Patent US3866480A successfully refreshed from Google Patents.
US3866480A
Expired / Lapsed
US
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Orbital vibrator
Assignee: HAMILTON EQUIPMENT Co Inc 5900-C EAST BERRY ST FORT WORTH TX 76119 A TX CORP
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Filing: 1972-06-02
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Granted: 1975-02-18
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Expires: 1992-06-02
Abstract
Abstract An orbital vibrator and a method of using the same is disclosed. The vibrator includes an orbiting rotor driven by the output shaft of a hydraulic motor through a positive drive connection. The positive drive connection may comprise an eccentric lobe on the drive shaft on which the rotor is mounted or a differential cycloidal gear connection between the rotor and shaft which imparts multiple orbital vibrations for each drive shaft revolution. The motor is driven by a hydraulic pump which is pressure compensated and responsive to the requirements of the vibrator operating at the highest pressure. As the rotor oscillates, relief means in the rotor surface maintains orbital contact between the rotor and housing and radial bearing slots in the rotor faces form hydrodynamic bearing surfaces. A hydraulic actuable piston lock for securing the vibrator unit in a bracket secured to the surface to be vibrated is also shown. The method includes monitoring the fluid flow rate and pressure to the drive motor to determine the effectiveness of the vibrational energy transfer to the surface to which the vibrator is attached. When applied to compaction of concrete forms, several vibrators may be selectively operated and alternatively disengaged and advanced along the concrete form and reenergized at a new position. This is continued until the entire length of the form has been vibrated.
Inventors
- 👤 Thomas L Elliston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:38
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/06; E04G21/063; E04G21/065; B; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B06B1/167; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
104 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and cylindrical rotor means having a circular periphery and flat side faces including means associated with at least one side face defining hydrodynamic bearing means, said rotor means being constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 2
Dependent Claim
104 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and cylindrical rotor means having a circular periphery and flat side faces including means associated with at least one side face defining hydrodynamic bearing means, said rotor means being constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 3
Dependent Claim
23 words
The vibrator of claim 1 wherein said bearing means are defined by at least one slot radially extending in said rotor side face.
Claim 4
Dependent Claim
101 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and rotor means constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, said drive means comprises a drive shaft mounted for rotation in said rotor chamber drivingly engaging said rotor through a gear connection, and fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 5
Dependent Claim
101 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and rotor means constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, said drive means comprises a drive shaft mounted for rotation in said rotor chamber drivingly engaging said rotor through a gear connection, and fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 6
Dependent Claim
23 words
The orbiting mass vibrator of claim 3 wherein said gear connection comprises mating differential epicycloidal gear teeth on said rotor and said shaft.
Claim 7
Dependent Claim
75 words
The vibrator of claim 4 wherein said chamber has opposite sidewalls, said drive shaft is mounted in said opposite sidewalls for rotation by means of journals concentric with the axis of said chamber, and said rotor has a predetermined number of internal epicycloidal gear teeth in engagement with a predetermined number of external epicycloidal gear teeth on said drive shaft, the number of teeth in said rotor exceeding the number of teeth on said shaft.
Claim 8
Dependent Claim
139 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and rotor means constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, said drive means includes a drive shaft mounted for rotation in said chamber having eccentric means thereon and wherein said rotor means is mounted on said eccentric means and is positively driven through said eccentric means and resilient means are provided between said rotor and said eccentric means with bearing means inserted between said resilient insert and said eccentric means, and fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid Pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 9
Dependent Claim
139 words
An orbiting mass vibrator comprising: rotor assembly means including an enclosure defining a rotor chamber and rotor means constrained by said chamber, drive means adapted to drive said rotor in an orbital path about said chamber, said drive means includes a drive shaft mounted for rotation in said chamber having eccentric means thereon and wherein said rotor means is mounted on said eccentric means and is positively driven through said eccentric means and resilient means are provided between said rotor and said eccentric means with bearing means inserted between said resilient insert and said eccentric means, and fluid pressure relief means associated with said rotor assembly means, said pressure relief means adapted to relieve the fluid Pressure between said rotor and chamber as the rotor orbits within the chamber thereby reducing the dynamic separation between the rotor and chamber.
Claim 10
Dependent Claim
34 words
The vibrator of claim 6 wherein said housing has opposite sidewalls, and said drive shaft is mounted in said housing sidewalls for rotation by means of journals concentric with the axis of said chamber.
Claim 11
Dependent Claim
29 words
The vibrator of claim 6 wherein said resilient insert means comprises an annular rubber insert radially compressed to preload said insert when the rotor is in a non-operating condition.
Claim 12
Dependent Claim
27 words
The orbiting mass vibrator of claim 6 wherein said fluid relief means comprises at least one groove extending in the direction of movement of the rotor means.
Claim 13
Dependent Claim
15 words
The orbiting vibrator of claim 9 wherein the groove is formed in the rotor means.
Claim 14
Dependent Claim
90 words
An orbiting mass vibrator comprising: housing means defining a rotor chamber having an outer race and opposite side walls, drive shaft means mounted for rotation in said housing, a cylindrical rotor connected to said drive shaft having a cylindrical outer surface and opposite side faces, a driving connection between said rotor and shaft whereby said rotor is caused to orbit around said race with said side faces in close proximity to said housing side walls, and means associated at said rotor and housing side wall interface defining hydrodynamic bearing means.
Claim 15
Dependent Claim
90 words
An orbiting mass vibrator comprising: housing means defining a rotor chamber having an outer race and opposite side walls, drive shaft means mounted for rotation in said housing, a cylindrical rotor connected to said drive shaft having a cylindrical outer surface and opposite side faces, a driving connection between said rotor and shaft whereby said rotor is caused to orbit around said race with said side faces in close proximity to said housing side walls, and means associated at said rotor and housing side wall interface defining hydrodynamic bearing means.
Claim 16
Dependent Claim
23 words
The vibrator of claim 10 wherein said bearing means are defined by at least one radially extending slot in said rotor side wall.
Claim 17
Dependent Claim
19 words
The vibrator of claim 10 wherein said bearing means are defined by slot means in the housing side walls.
Claim 18
Dependent Claim
25 words
The vibrator of claim 10 including lubricating fluid in said housing distributed at said rotor and housing side wall interface upon orbiting of said rotor.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |