formed with said surface, said housing and said receptacle each having a central axis and being of uniform cross section, said receptacle being spacedly received within and coaxial with said housing.
Claim 2
Independent Claim
206 words
An apparatus for spraying a liquid comprising: a receptacle holding a body of liquid and formed below the liquid level with an aperture; means for applying a gas under superatmospheric pressure to the body in said receptacle to force said liquid through said aperture, and for forming a gas stream adjacent said aperture for entraining droplets of the liquid; conduit means forming a path for the gas stream and entrained liquid droplets and having an end remote from said aperture and formed with an orifice opening laterally of said path; and means adjacent said orifice forming an impact surface transverse to said path for intercepting said droplets and atomizing same, said conduit means further guiding the airstream out through said orifice to entrain the mist produced at said impact surface, said receptacle having an extreme lower end formed with said aperture, said conduit means including a housing receiving said receptacle, a flexible conduit having one end connected to said housing adjacent said aperture, and an endpiece connected to the other end of said conduit and formed with said surface, said housing and said receptacle each having a central axis and being of uniform cross section, said receptacle being spacedly received within and coaxial with said housing.
Claim 3
Dependent Claim
56 words
The apparatus defined in claim 1 wherein said extreme lower end of said receptacle is frustoconical and formed with an axial tubular extension forming said aperture, said housing also having a frustoconical lower end and an axial tubular extension spaced outwardly from said receptacle, said extension of said receptacle extending into said extension of said housing.
Claim 4
Dependent Claim
29 words
The apparatus defined in claim 1 wherein said receptacle is provided with a plurality of radially extending spacer eleMents engaging the interior of said housing and supporting said receptacle.
Claim 5
Dependent Claim
25 words
The apparatus defined in claim 1 wherein said means for applying a gas under pressure is a blower atop said housing and sealingly engaged therewith.
Claim 6
Dependent Claim
15 words
The apparatus defined in claim 4 wherein said housing is threadedly engaged in said blower.
Claim 7
Dependent Claim
52 words
The apparatus defined in claim 1 wherein said endpiece is adapted to be held in the hand and constitutes a blind tube having a longitudinal axis and a radial opening constituting said orifice, the internal end wall of said tube being flat and perpendicular to said longitudinal axis and forming said surface.
Claim 8
Dependent Claim
22 words
The apparatus defined in claim 6 wherein said endpiece is provided with bristles and is adapted to be used as a toothbrush.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |