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 Title: |
US4978948:
Combined earthquake sensor and night light
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Samen, Lynda S.; Palm Desert, CA 92260
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| Assignee: |
None
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| Published / Filed: |
1990-12-18
/ 1990-03-13
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| Application Number: |
US1990000492467
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| IPC Code: |
Advanced:
B44C 5/00;
F21S 8/00;
F21V 5/06;
F21V 33/00;
G01V 1/00;
G08B 21/10;
F21S 10/06;
IPC-7:
F21V 33/00;
G08B 21/00;
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| ECLA Code: |
G01V1/00E; B44C5/00; F21S8/03G1; F21V5/06; F21V33/00; F21V33/00D4; G08B21/10; R21S10/06;
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| U.S. Class: |
Current:
340/690;
340/321;
362/253;
362/806;
Original:
340/690;
340/321;
362/253;
362/806;
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| Field of Search: |
340/690,669,689,321
362/253,806,810-811
073/652
033/366,365
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| Priority Number: |
| 1990-03-13 |
US1990000492467 |
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| Abstract: |
A combined earthquake sensor and night light having a base with a bottom portion resting on a support surface subject to vibrations. A top portion of the base is provided with a reflective surface and a centrally mounted lamp. A transparent cylinder is mounted on the base member to suspend a multifaceted spherical crystal above the light source by means of an elastic helical spring to enable the spherical crystal to move in all directions. Vibrations generated by an earthquake are transmitted to the base member causing movement of the crystal giving a visual indication of the vibrations by light reflection and diffractio. In the static mode the unit serves as a decorative lamp.
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| Attorney, Agent or Firm: |
Dennison, Meserole, Pollack & Scheiner ;
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| Primary / Asst. Examiners: |
Goldstein, Herbert; Mullen, Jr., Thomas J.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 8 claims |
What is claimed is:
1. In a combined earthquake sensor and night light comprising a base member having a top and bottom, said bottom adapted to rest on a support surface, said top having a light reflective surface, a light source centrally mounted on said top reflective surface, a transparent cylinder mounted on said top base member in coaxial relationship with said light source, an elongated elastic member coaxially suspended at one end from a support means attached to a top portion of said transparent cylinder, and a light scattering means freely suspended from the other end of said elongated elastic member to lie above said light source whereby vibrations transmitted to said base member from said support surface cause relative movement of said light scattering means giving a visual indication of said vibrations.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 16 U.S. patent(s) that reference this one
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