Patent US3833786A successfully refreshed from Google Patents.
US3833786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser apparatus for fenestration of contact lenses
Assignee: Continuous Curve Contact Lenses Inc
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Filing: 1973-06-08
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Granted: 1974-09-03
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Expires: 1993-06-08
Abstract
Abstract Laser apparatus for fenestration of contact lenses by forming consistently precise perforations being normal to the adjacent surfaces of the lens and with the inside diameter of the perforations being larger than the outside diameter; and having smooth and effectively polished surfaces. A lens is held by vacuum on a positioning mechanism, which is magnetically held on a base for coarse positioning, and incorporates two-axis stick controlled adjustment means for precise positioning of the lens relative to the laser beam. The lens support has indexing means for rotating the lens to a predetermined number of positions to space the perforations evenly adjacent the periphery of the lens.
Inventors
- 👤 D Brucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/021; B; B28; B28D; B28D1/00; B28D1/14; B28D1/143; B28D1/22; B28D1/221; G02C2200/00; G02C2200/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
Laser apparatus for fenestration of contact lenses, comprising: a housing; a laser mounted on and having its beam path directed toward said housing; said mechanism having a lens holder with a seat for holding a lens thereon, with the peripheral portion of the lens extending into the path of the laser beam; indexing means on said lens holder for rotatably indexing the lens to predetermined peripheral positions relative to the laser beam, said positioning mechanism includes a base plate and a slide block mounted on said base plate for motion in at least one direction, said lens holder being secured to said slide block, said slide block is movable in two orthogonal directions, control means coupled to said slide block for selective movement thereof, a spring arm mounted on said base plate, and said control means comprising a stick pivotally mounted on said spring arm and having an end portion biased into pivotal engagement with said slide block.
Claim 2
Dependent Claim
158 words
Laser apparatus for fenestration of contact lenses, comprising: a housing; a laser mounted on and having its beam path directed toward said housing; said mechanism having a lens holder with a seat for holding a lens thereon, with the peripheral portion of the lens extending into the path of the laser beam; indexing means on said lens holder for rotatably indexing the lens to predetermined peripheral positions relative to the laser beam, said positioning mechanism includes a base plate and a slide block mounted on said base plate for motion in at least one direction, said lens holder being secured to said slide block, said slide block is movable in two orthogonal directions, control means coupled to said slide block for selective movement thereof, a spring arm mounted on said base plate, and said control means comprising a stick pivotally mounted on said spring arm and having an end portion biased into pivotal engagement with said slide block.
Claim 3
Dependent Claim
47 words
Apparatus according to claim 1, and including a support arm extending from said slide block, said lens holder being mounted on one end of the support arm; and means for adjusting said support arm to move the lens holder substantially along the path of the laser beam.
Claim 4
Dependent Claim
35 words
Apparatus according to claim 2, wherein said lens holder comprises a hollow stem with said seat on one end thereof, the other end of said stem having means for connection to a source of vacuum.
Claim 5
Dependent Claim
21 words
Apparatus according to claim 3, wherein said stem is inclined with the seat end thereof extending toward the laser beam path.
Claim 6
Dependent Claim
41 words
Apparatus according to claim 4, wherein said seat is substantially smaller than the lens, the inclination of said stem being such that the peripheral portion of the lens intersecting the path of the laser beam is substantially normal to the beam.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |