Patent US4714858A successfully refreshed from Google Patents.
US4714858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capped electric lamp comprising a metal sleeve having a corner depression to engage an associated recess in an insulator body
Assignee: US Philips Corp
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Filing: 1987-03-05
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Granted: 1987-12-22
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Expires: 2007-03-05
Abstract
Abstract In certain electric lamps, the lamp cap has a rectangular metal sleeve (10), which is fixed around the pinch (3) of the lamp vessel (1). The sleeve (10) also surrounds an insulator body (12), which immovably encloses a contact member (13). The contact member (13) is secured to a current supply conductor (4) of the lamp. In the lamp according to the invention, the insulator body (12) is immovably held in the sleeve (10) by depressions (16) in the corners (14) of said sleeve, which engage a respective recess in the insulator body (12).
Inventors
- 👤 Rudolf Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:57
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially rectangular cross-section, said pinch of said lamp vessel being firmly fixed therein, said sleeve having a plurality of corners formed by intersections of respective planes of the sleeve; (d) an insulator body having a substantially rectangular cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulator body and said metal sleeve; the improvement therein comprising said insulator body being immovably held in said metal sleeve by at least one depression in at least one corner of said metal sleeve, said depression engaging a recess of said insulator body, and said depression being mainly a plastic deformation.
Claim 2
Dependent Claim
195 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially rectangular cross-section, said pinch of said lamp vessel being firmly fixed therein, said sleeve having a plurality of corners formed by intersections of respective planes of the sleeve; (d) an insulator body having a substantially rectangular cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulator body and said metal sleeve; the improvement therein comprising said insulator body being immovably held in said metal sleeve by at least one depression in at least one corner of said metal sleeve, said depression engaging a recess of said insulator body, and said depression being mainly a plastic deformation.
Claim 3
Dependent Claim
36 words
A capped electric lamp as claimed in claim 1, wherein a plurality of corners of said metal sleeve each have at least one said depression respectively, each depression engaging an associated recess of said insulator body.
Claim 4
Dependent Claim
34 words
A capped electric lamp as claimed in claim 1, wherein at least one corner of said metal sleeve has a plurality of said depressions, each depression engaging an associated recess in said insulator body.
Claim 5
Dependent Claim
225 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially polygonal cross-section, said pinch of said lamp vessel being firmly fixed therein, said sleeve having a plurality of corners formed by intersections of respective planes of the sleeve; (d) an insulator body having a substantially polygonal cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulator body and said metal sleeve; the improvement therein in which a plurality of said corners have at least one respective depression formed in said sleeve; said insulator body has a plurality of recesses formed therein, said recesses being located at least at respective corners of said body, and said body is immovably held in said metal sleeve by engagement of each of said depressions in an associated recess of said insulator body, each said depression being mainly a plastic deformation.
Claim 6
Dependent Claim
225 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially polygonal cross-section, said pinch of said lamp vessel being firmly fixed therein, said sleeve having a plurality of corners formed by intersections of respective planes of the sleeve; (d) an insulator body having a substantially polygonal cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulator body and said metal sleeve; the improvement therein in which a plurality of said corners have at least one respective depression formed in said sleeve; said insulator body has a plurality of recesses formed therein, said recesses being located at least at respective corners of said body, and said body is immovably held in said metal sleeve by engagement of each of said depressions in an associated recess of said insulator body, each said depression being mainly a plastic deformation.
Claim 7
Dependent Claim
222 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially rectangular cross-section, and four corners formed by intersections of respective planes of the sleeve, said pinch of said lamp vessel being firmly fixed in said sleeve; (d) an insulator body having a substantially rectangular cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulating body and said metal sleeve; the improvement therein in which each of said corners has at least one respective depression formed in said sleeve; said insulator body has a plurality of recesses formed therein, said recesses being located at least at respective corners of said body, and said body is immovably held in said metal sleeve by engagement of each of said depressions in an associated recess of said insulator body, each said depression being mainly a plastic deformation.
Claim 8
Dependent Claim
222 words
In a capped electric lamp comprising: (a) a lamp vessel sealed in a vacuum-tight manner having an electric element arranged therein and having a pinch; (b) a first and second current supply conductor, each conductor extending from the outside of said lamp vessel to said electric element, at least one conductor passing through said pinch; (c) a metal sleeve having a substantially rectangular cross-section, and four corners formed by intersections of respective planes of the sleeve, said pinch of said lamp vessel being firmly fixed in said sleeve; (d) an insulator body having a substantially rectangular cross-section, said insulator body enclosed in said metal sleeve; and (e) a contact member connected to said first current supply conductor, said contact member being immovably enclosed at least partially over its length by said insulator body and having one of its ends projecting from said insulating body and said metal sleeve; the improvement therein in which each of said corners has at least one respective depression formed in said sleeve; said insulator body has a plurality of recesses formed therein, said recesses being located at least at respective corners of said body, and said body is immovably held in said metal sleeve by engagement of each of said depressions in an associated recess of said insulator body, each said depression being mainly a plastic deformation.
Claim 9
Dependent Claim
20 words
A capped lamp as claimed in claim 5, wherein each of said corners of said metal sleeve comprises two depressions.
Claim 10
Dependent Claim
13 words
A capped lamp as claimed in claim 5, wherein said depressions are V-shaped.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |