Patent US3669321A successfully refreshed from Google Patents.
US3669321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle head for spraying aerosol
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1970-04-15
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Granted: 1972-06-13
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Expires: 1990-04-15
Abstract
Abstract The present invention relates to a nozzle head for spraying aerosol and provides a novel nozzle head for spraying aerosol which head can eliminate the defect that the leakage remained in the valve passage through the nozzle occurs even when the nozzle head valve is closed by stopping the depression thereof and which can prevent the leakage of the remaining liquid immediately after the release of the nozzle head. The construction which characterizes the present invention is such that two valves are interposed in the passage through which the aerosol liquid is sprayed, the first valve being disposed adjacent to the container while the second valve, adjacent to the nozzle orifice; and the spring for the second valve is weaker than that for the first valve so that when spraying is stopped, the first valve is first closed so that the flow of the liquid from the container is stopped and then the second valve adjacent to the nozzle orifice is closed so that the leakage of the liquid remained in the valve passage can be completely prevented.
Inventors
- 👤 Rinnosuke Susuki
- 👤 Hiroshi Hoshi
- 👤 Shinichi Araki
- 👤 Takashi Ohshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:26
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/16; B65D83/162; B65D83/164
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
494 words
A nozzle head for spraying aerosol, comprising a spring seat fitted into the opening of an aerosol container which contains a liquid to be sprayed and a liquidified gas and accommodating a coiled spring therein; a cylindrical valve rod having a passageway therein axially, which is normally held by said coiled spring and is so arranged through a first valve as to establish or interrupt with the interior of said aerosol container; a hollow cylindrical spray head which has a nozzle orifice formed radially through the side wall thereof and is fixed to the upper end of said valve rod; and a second valve which is adapted to establish or interrupt the communication between said nozzle orifice and said valve rod passage and is supported by another spring having a constant smaller than that of said coiled spring, characterized by that: a. a radial passageway is formed across the whole diameter of said valve rod immediately above a large diameter valve seat formed at the lower end of said valve rod to communicate said valve passageway with the outside of said valve rod, and the outer edge of the lowermost end portion of said valve rod is downwardly tapered, while said first valve in the form of a ring made of elastic material is seated upon the upper edge of said spring seat and is fitted around said tapered portion of said valve rod; b. a radial passage in communication with said valve passageway is formed across the whole diameter of said valve rod at the upper and reduced portion of the latter, and said second valve of a ring-shape is fitted around said reduced portion, engaging at the outer periphery portion thereof with the stepped portion of said spray head and being held in position by a retainer, while an annular groove is formed around said valve rod at the position above said second valve and a bore is formed from the top of said valve rod coaxially thereof, being communicated with Said annular groove through a passage; c. said spray head is fitted over the upper end of said valve rod such as its inner wall may slide over said valve rod in the axial direction of the latter, being held at the lowermost end by means of said another spring in the form of a plate in a position, and an upper hollow portion above said inner wall is communicated by a through bore with the lower hollow portion of said spray head, while a groove is formed through a frustoconical projection extending into said upper hollow portion and said nozzle orifice is in a rest state slightly above said annular groove wherein the volume of said upper hollow portion is increased upon the closure of said second valve, resulting in reducing a pressure of liquid remained in said valve passageway in the downstream of said first valve to prevent thereby the leakage or ejection of liquid through said nozzle orifice.
Claim 2
Dependent Claim
494 words
A nozzle head for spraying aerosol, comprising a spring seat fitted into the opening of an aerosol container which contains a liquid to be sprayed and a liquidified gas and accommodating a coiled spring therein; a cylindrical valve rod having a passageway therein axially, which is normally held by said coiled spring and is so arranged through a first valve as to establish or interrupt with the interior of said aerosol container; a hollow cylindrical spray head which has a nozzle orifice formed radially through the side wall thereof and is fixed to the upper end of said valve rod; and a second valve which is adapted to establish or interrupt the communication between said nozzle orifice and said valve rod passage and is supported by another spring having a constant smaller than that of said coiled spring, characterized by that: a. a radial passageway is formed across the whole diameter of said valve rod immediately above a large diameter valve seat formed at the lower end of said valve rod to communicate said valve passageway with the outside of said valve rod, and the outer edge of the lowermost end portion of said valve rod is downwardly tapered, while said first valve in the form of a ring made of elastic material is seated upon the upper edge of said spring seat and is fitted around said tapered portion of said valve rod; b. a radial passage in communication with said valve passageway is formed across the whole diameter of said valve rod at the upper and reduced portion of the latter, and said second valve of a ring-shape is fitted around said reduced portion, engaging at the outer periphery portion thereof with the stepped portion of said spray head and being held in position by a retainer, while an annular groove is formed around said valve rod at the position above said second valve and a bore is formed from the top of said valve rod coaxially thereof, being communicated with Said annular groove through a passage; c. said spray head is fitted over the upper end of said valve rod such as its inner wall may slide over said valve rod in the axial direction of the latter, being held at the lowermost end by means of said another spring in the form of a plate in a position, and an upper hollow portion above said inner wall is communicated by a through bore with the lower hollow portion of said spray head, while a groove is formed through a frustoconical projection extending into said upper hollow portion and said nozzle orifice is in a rest state slightly above said annular groove wherein the volume of said upper hollow portion is increased upon the closure of said second valve, resulting in reducing a pressure of liquid remained in said valve passageway in the downstream of said first valve to prevent thereby the leakage or ejection of liquid through said nozzle orifice.
Claim 3
Dependent Claim
152 words
A nozzle head as specified in claim 1, wherein a. said spring seat is a disk having an opening and is fitted at a bottom portion of a cylindrical opening formed at the top of a container; b. said second valve having a frustoconical head is slidably fitted into a top opening of said spray head having a configuration so as to mate with said frustoconical head, being formed coaxially at the upper portion of a bore of said spray head and has a skirt fitted into said bore, in which skirt is formed another bore, while a helical groove is formed in the inner wall of said bore, being in communication with said nozzle orifice and is normally positioned below said bore, wherein said second valve is in a rest state pressed against an upper and tapered portion of said bore by said another spring in the form of a coil.
Claim 4
Dependent Claim
146 words
A nozzle head as specified in claim 1, wherein a. said valve rod has a semi-spherical head and a passage extending slantingly upwardly from said valve passageway so as to open at the surface of said semi-spherical head; b. said spray head has a cavity formed therein so as to mate with said semi-spherical head, and a lower opening of said cavity is enlarged in diameter for permitting the inclination or rotation of said spray head on a plane containing the axis of said valve rod, while said another spring in the form of a plate is loaded in said enlarged opening, and projections engage with the side surface of said valve rod to prevent the detachment of said spray head; c. said second valve is constituted by said passage in said valve head and said spray nozzle to communicate said cavity to the surrounding atmosphere.
Claim 5
Dependent Claim
52 words
A nozzle head as specified in claim 2, wherein said second spring in the form of a plate is supported upon the top of said valve rod and a passage in communication with said passageway is formed through only one sideway of said valve rod, being positioned normally below said nozzle orifice.
Claim 6
Dependent Claim
359 words
A nozzle head for spraying aerosol comprising: a valve rod having means defining a longitudinal passageway terminating short of at least the inner end of said valve rod; means defining a circumferential indentation in the outer peripheral surface of the valve rod near the inner end of said valve rod; means defining a passageway communicating between said longitudinal passageway and said circumferential indentation; an annulus of resilient material coaxially received in and protruding radially outwardly from said circumferential indentation and normally sealing off communication of said passageway with said circumferential indentation; circumferential clamp means gripping the annulus of resilient material radially outwardly of said indentation and being adapted to secure the nozzle head on an aerosol container; means defining a communication passageway between said longitudinal passageway and the exterior of said valve rod near the outer end of said valve rod; a pushbutton having means defining a socket therein, the outer end of said valve rod being received in said socket; means defining a nozzle paSsageway in said pushbutton, communicating between said socket and the exterior of the push button; spring means received between the pushbutton and the valve rod normally biasing the push button to a first disposition wherein the nozzle passageway is physically cut-off from communication with said communication passageway; said push button being finger actuable in a sense to resiliently distort said spring, as said pushbutton is moved against the action of said spring means to a second disposition wherein the nozzle passageway is in communication via said socket with said communication passageway; said annulus of resilient material being so disposed that further actuation of said pushbutton, after said spring means has resiliently distorted, moves the valve rod axially relative to the clamping means thus resiliently distorting the annulus of resilient material sufficiently to partially pull the annulus from the circumferential indentation and thus expose said passageway to communication with the circumferential indentation; said annulus of resilient material recovering, upon release of said pushbutton, to again seal off communication of said passageway with said circumferential indentation; said spring means recovering, after recovery of said annulus, to again normally bias the pushbutton to said first disposition thereof.
Claim 7
Dependent Claim
359 words
A nozzle head for spraying aerosol comprising: a valve rod having means defining a longitudinal passageway terminating short of at least the inner end of said valve rod; means defining a circumferential indentation in the outer peripheral surface of the valve rod near the inner end of said valve rod; means defining a passageway communicating between said longitudinal passageway and said circumferential indentation; an annulus of resilient material coaxially received in and protruding radially outwardly from said circumferential indentation and normally sealing off communication of said passageway with said circumferential indentation; circumferential clamp means gripping the annulus of resilient material radially outwardly of said indentation and being adapted to secure the nozzle head on an aerosol container; means defining a communication passageway between said longitudinal passageway and the exterior of said valve rod near the outer end of said valve rod; a pushbutton having means defining a socket therein, the outer end of said valve rod being received in said socket; means defining a nozzle paSsageway in said pushbutton, communicating between said socket and the exterior of the push button; spring means received between the pushbutton and the valve rod normally biasing the push button to a first disposition wherein the nozzle passageway is physically cut-off from communication with said communication passageway; said push button being finger actuable in a sense to resiliently distort said spring, as said pushbutton is moved against the action of said spring means to a second disposition wherein the nozzle passageway is in communication via said socket with said communication passageway; said annulus of resilient material being so disposed that further actuation of said pushbutton, after said spring means has resiliently distorted, moves the valve rod axially relative to the clamping means thus resiliently distorting the annulus of resilient material sufficiently to partially pull the annulus from the circumferential indentation and thus expose said passageway to communication with the circumferential indentation; said annulus of resilient material recovering, upon release of said pushbutton, to again seal off communication of said passageway with said circumferential indentation; said spring means recovering, after recovery of said annulus, to again normally bias the pushbutton to said first disposition thereof.
Claim 8
Dependent Claim
147 words
The nozzle head of claim 5 wherein said communication passageway is generally radially directed and emerges into means defining a second circumferential indentation in the outer peripheral surface of the valve rod in communication with said socket; a second resilient annulus coaxially received in and protruding radially outwardly from the second circumferential indentation and normally sealing off communication of said communication passageway with said socket; second circumferential clamp means in the socket of said push button gripping the second annulus radially outwardly of said second indentation, the second resilient annulus being so disposed that actuation of the pushbutton in a sense to resiliently distort said spring means moves the pushbutton relative to the valve rod thus resiliently distorting the second annulus of resilient material sufficiently to partially pull the second annulus from the second circumferential indentation and thus expose said communication passageway to communication with the socket.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |