US3870282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noiseless air-actuated turbine-type vibrator
Assignee: Individual
•
Filing: 1973-04-30
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Granted: 1975-03-11
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Expires: 1993-04-30
Abstract
Abstract This invention pertains to an air-actuated vibrator of the turbine-type in which the rotor and enclosing chamber is so contoured as to provide within the normal operating range a noise level which is below 85 db (Hertz). Preferably this noise level is about 72 db or less which is much below the tolerant level established as acceptable. The rotor is the only moving part in this vibrator and has its periphery formed with small transverse serrations such as gear-tooth, saw-tooth or similar profiles. The tooth profile is of such small size that the driven rotor which is peripherally driven by pressurized air within a normal supply range produces noise levels which are sufficiently low so that the operation of the vibrator is considered to be virtually silent.
Inventors
- 👤 Theodore S Wadensten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/18; B06B1/186
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
403 words
A relatively silent, compressed gas-actuated, turbine-type vibrator having a rotor of not less than 1 1/4 inches and not more than 5 1/2 inches diameter and within a speed range of 6, 000 to 10,000 rpms having a noise level not greater than 85 decibels hz., the vibrator including: (a) a substantially closed housing having a cylindrical chamber therein; (b) a dynamically unbalanced rotor freely rotatable in the cylindrical bore of the chamber, the diameter and length of the rotor being established so that not less than one thirty-second of an inch clearance is provided between the rotor and ends and bore of the chamber, the rotor having a plurality of tooth-like configurations formed on its outer periphery, the tooth-like configuration further having a depth which corresponds to a distance not exceeding 7 percent and not less than 1 1/2 percent of the diameter of the rotor; (c) an air outlet formed in the housing and extending from the rotor chamber to the outside of the housing, and (d) an air inlet formed in the housing and extending from the outside of the housing to the rotor chamber, the air inlet arranged to direct the incoming pressurized air tangentially against the teeth of the mounted rotor and with the tooth like configurations so formed that in a plane normal to the axis of the rotor the face of the tooth like configuration against which the incoming air impinges defines an angle of intersection with the theoretical radial line of said rotor, said defined angle being as little as 0* and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth like configurations tends to decrease as the radial dIstance from the axis increases and with the tooth-like configuration so formed that in a plane normal to the axis of the rotor the face of the tooth-like configuration against which the incoming air impinges defining an angle of intersection with a theoretical radial line of said rotor, said defined angle being as little as zero and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth-like configurations tend to decrease as the radial distance from the axis increases, the cross-sectional area of the inlet being 30 to 55 percent of the area of the outlet diameter.
Claim 2
Dependent Claim
403 words
A relatively silent, compressed gas-actuated, turbine-type vibrator having a rotor of not less than 1 1/4 inches and not more than 5 1/2 inches diameter and within a speed range of 6, 000 to 10,000 rpms having a noise level not greater than 85 decibels hz., the vibrator including: (a) a substantially closed housing having a cylindrical chamber therein; (b) a dynamically unbalanced rotor freely rotatable in the cylindrical bore of the chamber, the diameter and length of the rotor being established so that not less than one thirty-second of an inch clearance is provided between the rotor and ends and bore of the chamber, the rotor having a plurality of tooth-like configurations formed on its outer periphery, the tooth-like configuration further having a depth which corresponds to a distance not exceeding 7 percent and not less than 1 1/2 percent of the diameter of the rotor; (c) an air outlet formed in the housing and extending from the rotor chamber to the outside of the housing, and (d) an air inlet formed in the housing and extending from the outside of the housing to the rotor chamber, the air inlet arranged to direct the incoming pressurized air tangentially against the teeth of the mounted rotor and with the tooth like configurations so formed that in a plane normal to the axis of the rotor the face of the tooth like configuration against which the incoming air impinges defines an angle of intersection with the theoretical radial line of said rotor, said defined angle being as little as 0* and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth like configurations tends to decrease as the radial dIstance from the axis increases and with the tooth-like configuration so formed that in a plane normal to the axis of the rotor the face of the tooth-like configuration against which the incoming air impinges defining an angle of intersection with a theoretical radial line of said rotor, said defined angle being as little as zero and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth-like configurations tend to decrease as the radial distance from the axis increases, the cross-sectional area of the inlet being 30 to 55 percent of the area of the outlet diameter.
Claim 3
Dependent Claim
402 words
A relatively silent, compressed gas-actuated, turbine-type vibrator having a rotor of not less than 1 1/4 inches and not more than 5 1/2 inches diameter and within a speed range of 6,000 to 10,000 rpms having a noise level not greater than 85 decibels hz., the vibrator including: (a) a substantially closed housing having a cylindrical chamber therein; (b) a dynamically unbalanced rotor freely rotatable in the cylindrical bore of the chamber, the diameter and length of the rotor being established so that not less than one thirty-second of an inch clearance is provided between the rotor and ends and bore of the chamber, the rotor having a plurality of tooth-like configurations formed on its outer periphery, the tooth-like configuration further having a depth which corresponds to a distance not exceeding 7 percent and not less than 1 1/2 percent of the diameter of the rotor; (c) an air outlet formed in the housing and extending from the rotor chamber to the outside of the housing, and (d) an air inlet formed in the housing and extending from the outside of the housing to the rotor chamber, the air inlet arranged to direct the incoming pressurized air tangentially against the teeth of the mounted rotor and with the tooth like configurations so formed that in a plane normal to the axis of the rotor the face of the tooth like configuration against which the incoming air impinges defines an angle of intersection with the theoretical radial line of said rotor, said defined angle being as little as 0* and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth like configurations tends to decrease as the radial dIstance from the axis increases and with the tooth-like configuration so formed that in a plane normal to the axis of the rotor the face of the tooth-like configuration against which the incoming air impinges defining an angle of intersection with a theoretical radial line of said rotor, said defined angle being as little as zero and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the toothlike configurations tend to decrease as the radial distance from the axis increases, the cross-sectional area of the inlet being 30 to 55 percent of the area of the outlet diameter.
Claim 4
Dependent Claim
402 words
A relatively silent, compressed gas-actuated, turbine-type vibrator having a rotor of not less than 1 1/4 inches and not more than 5 1/2 inches diameter and within a speed range of 6,000 to 10,000 rpms having a noise level not greater than 85 decibels hz., the vibrator including: (a) a substantially closed housing having a cylindrical chamber therein; (b) a dynamically unbalanced rotor freely rotatable in the cylindrical bore of the chamber, the diameter and length of the rotor being established so that not less than one thirty-second of an inch clearance is provided between the rotor and ends and bore of the chamber, the rotor having a plurality of tooth-like configurations formed on its outer periphery, the tooth-like configuration further having a depth which corresponds to a distance not exceeding 7 percent and not less than 1 1/2 percent of the diameter of the rotor; (c) an air outlet formed in the housing and extending from the rotor chamber to the outside of the housing, and (d) an air inlet formed in the housing and extending from the outside of the housing to the rotor chamber, the air inlet arranged to direct the incoming pressurized air tangentially against the teeth of the mounted rotor and with the tooth like configurations so formed that in a plane normal to the axis of the rotor the face of the tooth like configuration against which the incoming air impinges defines an angle of intersection with the theoretical radial line of said rotor, said defined angle being as little as 0* and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the tooth like configurations tends to decrease as the radial dIstance from the axis increases and with the tooth-like configuration so formed that in a plane normal to the axis of the rotor the face of the tooth-like configuration against which the incoming air impinges defining an angle of intersection with a theoretical radial line of said rotor, said defined angle being as little as zero and as great as 30* as measured from said point of intersection and inclined in such a direction that the circumferential thickness of the toothlike configurations tend to decrease as the radial distance from the axis increases, the cross-sectional area of the inlet being 30 to 55 percent of the area of the outlet diameter.
Claim 5
Dependent Claim
38 words
A turbine-type vibrator as in claim 1 in which the rotor is provided with gear-like teeth ranging in size from 48 to 24 diametral pitch on rotors whose outer diameters range from 1 3/8 inches to 5 inches.
Claim 6
Dependent Claim
34 words
A turbine-type vibrator as in claim 1 in which the length of the controlling inlet size is between one-eighth and five-sixteenths inch and the diameter of the inlet is between one-tenth and one-quarter inch.
Claim 7
Dependent Claim
88 words
A turbine-type vibrator as in claim 1 in which at least one end of the chamber is closed by a disc and an axle on which the rotor is mounted is secured thereto, the disc adapted to snugly engage mating positioning means formed at the opening and in which the other chamber end wall has an aperture sized to receive and retain the axle which is passed therethrough and by a fastening means the axle and attached disc is tightly drawn into a closing condition of the chamber.
Claim 8
Dependent Claim
28 words
A turbine-type vibrator as in claim 4 in which the rotor is carried on a ball bearing mounted on the axle which is nonrotating when assembled for use.
Claim 9
Dependent Claim
61 words
A turbine-type vibrator as in claim 1 in which rotors of 1 1/4 inches in diameter to and including 3 1/2 inches in diameter have not less than 40 teeth and more than 80 teeth, and rotors of 3 3/4 inches in diameter to and including 5 inches in diameter have not less than 60 teeth and more than 120 teeth.
Claim 10
Dependent Claim
28 words
A turbine-type vibrator as in claim 1 in which the teeth on the rotor are arranged to lay in a plane passing through the axis of the rotor.
Claim 11
Dependent Claim
32 words
A turbine-type vibrator as in claim 1 in which the outlet and the inlet from and to the rotor chamber are each connected to a pipe tap opening formed in the housing.
Claim 12
Dependent Claim
32 words
A turbine-type vibrator as in claim 1 in which the housing is provided with a pair of leg portions providing means for securing the assembled vibrator to a device to be vibrated.
Claim 13
Dependent Claim
35 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 1 3/8 inches diameter has an inlet diameter of one hundred nine-thousandths inch and an outlet diameter of one-quarter inch.
Claim 14
Dependent Claim
26 words
A turbine-type vibrator as in claim 10 in which the rotor of 1 3/8 inches diameter has its tooth profile as 48 diametral pitch or coarser.
Claim 15
Dependent Claim
34 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 1 5/8 inches diameter has an inlet diameter of one hundred sixteen-thousandths and an outlet diameter of one-quarter inch.
Claim 16
Dependent Claim
26 words
A turbine-type vibrator as in claim 12 in which the rotor of 1 5/8 inches diameter has its tooth profile as 32 diametral pitch or coarser.
Claim 17
Dependent Claim
34 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 1 7/8 inches diameter has an inlet diameter of one hundred sixteen-thousandths and an outlet diameter of one-quarter inch.
Claim 18
Dependent Claim
26 words
A turbine-type vibrator as in claim 14 in which the rotor of 1 7/8 inches diameter has its tooth profile as 32 diametral pitch or coarser.
Claim 19
Dependent Claim
33 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 2 inches diameter has an inlet diameter of one hundred sixteen-thousandths and an outlet diameter of five-sixteenths inch.
Claim 20
Dependent Claim
25 words
A turbine-type vibrator as in claim 1 in which The rotor of 2 inches diameter has its tooth profile as 32 diametral pitch or coarser.
Claim 21
Dependent Claim
34 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 2 1/2 inches diameter has an inlet diameter of one hundred sixteen-thousandths and an outlet diameter of five-sixteenths inch.
Claim 22
Dependent Claim
26 words
A turbine-type vibrator as in claim 18 in which the rotor of 2 1/2 inches diameter has its tooth profile as 32 diametral pitch or coarser.
Claim 23
Dependent Claim
36 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 2 3/4 inches diameter has an inlet diameter of one hundred twenty-five-thousandths and an outlet diameter of three hundred ninety-six-thousandths inch.
Claim 24
Dependent Claim
26 words
A turbine-type vibrator as in claim 20 in which the rotor of 2 3/4 inches diameter has its tooth profile as 24 diametral pitch or coarser.
Claim 25
Dependent Claim
37 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 3 1/2 inches diameter has an inlet diameter of one hundred fifty-six-thousandths and an outlet diameter of three hundred ninety-six thousandths inch.
Claim 26
Dependent Claim
26 words
A turbine-type vibrator as in claim 22 in which the rotor of 3 1/2 inches diameter has its tooth profile as 24 diametral pitch or coarser.
Claim 27
Dependent Claim
34 words
A turbine-type vibrator as in claim 1 in which a vibrator having a rotor of 5 inches diameter has an inlet diameter of two hundred twenty-thousandths and an outlet diameter of twenty-seven sixty-fourths inch.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |