Patent US3889426A successfully refreshed from Google Patents.
US3889426A
Expired / Lapsed
US
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Optical lens generating machine having an air rotatable spherical bearing workpiece holder
Assignee: Bausch and Lomb Inc
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Filing: 1974-01-07
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Granted: 1975-06-17
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Expires: 1994-01-07
Abstract
Abstract An optical lens surfacing machine for separately operating upon each refractive side of an ophthalmic lens carried by a workpiece holder. An operation tool for working upon the lens surface is constructed for total lens surface engagement. The workpiece holder is supported for relatively free pivotable movement, but is power rotated for a period of time upon activation of the machine to decrease the possibility of damaging the refractive side of the lens being operated upon. This holder provides a single machine to be used for lapping and polishing a lens in a minimum number of steps.
Inventors
- 👤 Raymond T Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/10; B24B47/14; B24B13/00; B24B13/005; B24B13/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
An optical lens surfacing machine for operation upon a refractive surface of an optical lens material, comprising: an optical lens surface operation tool for operating upon the refractive surface of the lens material; means for rotatably carrying said operation tool about an axis of rotation; support means for carrying the lens material in relatively free rotation about an optical axis of the lens material; and pneumatic system means for applying a rotation force to said support means for a predetermined duration.
Claim 2
Dependent Claim
81 words
An optical lens surfacing machine for operation upon a refractive surface of an optical lens material, comprising: an optical lens surface operation tool for operating upon the refractive surface of the lens material; means for rotatably carrying said operation tool about an axis of rotation; support means for carrying the lens material in relatively free rotation about an optical axis of the lens material; and pneumatic system means for applying a rotation force to said support means for a predetermined duration.
Claim 3
Dependent Claim
50 words
The invention of claim 1, wherein said pneumatic system means includes means to supply air, an annular ring with air scoops positioned therein connected to said support means and a nozzle to direct an air blast from said air supply means toward the air scoops for applying the rotation force.
Claim 4
Dependent Claim
113 words
An optical lens surfacing machine for operation upon a refractive surface of an optical lens material, comprising: an optical lens surface operation tool for operating upon the refractive surface of the lens material; means for rotating said operation tool about an axis of rotation; support means for carrying the lens material in relatively free rotation about an optical axis of the lens material; means for applying a rotation force to said lens material carrying means; and control system means for activating said rotation force applying means in response to the activation of said means for rotating said operation tool and for deactivating the rotation force applying means after a predetermined duration of time.
Claim 5
Dependent Claim
113 words
An optical lens surfacing machine for operation upon a refractive surface of an optical lens material, comprising: an optical lens surface operation tool for operating upon the refractive surface of the lens material; means for rotating said operation tool about an axis of rotation; support means for carrying the lens material in relatively free rotation about an optical axis of the lens material; means for applying a rotation force to said lens material carrying means; and control system means for activating said rotation force applying means in response to the activation of said means for rotating said operation tool and for deactivating the rotation force applying means after a predetermined duration of time.
Claim 6
Dependent Claim
51 words
The invention of claim 3, wherein said rotation force applying means includes means to supply air, an annular ring with air scoops positioned therein connected to said support means and a nozzle to direct an air blast from said air supply means toward the air scoops for applying the rotation force.
Claim 7
Dependent Claim
44 words
The invention of claim 4, wherein said control system means includes a valve in said air supply means to be opened in response to the activation of said means for rotating said operation tool and to be closed after a predetermined duration of time.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |