US4117341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means
Assignee: American Optical Corp
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Filing: 1976-08-02
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Granted: 1978-09-26
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Expires: 1996-08-02
Abstract
Abstract An occluder for interrupting an energy beam is used to control the direction of travel and to stop a moveable member at a reference position from any position remote thereto.
Inventors
- 👤 Staffan B. Persson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:13
CPC Classifications
G; G05; G05D; G05D3/00; A; A61; A61B; A61B3/00; A61B3/10; A61B3/103; A61B3/1035
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
207 words
In an apparatus having a member moveable in first and second directions along a first path, a reference position along said first path, drive means to move said member along said first path in either of said first and second directions and selectively activatable control means operably connected to said drive means for returning said member to said reference position, the improvement comprising, an occluder connected to said member and moveable along a second path in response to movement of said member, one end of said occluder being positioned at a location along said second path when said member is at said reference position, an energy beam interesecting said second path at said location, detecting means for detecting said energy beam and including signal generating means, said occluder interrupting said energy beam when said member is spaced from said reference position in said first direction, said control means, when activated, stopping said drive means in response to a change in the signal from said generating means and said control means, when activated, driving said member in said first direction when said signal indicates the presence of said energy beam and driving said member in said second direction when said signal indicates the absence of said energy beam.
Claim 2
Dependent Claim
207 words
In an apparatus having a member moveable in first and second directions along a first path, a reference position along said first path, drive means to move said member along said first path in either of said first and second directions and selectively activatable control means operably connected to said drive means for returning said member to said reference position, the improvement comprising, an occluder connected to said member and moveable along a second path in response to movement of said member, one end of said occluder being positioned at a location along said second path when said member is at said reference position, an energy beam interesecting said second path at said location, detecting means for detecting said energy beam and including signal generating means, said occluder interrupting said energy beam when said member is spaced from said reference position in said first direction, said control means, when activated, stopping said drive means in response to a change in the signal from said generating means and said control means, when activated, driving said member in said first direction when said signal indicates the presence of said energy beam and driving said member in said second direction when said signal indicates the absence of said energy beam.
Claim 3
Dependent Claim
13 words
the improvement of claim 1 wherein said first and second paths are straight.
Claim 4
Dependent Claim
13 words
The improvement of claim 2 wherein said first and second paths are parallel.
Claim 5
Dependent Claim
24 words
The improvement of claim 1 wherein said refernce position is substantially intermediate said first path, and said location is substantially intermediate said second path.
References Cited (Backward Citations)
US1976611A
Cited
US3673414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |