US4184638A — Low noise level, pressure fluid spouting device

Claim 1

Independent Claim 257 words

A low noise level, pressure fluid spouting device comprising inlet means for introducing a pressure fluid therein provided at one end portion of said device, nozzle means connected to said inlet means at one end thereof, for jetting the pressure fluid from the inlet means, said nozzle means having an annular inner wall of a predetermined diameter, said annular inner wall forming a nozzle port communicating with said inlet means; enlarged means connected to the other end of said nozzle means and provided at the other end of said device, for spouting the pressure fluid from said nozzle means, said enlarged means having an annular inner wall with a predetermined distance (d 2 ) between the opposed inner walls larger than that of said nozzle means and a predetermined length (l 0 ) in the axial direction thereof, and a dimensional relationship of said enlarged means comprising 0.67≦l.sub.0 /d.sub.2 ≦1.875, said annular inner wall comprising an enlarged passage communicating with said nozzle port of said nozzle means, whose exit is open to spout the pressure fluid, said enlarged means having an annular outer wall, whereby high negative pressure is produced at said inner wall of said enlarged means, the streams flowing out of said nozzle means steadily and stably cling to said inner wall of said enlarged means and are spouted from the exit of said enlarged means as strong and steady streams beyond said inner wall of said enlarged means, and turbulence at the exit of said enlarged means and the production of screech are prevented.

Claim 2

Dependent Claim 257 words

A low noise level, pressure fluid spouting device comprising inlet means for introducing a pressure fluid therein provided at one end portion of said device, nozzle means connected to said inlet means at one end thereof, for jetting the pressure fluid from the inlet means, said nozzle means having an annular inner wall of a predetermined diameter, said annular inner wall forming a nozzle port communicating with said inlet means; enlarged means connected to the other end of said nozzle means and provided at the other end of said device, for spouting the pressure fluid from said nozzle means, said enlarged means having an annular inner wall with a predetermined distance (d 2 ) between the opposed inner walls larger than that of said nozzle means and a predetermined length (l 0 ) in the axial direction thereof, and a dimensional relationship of said enlarged means comprising 0.67≦l.sub.0 /d.sub.2 ≦1.875, said annular inner wall comprising an enlarged passage communicating with said nozzle port of said nozzle means, whose exit is open to spout the pressure fluid, said enlarged means having an annular outer wall, whereby high negative pressure is produced at said inner wall of said enlarged means, the streams flowing out of said nozzle means steadily and stably cling to said inner wall of said enlarged means and are spouted from the exit of said enlarged means as strong and steady streams beyond said inner wall of said enlarged means, and turbulence at the exit of said enlarged means and the production of screech are prevented.

Claim 3

Dependent Claim 141 words

A low noise level, pressure fluid spouting device according to claim 1, wherein said enlarged means has a tapered portion at an outlet side of said outer wall thereof, in which the outer diameter is gradually decreased with a predetermined angle (θ) to said inner wall of said enlarged means at an exit thereof, and a range of said predetermined angle of said tapered portion is as follows: 3°≦θ≦20°, whereby the angle of the direction of the exterior flow to the direction of the pressure flow from the exit of said enlarged means is reduced by making the exterior flow flow along said tapered portion and the fluctuation in velocity of the spouted jet stream is reduced, and then the turbulence at the exit of said enlarged means, the gas-columnar-vibration based on said turbulence and the production of screech are prevented.

Claim 4

Dependent Claim 65 words

A low noise level, pressure fluid spouting device according to claim 2, wherein an exit of said tapered portion of said enlarged means has a predetermined thickness (t) between said outer wall and said inner wall, and the dimensional relation of said thickness (t) of said tapered portion and the distance (d 2 ) between opposed inner wall of said enlarged means is as follows:

Claim 5

Dependent Claim 51 words

042≦t/d 2 ≦0.125 whereby the amount of the exterior flow accompanied by the pressure flow is adjusted by the thickness (t) of said tip portion of said tapered portion and mixing energy of the exterior flow to the pressure flow becomes small, and the production of screech is more effectively prevented.

Claim 6

Dependent Claim 51 words

042≦t/d 2 ≦0.125 whereby the amount of the exterior flow accompanied by the pressure flow is adjusted by the thickness (t) of said tip portion of said tapered portion and mixing energy of the exterior flow to the pressure flow becomes small, and the production of screech is more effectively prevented.

Claim 7

Dependent Claim 204 words

A low noise level, pressure fluid spouting device according to claim 3, wherein the opening area of said inner wall of said enlarged means is gradually increased from the inlet side to the outlet side in the axial direction thereof, said enlarged passage of said enlarged means having a predetermined angle (α) to the axis of said enlarged passage, said nozzle means has a predetermined opening area (S 1 ) between the opposed inner walls, said enlarged passage of said enlarged means has a predetermined average opening area (S 2 ) of said inner wall, and the relationships of the dimension of said area (S 1 ) of said nozzle means with said area (S 2 ) of said enlarged passage of said enlarged means, and with said angle (α) of said enlarged passage of said enlarged means are as follows: 1.9≦S.sub.2 /S.sub.1 ≦9.4 0.5≦α≦4° whereby the pressure flows move along said inner wall having said predetermined angle (α), the pressure flows having a component of radial flow are spouted from the exit thereof with the angle (α), so that it is less likely for the exterior flow to meet the spouted pressure flow and to mix the exterior flows and said spouted flow.

Claim 8

Dependent Claim 200 words

A low noise level, pressure fluid spouting device according to claim 3, wherein said enlarged means has at least one opening passage extending from said inner wall at a predetermined distance d n between the opposed walls thereof to said outer wall and connecting said enlarged passage and the atmosphere, n'th order opening passage has a predetermined opening area fh n thereof and a distance (1h n ) from said opening passage to said exit of said nozzle means in the axial direction of said enlarged passage, and the relationships of the dimensions of said predetermined distance (d n ) of said enlarged means, predetermined opening area (fh n ) and the distance (1h n ) of said at least one opening passage are as follows: ##STR1## whereby exterior air is introduced within said enlarged passage through opening passages and the pressure flows are exhausted from said enlarged passage to the outside through said at least one opening passage, and flow along said inner wall of said enlarged means, the peripheral pressure flow along said inner wall thereof is strengthened by said introduced exterior flow and the gas-columnar-vibration is damped by introducing the exterior air or exhausting the pressure flows.

Claim 9

Dependent Claim 226 words

A low noise level, pressure fluid spouting device according to claim 3, wherein said nozzle means has a projected nozzle port extending within said enlarged passage of said enlarged means with a predetermined length (l 1 ), said enlarged passage of said enlarged means has a predetermined length (l 0 ') and predetermined distance d 2 between the opposed inner walls, and the relationships of the dimensions of said length (l 1 ) of said projecting nozzle port and said length (l 0 ') and distance (d 2 ) of said enlarged passage are as follows: in case of 3.5≦l.sub.0 '/d.sub.2 and 0.83<l.sub.0 '/(d.sub.2).sup.2, 0.2≦l.sub.1 /d.sub.2 ≦l.sub.0 '/d.sub.2 -0.6; in case of 3.5≦l 0 '/d 2 and 0.83≧l 0 '/(d 2 ) 2 , 0.2≦l.sub.0 '/d.sub.2 ≦2.0 or 0.74l.sub.0 '/d.sub.2 ≦l.sub.1 /d.sub.2 ≦l.sub.0 '/d.sub.2 -0.6; and in case of 3.5≧l.sub.0 '/d.sub.2 ≧1.0 0.27l.sub.0 '/d.sub.2 ≦l.sub.1 /d.sub.2 ≦l.sub.0 '/d.sub.2 -0.6, whereby the relation l 0 '/d 2 of length l 0 ' and the distance d 2 of enlarged means is properly adjusted by the projecting length l 1 of said projected nozzle port, the negative pressure is more effectively produced at said inner wall of said enlarged means and the gas-columnar vibration is damped by the compressive negative region formed by said projected port of said nozzle means and said inner wall of said enlarged means.

Claim 10

Dependent Claim 122 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said enlarged means has at least one opening passage extending from said inner wall at a predetermined distance d n between the opposed walls thereof, to said outer wall and connecting said enlarged passage and atmosphere, n'th order opening passage has a predetermined opening area fh n thereof and a distance (1h n ) from said opening passage to said exit of said nozzle means in the axial direction of said enlarged passage, and the relationships of the dimensions of said predetermined distance (d n ), predetermined opening area (fh n ) and the distance (1h n ) of said at least one opening passage are as follows: ##EQU3##

Claim 11

Dependent Claim 144 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said nozzle means has a projected nozzle port extending within said enlarged passage of said enlarged means with a predetermined length (l 1 ), said enlarged passage of said enlarged means has a predetermined length (l 0 ) and predetermined distance (d 2 ) between the opposed inner wall, the relationships of the dimensions of said length (l 1 ) of said projecting nozzle port and said length (l 0 ) and distance (d 2 ) of said enlarged passage are as follows: in case of 3.5≦l.sub.0 /d.sub.2 and 0.83<l.sub.0 /(d.sub.2).sup.2, 0.2≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6; in case of 3.5≦l.sub.0 /d.sub.2 and 0.83≧l.sub.0 /(d.sub.2).sup.2, 0.2≦l.sub.0 /d.sub.2 ≦2.0 or 0.74 l.sub.0 /d.sub.2 ≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6; and in case of 3.5≧l.sub.0 /d.sub.2 ≧1.0 0.27 l.sub.0 /d.sub.2 ≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6.

Claim 12

Dependent Claim 210 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said enlarged means has at least one opening passage extending from said inner wall to said outer wall and connecting said enlarged passage and the atmosphere, n'th order opening passge has a predetermined distance d n between the opposed walls thereof, a predetermined opening area fh n thereof and a distance 1h n from said opening passage to said exit of said nozzle means in the axial direction of said enlarged passage, the relationships of the dimensions of said predetermined distance d n , predetermined opening area fh n and the distance 1h n of said at least one opening passage are as follows: ##EQU4## said nozzle means has a projected nozzle port extending within said enlarged passage of said enlarged means with a predetermined length (l 1 ), said enlarged passage of said enlarged means has a predetermined length (l 0 ) and predetermined distance (d 2 ) between the opposed inner walls, and the relationships of the dimensions of said length (l 1 ) of said projecting nozzle port and said length (l 0 ) and distance (d 2 ) of said enlarged passage are as follows: in case of 3.5≦l.sub.0 /d.sub.2 and 0.83<l.sub.0 /(d.sub.2).sup.2,

Claim 13

Dependent Claim 40 words

2≦l 1 /d 2 ≦l 0 /d 2 -0.6; in case of 3.5≦l.sub.0 /d.sub.2 and 0.83≧l.sub.0 /(d.sub.2).sup.2, 0.2≦l.sub.0 /d.sub.2 ≦2.0 or 0.74(l.sub.0 /d.sub.2)≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6; and in case of 3.5≧l.sub.0 /d.sub.2 ≧1.0 0.27(l.sub.0 /d.sub.2)≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6.

Claim 14

Dependent Claim 40 words

2≦l 1 /d 2 ≦l 0 /d 2 -0.6; in case of 3.5≦l.sub.0 /d.sub.2 and 0.83≧l.sub.0 /(d.sub.2).sup.2, 0.2≦l.sub.0 /d.sub.2 ≦2.0 or 0.74(l.sub.0 /d.sub.2)≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6; and in case of 3.5≧l.sub.0 /d.sub.2 ≧1.0 0.27(l.sub.0 /d.sub.2)≦l.sub.1 /d.sub.2 ≦l.sub.0 /d.sub.2 -0.6.

Claim 15

Dependent Claim 38 words

A low noise level, pressure fluid spouting device according to claim 3, wherein the diameter of said inner wall of said enlarged means adjacent to said other end of said device is constant in the axial direction thereof.

Claim 16

Dependent Claim 69 words

A low noise level, pressure fluid spouting device according to claim 10, wherein said inner wall of said enlarged means comprises at least two inner walls which are serially provided in the axial direction thereof and respectively connected and each of which has a constant diameter in the axial direction thereof, the diameter of an inlet side inner wall being smaller than that of an outlet side inner wall.

Claim 17

Dependent Claim 71 words

A low noise level, pressure fluid spouting device according to claim 10, wherein said inner wall of said enlarged means comprises two inner walls which are serially provided in the axial direction thereof and respectively connected, the diameter of an inlet side inner wall being constant in the axial direction thereof, and the diameter of an outlet side inner wall being gradually increased towards the exit thereof in the axial direction.

Claim 18

Dependent Claim 41 words

A low noise level, pressure fluid spouting device according to claim 3, wherein the diameter of said inner wall of said enlarged means is gradually increased from the entrance towards the exit of said enlarged means in the axial direction thereof.

Claim 19

Dependent Claim 39 words

A low noise level pressure fluid spouting device according to claim 13, wherein said inner wall of said enlarged means is formed along at least one straight line having a predetermined angle to the axis of said enlarged means.

Claim 20

Dependent Claim 37 words

A low noise level, pressure fluid spouting device according to claim 14, wherein said inner wall of said enlarged means is formed along a straight line having a predetermined angle to the axis of said enlarged means.

Claim 21

Dependent Claim 37 words

A low noise level, pressure fluid spouting device according to claim 14, wherein said inner wall of said enlarged means is formed along two straight lines having different predetermined angles to the axis of said enlarged means.

Claim 22

Dependent Claim 39 words

A low noise level, pressure fluid spouting device according to claim 16, wherein the angle of said inlet side inner wall of said enlarged means is smaller that that of said outlet side inner wall of said enlarged means.

Claim 23

Dependent Claim 39 words

A low noise level, pressure fluid spouting device according to claim 16, wherein the angle of said inlet side inner wall of said enlarged means is larger than that of said outlet side inner wall of said enlarged means.

Claim 24

Dependent Claim 37 words

A low noise level, pressure fluid spouting device according to claim 13, wherein said inner wall of said enlarged means is formed along a curved line having a predetermined angle to the axis of said enlarged means.

Claim 25

Dependent Claim 50 words

A low noise level, pressure fluid spouting device according to claim 19, wherein said inner wall of said enlarged means is formed along said curved line which is radially inwardly offset with respect to a line joining the points of the inlet side and outlet side of said curved line.

Claim 26

Dependent Claim 50 words

A low noise level, pressure fluid spouting device according to claim 19, wherein said inner wall of said enlarged means is formed along said curved line which is radially outwardly offset with respect to a line joining the points of the inlet side and outlet side of said curved line.

Claim 27

Dependent Claim 41 words

A low noise level, pressure fluid spouting device according to claim 3, wherein said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle to the axis of said enlarged means.

Claim 28

Dependent Claim 41 words

A low noise level, pressure fluid spouting device according to claim 3, wherein said tapered portion of said outer wall of said enlarged means is formed along a curved line having a predetermined angle to the axis of said enlarged means.

Claim 29

Dependent Claim 31 words

A low noise level, pressure fluid spouting device according to claim 3, wherein said nozzle means and enlarged means comprise a plurality of nozzle means parts and enlarged means parts, respectively.

Claim 30

Dependent Claim 30 words

A low noise level, pressure fluid spouting device according to claim 24, wherein said nozzle means and enlarged means comprise two nozzle means parts and two enlarged means parts, respectively.

Claim 31

Dependent Claim 30 words

A low noise level, pressure fluid spouting device according to claim 24, wherein said nozzle means and enlarged means comprise three nozzle means parts and three enlarged means parts, respectively.

Claim 32

Dependent Claim 41 words

A low noise level, pressure fluid spouting device according to claim 11, wherein said tapered portion of the outer wall of said enlarged means is formed along a straight line having a predetermined angle to the axis of said enlarged means.

Claim 33

Dependent Claim 173 words

A low noise level, pressure fluid spouting device according to claim 27, wherein said inlet means comprises one opening portion of a hollow cylinder having a constant outer diameter and different inner diameters, said nozzle means comprises an inlet tapered inner wall of said hollow cylinder connecting to said one opening portion, a throttled inner wall having a predetermined diameter of said hollow cylinder connected to said inlet tapered inner wall, and an outlet tapered inner wall of said hollow cylinder connected to said throttled inner wall, said enlarged means comprises a small inner wall of said hollow cylinder, having a constant diameter in the axial direction thereof, connected to said outlet tapered inner wall of said nozzle means, a large inner wall of said hollow cylinder, having a constant diameter in the axial direction larger thereof than that of said small inner wall, connected to said small inner wall by a stepped bottom portion thereof, and said tapered portion provided at the outlet side of said outer wall of said hollow cylinder.

Claim 34

Dependent Claim 85 words

A low noise level, pressure fluid spouting device according to claim 28, wherein said inlet means has a threaded part at the inlet side of said outer wall thereof which engages with a threaded portion of a pressure flow introducing pipe of a gas nozzle having a valve means for controlling the opening and closing of a pressure flow introducing passage of said pipe by suppressing a lever, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.25, θ=6°, t/d.sub.2 =0.083.

Claim 35

Dependent Claim 163 words

A low noise level, pressure fluid spouting device according to claim 27, wherein said inlet means comprises one opening portion of a stepped hollow cylinder, said nozzle means comprises the smallest diameter portion of said stepped hollow cylinder, said smallest diameter portion comprising a throttled inner wall having a predetermined diameter and connected to said one opening portion, said enlarged means comprises the other opening portion of said stepped hollow cylinder comprising a first hollow cylinder portion having constant outer and inner diameters in the axial direction thereof and connected to said throttled inner wall of said nozzle means through a shoulder portion thereof; a second hollow cylinder portion having constant larger outer and inner diameters in the axial direction than those of said first hollow cylinder and connected to said inner wall of said first hollow cylinder portion through a shoulder portion thereof; and said tapered portion provided at the outlet side of said outer wall of said second hollow cylinder portion.

Claim 36

Dependent Claim 85 words

A low noise level, pressure fluid spouting device according to claim 30, wherein said inlet means has a threaded part at the inlet side of said outer wall thereof which engages with a threaded portion of a pressure flow introducing pipe of a gas nozzle having a valve means for controlling the opening and closing of a pressure flow introducing passage of said pipe by suppressing a lever, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.25, θ=6°, t/d.sub.2 =0.083.

Claim 37

Dependent Claim 114 words

A low noise level, pressure fluid spouting device according to claim 28, further comprising an opening passage being opened at said throttled inner wall of said nozzle means and communicating with a liquid paint supply means through a conduit, and wherein said inlet means has a threaded part at the inlet side of said outer wall thereof which engages with a threaded portion of a pressure fluid introducing pipe of a paint spraying means having a valve means for controlling the opening and closing of a pressure flow introducing passage of said pipe by suppressing a lever, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.5, θ=10°, t/d.sub.2 =0.10.

Claim 38

Dependent Claim 43 words

A low noise level, pressure fluid spouting device according to claim 27, wherein said nozzle means has a projected nozzle port extending into said enlarged passage of said first hollow cylindrical portion of said enlarged means with a predetermined length (l 1 ).

Claim 39

Dependent Claim 86 words

A low noise level, pressure fluid spouting device according to claim 33, wherein said inlet means has a threaded part at the inlet side of said outer wall thereof which engages with a threaded portion of a pressure flow introducing pipe of a paint spraying means having a valve means for controlling the opening and closing of a pressure flow introducing passage of said pipe by suppressing a lever, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.5, θ=10°, t/d.sub.2 =0.10.

Claim 40

Dependent Claim 206 words

A low noise level, pressure fluid spouting device according to claim 11, wherein said inlet means comprises one opening portion of a stepped hollow cylinder, said nozzle means comprises the smallest diameter portion of said stepped hollow cylinder, said smallest diameter portion comprising a throttled inner wall having a predetermined diameter and connected to said one opening portion, said enlarged means comprises the other opening portion of said stepped hollow cylinder comprising a first hollow cylinder portion having constant outer and inner diameters in the axial direction thereof and connected to said throttled inner wall of said nozzle means through a curved shoulder portion thereof; a second hollow cylinder portion having constant larger outer and inner diameters in the axial direction than those of said first hollow cylinder and connected to said inner wall of said first hollow cylinder portion through a curved shoulder portion thereof; and said tapered portion being formed along a curved line which is radially inwardly offset with respect to a line joining the points of the inlet side and outlet side of said outer wall of said second hollow cylinder portion and has a predetermined angle θ to said enlarged passage of said second hollow cylinder portion at the exit thereof.

Claim 41

Dependent Claim 45 words

A low noise level, pressure fluid spouting device according to claim 35, wherein said inlet means is connected to a pressure exhausting supply source through an exhaust pipe, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.42, θ=12°, t/d.sub.2 =0.071.

Claim 42

Dependent Claim 206 words

A low noise level, pressure fluid spouting device according to claim 11, wherein said inlet means comprises one opening portion of a stepped hollow cylinder, said nozzle means comprises the smallest diameter portion of said stepped hollow cylinder, said smallest diameter portion comprising a throttled inner wall having a predetermined diameter and connected to said one opening portion, said enlarged means comprises the other opening portion of said stepped hollow cylinder comprising a first hollow cylinder portion having constant outer and inner diameters in the axial direction and connected to said throttled inner wall of said nozzle means through a stepped shoulder portion thereof, and a second hollow cylinder portion having constant larger outer and inner diameters in the axial direction than those of said first hollow cylinder and connected to said inner wall of said first hollow cylinder portion through a stepped shoulder portion thereof, and said tapered portion being formed along a curved line which is radially inwardly offset with respect to a line joining the points of the inlet side and outlet side of said outer wall of said second hollow cylinder portion and has a predetermined angle (θ) to said enlarged passage of said second hollow cylinder portion at the exit thereof.

Claim 43

Dependent Claim 45 words

A low noise level, pressure fluid spouting device according to claim 37, wherein said inlet means is connected to a pressure exhausting supply source through an exhaust pipe, and the dimensional relationship of said enlarged means is as follows: l.sub.0 /d.sub.2 =1.42, θ=12°, t/d.sub.2 =0.071.

Claim 44

Dependent Claim 63 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said inner wall of said enlarged means is formed along a straight line having a predetermined angle to the axis of said enlarged means, and said tapered portion of outer wall of said enlarged means is formed along a straight line having a predetermined angle to said inner wall thereof.

Claim 45

Dependent Claim 145 words

A low noise level, pressure fluid spouting device according to claim 9, wherein said inner wall of said enlarged means comprises two inner walls which are axially provided and respectively connected, the diameter of the inlet side of one inner wall being constant in the axial direction thereof, and the diameter of the outlet side of the other inner wall being gradually increased towards the exit thereof in the axial direction, said tapered portion of said outer wall of said enlarged means is formed along a curved line joining the points of the inlet side and outlet side of said outer wall of said enlarged means and has a predetermined angle θ to said inner wall at the exit thereof, and said at least one opening passage comprises one opening passage being provided at said inlet side of one inner wall of said enlarged means.

Claim 46

Dependent Claim 84 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said inner wall of said enlarged means is formed along a curved line which is radially inwardly offset with respect to a line joining the points of the inlet side and outlet side of said curved line, said tapered portion of said outer wall of said enlarged means is formed along a curved line having a predetermined angle θ to said inner wall of said enlarged means at the exit thereof.

Claim 47

Dependent Claim 84 words

A low noise level, pressure fluid spouting device according to claim 4, wherein, said inner wall of said enlarged means is formed along a curved line which is radially outwardly offset with respect to a line joining the points of the inlet side and outlet side of said curved line, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said inner wall of said enlarged means at the exit thereof.

Claim 48

Dependent Claim 75 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said inner wall of said enlarged means comprises two straight inner walls, said angle of said inlet side inner wall is smaller than that of said outlet side inner wall, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said outlet side inner wall of said enlarged means.

Claim 49

Dependent Claim 84 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said inner wall of said enlarged means comprises two straight inner walls, which are serially provided in the axial direction thereof, said angle of said inlet side inner wall is larger than that of said outlet side inner wall, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said outlet side inner wall of said enlarged means.

Claim 50

Dependent Claim 44 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said nozzle means and enlarged means comprise respectively two nozzle means and enlarged means parts, which are divided by a plate member inserted within said nozzle means and said enlarged means,

Claim 51

Dependent Claim 59 words

said inner annular wall of said two enlarged means parts is formed along a straight line having predetermined angles to the axis of said two enlarged means parts, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said inner annular wall of said enlarged means.

Claim 52

Dependent Claim 59 words

said inner annular wall of said two enlarged means parts is formed along a straight line having predetermined angles to the axis of said two enlarged means parts, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said inner annular wall of said enlarged means.

Claim 53

Dependent Claim 104 words

A low noise level, pressure fluid spouting device according to claim 4, wherein said nozzle means and enlarged means comprises respectively three nozzle means parts and three enlarged means parts, which are divided by two intermediate members provided within said nozzle means and enlarged means, said inner wall of said three enlarged means parts are formed along a straight line having a predetermined angles to the respective axis of said three enlarged means parts, said tapered portion of said outer wall of said enlarged means is formed along a straight line having a predetermined angle θ to said inner walls of said enlarged means.

Claim 54

Dependent Claim 158 words

A low noise level, pressure fluid spouting device according to claim 10, wherein said inlet means comprises one opening portion of a hollow cylinder having a constant outer diameter and different inner diameters, said nozzle means comprises an inlet tapered inner wall of said hollow cylinder connected to said one opening portion, a throttled inner wall having a predetermined diameter of said hollow cylinder connected to said inlet tapered inner wall, and an outlet tapered inner wall of said hollow cylinder connected to said throttled inner wall, said enlarged means comprises a small inner wall of said hollow cylinder having a constant diameter in the axial direction thereof, connected to said outlet inner wall of said nozzle means through a shoulder portion thereof; said tapered portion being formed along a straight line having a predetermined angle to the axis of said enlarged means and being provided at the outlet side of said outer wall of said hollow cylinder.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-01-21	1983-07-23	1984-01-22	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-01-21	1987-07-23	1988-01-22	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-01-21	1991-07-23	1992-01-22	$7700.00	Window Closed / Lapsed

Low noise level, pressure fluid spouting device

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