US3665651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for imparting motion to an optical lens
Assignee: J L S Ltd
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Filing: 1971-01-12
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Granted: 1972-05-30
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Expires: 1991-01-12
Abstract
Abstract A device for imparting motion to an optical lens while the latter is held in contact with the working surface of a lensgrinding, smoothing or polishing tool, comprising a lens-holder mounted on a shaft which, at spaced-apart points along its length, passes through or is connected to at least two driven eccentric bearing assemblies of which one is of adjustable eccentricity and the other has two eccentrics driven at two speeds which are in selected ratios to each other so that the shaft is given a substantially uniform but substantially nonrepeating motion by the said eccentric bearing assemblies.
Inventors
- 👤 Stephen Jack Wylde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:09
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
A device for imparting motion to an optical lens while the latter is held in contact with the working surface of a tool, the said device comprising a lens-holder adapted to hold a lens in contact with a tool, a shaft on which the lens-holder is mounted, a first driven eccentric bearing assembly in driving connection with the shaft at one point alOng the length thereof, a second driven bearing assembly in driving connection with the shaft at a second point along the length thereof, said first driven bearing assembly having an eccentric of adjustable eccentricity, and said second driven bearing assembly having two eccentrics arranged to be driven at different speeds in selected ratios to each other whereby the said bearing assemblies impart to the shaft a substantially uniform but substantially ''''non-repeating motion'''' as herein defined.
Claim 2
Independent Claim
137 words
A device for imparting motion to an optical lens while the latter is held in contact with the working surface of a tool, the said device comprising a lens-holder adapted to hold a lens in contact with a tool, a shaft on which the lens-holder is mounted, a first driven eccentric bearing assembly in driving connection with the shaft at one point alOng the length thereof, a second driven bearing assembly in driving connection with the shaft at a second point along the length thereof, said first driven bearing assembly having an eccentric of adjustable eccentricity, and said second driven bearing assembly having two eccentrics arranged to be driven at different speeds in selected ratios to each other whereby the said bearing assemblies impart to the shaft a substantially uniform but substantially ''''non-repeating motion'''' as herein defined.
Claim 3
Dependent Claim
29 words
A device according to claim 1, in which means are provided for holding the shaft against rotation about the longitudinal axis thereof while leaving the shaft free to gyrate.
Claim 4
Dependent Claim
58 words
A device according to claim 2, in which the means for holding the shaft against rotation about the longitudinal axis thereof comprise radial stubs which project from the shaft and are arranged for sliding movement in a ring which is similarly provided with radial arms arranged for sliding movement and projecting at right angles to the radial stubs.
Claim 5
Dependent Claim
42 words
A device according to which the claim 1, in which the eccentric of the first bearing assembly is arranged to be angularly adjusted to vary the eccentricity of the bearing assembly and to be releasably locked in a selected position of adjustment.
Claim 6
Dependent Claim
25 words
A device according to claim 4, in which the first bearing assembly comprises a single driven pulley by means of which the eccentric is rotated.
Claim 7
Dependent Claim
53 words
A device according to claim 4, in which the first bearing assembly comprises a single driven pulley by means of which the eccentric is rotated, the said driven pulley being rotatably supported on a fixed mounting to which means for holding the shaft against rotation about the longitudinal axis thereof are also secured.
Claim 8
Dependent Claim
22 words
A device according to claim 1, in which the two eccentrics of the second bearing assembly are arranged one within the other.
Claim 9
Dependent Claim
40 words
A device according to claim 1, in which the second bearing assembly includes two independently driven pulleys, one for rotating one eccentric of the said bearing assembly and the other for rotating the other eccentric of the said bearing assembly.
Claim 10
Dependent Claim
44 words
A device according to claim 7, in which the inner eccentric of the second bearing assembly has a radial arm which extends over and beyond the outer eccentric and is driven by a stud on a driven pulley associated with the said inner eccentric.
Claim 11
Dependent Claim
24 words
A device according to claim 1, in which the two eccentric bearing assemblies are driven by three drive pulleys mounted on a common shaft.
Claim 12
Dependent Claim
23 words
A device according to claim 1, in which the shaft passes through two self-aligning ball bearings carried by the two eccentric bearing assemblies.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |