Patent US4229781A successfully refreshed from Google Patents.
US4229781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam-rotary lamp
Assignee: SASAKI ELECTRIC MANUFAC CO Ltd
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Filing: 1979-01-05
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Granted: 1980-10-21
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Expires: 1999-01-05
Abstract
Abstract In a beam-rotary lamp which has a reflector revolving around an electric lamp, an improvement is presented herein which is characterized by that a lamp unit is set together with a power unit comprising a reflector driving motor inside a closed helmet-shaped space, wherein the space is formed with a transparent bowl-shaped globe and an egg-shaped flat chassis put on said globe.
Inventors
- 👤 Shozo Hitora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:34
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2611; F; F21; F21V; F21V21/00; F21V21/08; F21V21/092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
A beam-rotary lamp comprising a substantially egg-shaped chassis; a transparent bowl-shaped globe, said globe being fixed to said chassis and defining therewith an enclosed space having a front and a rear portion, said rear portion being of less height and narrower than said front portion; a lamp unit including a lamp, a reflector and a rotor, said reflector being supported by said rotor, said rotor being arranged substantially horizontally and said lamp unit being positioned in said front portion of said space; a power unit located in said rear portion of said space, said power unit including a motor having a horizontally extending drive shaft; a socket, said lamp being set into said socket; a supporting boss projecting vertically downward from said boss and fixed to said chassis, said rotor being slidably, rotatable positioned over said boss for rotation about a vertical axis, said rotor having a round brim; a rubber ring positioned on said brim; and a corrugated spring washer positioned about said boss to maintain said rubber ring in friction contact with said horizontally extending drive shaft.
Claim 2
Dependent Claim
179 words
A beam-rotary lamp comprising a substantially egg-shaped chassis; a transparent bowl-shaped globe, said globe being fixed to said chassis and defining therewith an enclosed space having a front and a rear portion, said rear portion being of less height and narrower than said front portion; a lamp unit including a lamp, a reflector and a rotor, said reflector being supported by said rotor, said rotor being arranged substantially horizontally and said lamp unit being positioned in said front portion of said space; a power unit located in said rear portion of said space, said power unit including a motor having a horizontally extending drive shaft; a socket, said lamp being set into said socket; a supporting boss projecting vertically downward from said boss and fixed to said chassis, said rotor being slidably, rotatable positioned over said boss for rotation about a vertical axis, said rotor having a round brim; a rubber ring positioned on said brim; and a corrugated spring washer positioned about said boss to maintain said rubber ring in friction contact with said horizontally extending drive shaft.
Claim 3
Dependent Claim
51 words
A rotary-beam lamp in accordance with claim 1, wherein said rubber ring has an upper surface, a lower surface and a peripheral surface, and wherein said shaft of said motor contacts said lower surface of said rubber ring, and said corrugated spring washer is positioned between said socket and said rotor.
Claim 4
Dependent Claim
51 words
A beam-rotary lamp in accordance with claim 1, wherein said rubber ring has an upper surface, a lower surface and a peripheral surface, and wherein said shaft of said motor contacts said upper surface of said rubber ring and said corrugated spring washer is positioned between said rotor and said chassis.
Claim 5
Dependent Claim
31 words
A beam-rotary lamp in accordance with either claim 2 or claim 7, including a coil spring positioned together with said corrugated spring washer to increase the repelling effect of said washer.
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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |