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 Title: |
US4812654:
Two-axis quartz fiber passive tilt meter
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Araujo, Richard K.; Tewksbury, MA
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| Assignee: |
The Charles Stark Draper Laboratory, Inc., Cambridge, MA
other patents from CHARLES STARK DRAPER LABORATORY, INC. (98855) (approx. 419)
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| Published / Filed: |
1989-03-14
/ 1986-12-29
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| Application Number: |
US1986000946885
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| IPC Code: |
Advanced:
G01C 9/06;
G01C 9/14;
Core:
G01C 9/00;
IPC-7:
G01C 9/06;
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| U.S. Class: |
Current:
250/338.1;
033/366.12;
033/366.23;
033/392;
Original:
250/338.1;
033/366;
033/392;
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| Field of Search: |
250/338 R,341
033/391,392,365,348,366
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| Priority Number: |
| 1986-12-29 |
US1986000946885 |
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| Abstract: |
A two-axis quartz fiber passive tilt meter which includes housing and a quartz fiber suspended from the housing for conducting radiation and emitting the radiation from a distal end thereof. A pendulous mass is suspended from the quartz fiber and a damping fluid in the housing surrounds the quartz fiber and the mass. A detector senses the position of the spot of radiation emitted from the quartz fiber.
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| Attorney, Agent or Firm: |
Iandiorio, Joseph S. ;
Dingman, Brian M. ;
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| Primary / Asst. Examiners: |
Howell, Janice A.; Rauchholz, William F.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 14 claims |
What is claimed is:
1. A two-axis quartz fiber passive tilt meter comprising:
- a housing;
- a quartz fiber suspended from said housing for conducting radiation and emitting said radiation from a distal end thereof;
- a pendulous mass suspended from said quartz fiber;
- a damping fluid in said housing surrounding said quartz fiber and said mass, said damping fluid having an index of refraction close to that of said quartz fiber for optically cladding said fiber; and
- detector means for sensing the position of a spot of radiation emitted from said quartz fiber.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 9 U.S. patent(s) that reference this one
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