Patent US4656754A successfully refreshed from Google Patents.
US4656754A
Expired / Lapsed
US
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Lens pattern blank
Assignee: James Instruments Inc
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Filing: 1985-11-14
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Granted: 1987-04-14
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Expires: 2005-11-14
Abstract
Abstract A lens pattern blank has a pattern of concentric circles on one face with the centers of the circle coincident with the center of the mounting hole in the mounting hub thereof and diameter indicators for each circle disposed on the face and within each circle. The blank also includes a protractor pattern on one face having the center point thereof coincident with the center of the central mounting hole and angle indicators on the face for the protractor pattern angles.
Inventors
- 👤 James Cingone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:20
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/003; G02C13/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
In a lens pattern blank having two planar faces, a mounting hub on one face, a circular mounting hole passing through the faces and the hub and a grid pattern on one of the two faces and having the origin of the axes thereof coincident with the center of the mounting hole, the improvement comprising: a pattern of concentric circles on one of the two faces and having the centers thereof coincident with the center of the mounting hole and diameter indicators for each circle disposed on the same face as the circles and at the circumference of each circle.
Claim 2
Dependent Claim
100 words
In a lens pattern blank having two planar faces, a mounting hub on one face, a circular mounting hole passing through the faces and the hub and a grid pattern on one of the two faces and having the origin of the axes thereof coincident with the center of the mounting hole, the improvement comprising: a pattern of concentric circles on one of the two faces and having the centers thereof coincident with the center of the mounting hole and diameter indicators for each circle disposed on the same face as the circles and at the circumference of each circle.
Claim 3
Dependent Claim
39 words
The lens pattern blank according to claim 1, comprising four diameter indicators for each circle and disposed along radii extending at angles 30°-40°, 120°-130°, 210°-220°, 300°-310° with respect to one axis of the grid pattern on the first face.
Claim 4
Dependent Claim
20 words
The lens pattern blank according to claim 2, wherein the radii extend at angles of 35°, 125°, 215° and 305°.
Claim 5
Dependent Claim
42 words
The lens pattern blank according to claim 1, further comprising a protractor pattern on one face and having the center point there coincident with the center of the mounting hole and angle indicators on the same face for the protractor pattern angles.
Claim 6
Dependent Claim
21 words
The lens pattern blank according to claim 1, wherein the diameter indicators for each circle are disposed within each corresponding circle.
Claim 7
Dependent Claim
22 words
The lens pattern blank according to claim 1, wherein the pattern of circles and the grid pattern are disposed on opposite faces.
Claim 8
Dependent Claim
93 words
In a lens pattern blank having two planar faces, a mounting hub on one face, a circular mounting hole passing through the faces and the hub and a grid pattern on one of the two faces and having the origin of the axes thereof coincident with the center of the mounting hole, the improvement comprising: a protractor pattern on one of the two faces and having the center points thereof coincident with the center of the mounting hole and angle indicators on the same face as the protractor pattern for the protractor angles.
Claim 9
Dependent Claim
93 words
In a lens pattern blank having two planar faces, a mounting hub on one face, a circular mounting hole passing through the faces and the hub and a grid pattern on one of the two faces and having the origin of the axes thereof coincident with the center of the mounting hole, the improvement comprising: a protractor pattern on one of the two faces and having the center points thereof coincident with the center of the mounting hole and angle indicators on the same face as the protractor pattern for the protractor angles.
Claim 10
Dependent Claim
52 words
The lens pattern blank according to claim 7, further comprising a pattern of concentric circles on the other of the two faces and having the centers thereof coincident with the center of the mounting hole and four diameter indicators for each circle on said other face and positioned at equal angular intervals.
Claim 11
Dependent Claim
24 words
The lens pattern blank according to claim 8, wherein the diameter indicators are at 30°-40°, 120°-130°, 210°-230°, 300°-310° with reference to the protractor pattern.
Claim 12
Dependent Claim
19 words
The lens pattern blank according to claim 9, wherein the diameter indicators are at 35°, 125°, 215° and 305°.
Claim 13
Dependent Claim
22 words
The lens pattern blank according to claim 7, wherein the grid pattern and the protractor pattern are disposed on the same face.
References Cited (Backward Citations)
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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) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |