Patent US3558871A successfully refreshed from Google Patents.
US3558871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal lamp
Assignee: Individual
•
Filing: 1969-07-07
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Granted: 1971-01-26
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Expires: 1989-07-07
Abstract
Abstract The signal lamp is for use in cafes, night club tables, restaurant tables, cocktail lounges and other locations for the purpose of signalling a waiter when service is desired. The lamp includes a grill-type sleeve frictionally slidable upon an illuminated holder and movable to an upper or a lower position on said holder. The sleeve has an opaque band which stops illumination and indicates when the sleeve is raised that service is desired.
Inventors
- 👤 Herbert J Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:19
CPC Classifications
G; G08; G08B; G08B7/00; G08B7/06; G08B7/068; F; F21; F21V; F21V35/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A signal lamp for use in cafes wherein the lamp has a base, a shade and a holder interposed therebetween for containing a source of light, the improvement comprising a sleeve slidable upon the holder to a position adjacent the base and to a position under the shade, the sleeve having grillwork through which light may pass from the holder and an opaque band between the grillwork and one end of the sleeve.
Claim 2
Dependent Claim
73 words
A signal lamp for use in cafes wherein the lamp has a base, a shade and a holder interposed therebetween for containing a source of light, the improvement comprising a sleeve slidable upon the holder to a position adjacent the base and to a position under the shade, the sleeve having grillwork through which light may pass from the holder and an opaque band between the grillwork and one end of the sleeve.
Claim 3
Dependent Claim
18 words
The device of claim 1, the opaque band in width being approximately one-third the length of the sleeve.
Claim 4
Dependent Claim
26 words
The device as set forth in claim 1, the opaque band being at the lower end of the sleeve and the sleeve frictionally engaging the holder.
Claim 5
Dependent Claim
18 words
The device as set forth in claim 1, the source of illumination in the holder being a candle.
Claim 6
Dependent Claim
16 words
The device of claim 1, the sleeve being of short length in proportion to holder length.
References Cited (Backward Citations)
US1051102A
Cited
US2842658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |