Patent US2925532A successfully refreshed from Google Patents.
Patent US3556410A successfully refreshed from Google Patents.
US3556410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray nozzle
Assignee: Individual
•
Filing: 1967-06-12
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Granted: 1971-01-19
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Expires: 1987-06-12
Abstract
Abstract A nozzle for spraying hot or superheated fluid, comprising a nozzle body having a nontapered bore therethrough within which a solid cylindrical core is concentrically mounted. The crosssectional area of the nozzle bore is a little less than twice that of the core, and the outer end of the core is spaced a distance from the discharge end of the nozzle equal to about onethird the length of the nozzle, so that a stream of hot or superheated fluid discharged from the nozzle is caused to contract to form a high-velocity discharge stream of liquid surrounded by steam that can be directed against a surface to clean the same, without drip or drizzle at the nozzle end when in use. The cylindrical core has longitudinally spaced, radial positioning ribs formed thereon, and is received in a counterbore in the inner end of the nozzle body, said inner end having tapered external threads thereon for mating with the tapered pipe threads in a mounting elbow carried by a spray gun barrel. When the nozzle body is threaded into the elbow, the tapered threads cause the rear end of the nozzle body to be contracted to thereby lock or secure the ribbed core in its counterbore.
Inventors
- 👤 Perry Arant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:16
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
120 words
A nozzle for use with a steam cleaning gun or the like, comprising: a tubular body having a cylindrical bore therethrough, one end of said tubular body being an inlet and the other end a discharge; and a solid cylindrical core having a main body portion with radial ribs projecting therefrom and being positioned concentrically within said cylindrical bore with said main body portion spaced throughout its periphery from said cylindrical bore, the downstream or discharge end of said core having a flat face and being spaced inwardly from said discharge end of said tubular body a sufficient distance to prevent dripping or drizzling when in use, the cross-sectional area of said bore being approximately twice that of said core.
Claim 2
Dependent Claim
120 words
A nozzle for use with a steam cleaning gun or the like, comprising: a tubular body having a cylindrical bore therethrough, one end of said tubular body being an inlet and the other end a discharge; and a solid cylindrical core having a main body portion with radial ribs projecting therefrom and being positioned concentrically within said cylindrical bore with said main body portion spaced throughout its periphery from said cylindrical bore, the downstream or discharge end of said core having a flat face and being spaced inwardly from said discharge end of said tubular body a sufficient distance to prevent dripping or drizzling when in use, the cross-sectional area of said bore being approximately twice that of said core.
Claim 3
Dependent Claim
27 words
A nozzle, as recited in claim 1, wherein the cross-sectional area of the bore is about 1.78 times the cross-sectional area of the main body portion core.
Claim 4
Dependent Claim
65 words
A nozzle, as recited in claim 1, wherein the tubular body has a concentric counterbore in the inlet end thereof and wherein the core has a plurality of radially projecting ribs thereon receivable within said counterbore, said ribs being dimensioned to center said core within said cylindrical bore and to space the one end of the core from the discharge end of the tubular body.
Claim 5
Dependent Claim
46 words
A nozzle, as recited in claim 1, wherein the core has one set of radially projecting ribs adjacent one end thereof and a second set of radially projecting ribs located about midway between said one set of ribs and said flat end face of said core.
Claim 6
Dependent Claim
30 words
A nozzle, as recited in claim 1, wherein the other end of the core is beveled and projects outwardly a short distance beyond the inlet end of the tubular body.
Claim 7
Dependent Claim
19 words
A nozzle, as recited in claim 5, wherein the core is about two-thirds as long as the tubular body.
Claim 8
Dependent Claim
24 words
A nozzle, as recited in claim 5, wherein the length of the tubular body is about 1.44 times the length of the cylindrical core.
Claim 9
Dependent Claim
41 words
A nozzle, as recited in claim 1, wherein the cylindrical core is unitary, and wherein the other end of the core is frustoconical, and wherein the flat end face of the core is perpendicular to the longitudinal axis of said core.
Claim 10
Dependent Claim
37 words
A nozzle, as recited in claim 1, wherein the flat end face of the core is set back from the end of the tubular body a distance equal to about one-third the length of the tubular body.
Claim 11
Dependent Claim
159 words
In combination: a hollow fitting adapted to be connected at one end thereof with a source of hot liquid, and having internal pipe threads in its other end; and a nozzle, comprising: a tubular body having a cylindrical bore therethrough extending from an inlet end to a discharge end of said body, said body having a counterbore extending inwardly from said inlet end, the inlet end of said body having external tapered pipe threads thereon for mating with the threads in said fitting; and a cylindrical core mounted in said cylindrical bore, said core having a plurality of radially extending positioning ribs thereon received within said counterbore, at least a portion of said ribs lying in the region of said external pipe threads, said tapered pipe threads on said tubular body and in said fitting cooperating when threaded together to deform said inlet end of said body inwardly to thereby grasp said ribs and secure said core in position.
Claim 12
Dependent Claim
159 words
In combination: a hollow fitting adapted to be connected at one end thereof with a source of hot liquid, and having internal pipe threads in its other end; and a nozzle, comprising: a tubular body having a cylindrical bore therethrough extending from an inlet end to a discharge end of said body, said body having a counterbore extending inwardly from said inlet end, the inlet end of said body having external tapered pipe threads thereon for mating with the threads in said fitting; and a cylindrical core mounted in said cylindrical bore, said core having a plurality of radially extending positioning ribs thereon received within said counterbore, at least a portion of said ribs lying in the region of said external pipe threads, said tapered pipe threads on said tubular body and in said fitting cooperating when threaded together to deform said inlet end of said body inwardly to thereby grasp said ribs and secure said core in position.
Claim 13
Dependent Claim
27 words
The combination, as cited in claim 10, wherein the counterbore terminates in a radial shoulder, and wherein the ribs on said core are seated against said shoulder.
Claim 14
Dependent Claim
22 words
The combination, as recited in claim 10, wherein the cross-sectional area of the cylindrical bore is about twice that of said core.
Claim 15
Dependent Claim
31 words
The combination, as recited in claim 12, wherein the forward end of said core is set back from the discharge end of said body about one-third the length of said body.
Claim 16
Dependent Claim
51 words
The combination, as recited in claim 10, wherein the core includes a frustoconical tip on an end thereof that projects beyond the inlet end of said body, and wherein the other end of said core has a face that lies in a plane perpendicular to the longitUdinal axis of said core.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |