Patent US3784867A successfully refreshed from Google Patents.
US3784867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp
Assignee: DUPREE Inc
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Filing: 1972-10-06
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Granted: 1974-01-08
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Expires: 1992-10-06
Abstract
Abstract A lamp having a bulb fixed in the housing and a moving socket engaging pin spring loaded to an extended position. A housing with an inner insulating sleeve molded in place in an outer metal sleeve with a cup-shaped conductor pin retained by the housing and receiving a spring welded to a bulb lead, with the springbulb lead connection encapsulated and with the bulb cemented in the housing with the other lead spot welded to the outer sleeve.
Inventors
- 👤 J Dupree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:10
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/46; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
In a spring loaded lamp adapted to be mounted in a socket in locking engagement, the combination of: a bulb having first and second leads; a coil spring having a first end welded directly to said first lead and having a second free end, said spring having a closed turn adjacent said first lead; a conductor having a spring receiving cup at one end and a socket contacting pin at the other end; a tubular housing comprising interengaging outer metal and inner insulating sleeves, with said inner sleeve molded in place in said outer sleeve and having a central zone terminating in a shoulder for engaging said cup and having an opening for said socket pin, said outer sleeve having an outwardly turned rim and with said Bulb positioned in said outer sleeve with said second lead bent 180* and positioned between said bulb and outer sleeve, with the second lead end overlying and welded directly to said rim; and a solid potting material positioned between said bulb and spring about said leads and filling said closed turn mechanically supporting said spring and leads and electrically insulating said leads from each other; with said conductor in said housing sliding in said zone with said spring free end in said cup and urging said pn into said housing.
Claim 2
Dependent Claim
217 words
In a spring loaded lamp adapted to be mounted in a socket in locking engagement, the combination of: a bulb having first and second leads; a coil spring having a first end welded directly to said first lead and having a second free end, said spring having a closed turn adjacent said first lead; a conductor having a spring receiving cup at one end and a socket contacting pin at the other end; a tubular housing comprising interengaging outer metal and inner insulating sleeves, with said inner sleeve molded in place in said outer sleeve and having a central zone terminating in a shoulder for engaging said cup and having an opening for said socket pin, said outer sleeve having an outwardly turned rim and with said Bulb positioned in said outer sleeve with said second lead bent 180* and positioned between said bulb and outer sleeve, with the second lead end overlying and welded directly to said rim; and a solid potting material positioned between said bulb and spring about said leads and filling said closed turn mechanically supporting said spring and leads and electrically insulating said leads from each other; with said conductor in said housing sliding in said zone with said spring free end in said cup and urging said pn into said housing.
Claim 3
Independent Claim
127 words
A method of making a spring loaded lamp having a bulb fixed in a housing with a moving conductor pin for contacting a socket, including the steps of: molding an inner insulating sleeve in place in an outer metal sleeve to form a housing; welding one end of a spring directly to a first bulb lead; encapsulating the space between the bulb and a closed turn of the spring with a potting material; positioning the bulb and spring and a conductor pin in said housing, with a second bulb lead bent 180* between the bulb and housing and exposed at the bulb end of the outer sleeve of the housing; cementing the bulb in the housing outer sleeve; and welding the exposed second lead to the sleeve.
Claim 4
Independent Claim
127 words
A method of making a spring loaded lamp having a bulb fixed in a housing with a moving conductor pin for contacting a socket, including the steps of: molding an inner insulating sleeve in place in an outer metal sleeve to form a housing; welding one end of a spring directly to a first bulb lead; encapsulating the space between the bulb and a closed turn of the spring with a potting material; positioning the bulb and spring and a conductor pin in said housing, with a second bulb lead bent 180* between the bulb and housing and exposed at the bulb end of the outer sleeve of the housing; cementing the bulb in the housing outer sleeve; and welding the exposed second lead to the sleeve.
References Cited (Backward Citations)
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US2842700A
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US2984810A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |