US4870546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lighting device for household appliances such as ovens
Assignee: BSH Hausgeräte GmbH
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Filing: 1988-12-15
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Granted: 1989-09-26
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Expires: 2008-12-15
Abstract
Abstract A lighting device for household appliances such as ovens, includes an electric lamp socket formed of electrically insulating material preventing leakage currents. Contact parts are disposed in the socket. The socket has an access side with a plug-in opening formed therein into which a lamp with a glass bulb, a lamp base of insulating material and contact prongs protruding from the lamp base is to be plugged into contact with the contact parts in a given plug-in direction. An electrically conductive and protectively grounded protective element covers at least the access side of the lamp socket and extends to the vicinity of at least one of the glass bulb and the lamp base. The protective element and the contact parts are spaced apart by a distance being greater than the length of the contact prongs by a required margin of safety, as seen in the given plug-in direction.
Inventors
- 👤 Gunter Hammerl
- 👤 Kurt Lintner
- 👤 Josef Krautscheid
- 👤 Johann Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:10
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/05; H01R33/06; H01R33/09; F; F21; F21V; F21V19/00; F21V19/0005; F21V25/00; F24; F24C; F24C15/00; F24C15/008; F21W; F21W2131/00; F21W2131/30; F21W2131/307; H01R13/00; H01R13/44
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
Lighting device for household appliances such as ovens, comprising an electric lamp socket formed of electrically insulating material preventing leakage currents, contact parts disposed in said socket, said socket having an access side with a plug-in opening formed therein into which a lamp with a glass bulb, a lamp base of insulating material and contact prongs protruding from said lamp base is to be plugged into contact with said contact parts in a given plug-in direction, and an electrically conductive and protectively grounded protective element covering at least said access side of said lamp socket and extending to the vicinity of at least one of the glass bulb and the lamp base, said protective element and said contact parts being spaced apart by a distance being greater than the length of said contact prongs by a required margin of safety, as seen in said given plug-in direction.
Claim 2
Dependent Claim
147 words
Lighting device for household appliances such as ovens, comprising an electric lamp socket formed of electrically insulating material preventing leakage currents, contact parts disposed in said socket, said socket having an access side with a plug-in opening formed therein into which a lamp with a glass bulb, a lamp base of insulating material and contact prongs protruding from said lamp base is to be plugged into contact with said contact parts in a given plug-in direction, and an electrically conductive and protectively grounded protective element covering at least said access side of said lamp socket and extending to the vicinity of at least one of the glass bulb and the lamp base, said protective element and said contact parts being spaced apart by a distance being greater than the length of said contact prongs by a required margin of safety, as seen in said given plug-in direction.
Claim 3
Dependent Claim
48 words
Lighting device according to claim 1, wherein said electrically conductive and protectively grounded protective element is a flat bar disposed in front of said access side of said lamp socket, and said flat bar has a recess formed therein being larger than the cross section of the lamp.
Claim 4
Dependent Claim
56 words
Lighting device according to claim 1, wherein said electrically conductive and protectively grounded protective element has a flat bar disposed in front of said access side of said lamp socket, said flat bar has a recess formed therein being larger than the cross section of the lamp, and said protective element tubularly surrounds said lamp socket.
Claim 5
Dependent Claim
59 words
Lighting device according to claim 1, wherein said electrically conductive and protectively grounded protective element has a flat bar disposed in front of said access side of said lamp socket, said flat bar has a recess formed therein being larger than the cross section of the lamp, and said protective element has a tubular portion surrounding said lamp socket.
Claim 6
Dependent Claim
20 words
Lighting device according to claim 2, including struts extending past said lamp socket on which said protective element is disposed.
Claim 7
Dependent Claim
17 words
Lighting device according to claim 1, wherein said protective element is three-dimensionally spaced from said lamp socket.
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) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |