US4372640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line maker with laser source
Assignee: Individual
•
Filing: 1981-03-23
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Granted: 1983-02-08
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Expires: 2001-03-23
Abstract
Abstract The cylindrical lens eccentrically mounted to a rotating shaft having a predetermined RPM for reciprocal movement in front of the laser beam generating and projecting a visually continuous line perpendicular to the axis of the cylindrical lens.
Inventors
- 👤 Eugene F. LaCroix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/002; G01C15/004; G02; G02B; G02B26/00; G02B26/08; G02B26/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
Means for drawing a visually continuous line upon a regularly replaced object such as a log or the like being cut into lumber comprising: a fixed laser source an appropriate distance from the desired line display, a cylindrical lens mounted between the laser source and the desired line display, said cylindrical lens mounted to a rotating body with its axis perpendicular to the desired line display, and parallel to but non-colinear with the axis of rotation such that it oscillates through the laser beam to form a line of the desired length.
Claim 2
Dependent Claim
92 words
Means for drawing a visually continuous line upon a regularly replaced object such as a log or the like being cut into lumber comprising: a fixed laser source an appropriate distance from the desired line display, a cylindrical lens mounted between the laser source and the desired line display, said cylindrical lens mounted to a rotating body with its axis perpendicular to the desired line display, and parallel to but non-colinear with the axis of rotation such that it oscillates through the laser beam to form a line of the desired length.
Claim 3
Dependent Claim
18 words
Line generating means as in claim 1 wherein the amount of non-collinearity of the two axes is adjustable.
Claim 4
Dependent Claim
17 words
Line generating means as in claim 1, wherein the minimum rotational speed is 800 revolutions per minute.
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) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |