US3859554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp with integral plastic base member
Assignee: Philips North America LLC
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Filing: 1968-05-13
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Granted: 1975-01-07
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Expires: 1988-05-13
Abstract
Abstract An electric lamp having a vitreous envelope with a sealed end portion is permanently and securely fastened to a hollow preformed plastic base member by providing a laterally extending shoulder near the end of the envelope seal and embedding only that portion of the seal that extends up to and includes the shoulder in the base member itself, or in a body of cement that is located at the bottom of the base cavity. The partial embedment of the sealed end of the envelope in the base member itself is achieved by introducing vibrations of sufficient intensity into a selected portion of the base member to soften the plastic and then forcing the sealed end of the envelope into the softened plastic so that the latter flows around and behind the seal shoulder.
Inventors
- 👤 Luigi M Preziosi
- 👤 Bernard R Fallon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/05; H01R33/06; H01R33/09; B; B60; B60Q; B60Q3/00; B60Q3/10; B60Q3/14; H01J; H01J9/00; H01J9/24; H01J9/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
242 words
An electric lamp comprising, in combination; a vitreous envelope that contains an energizable source of light and haS a sealed portion at one end that is terminated by a tip of solid fused vitreous material which has a laterally protruding shoulder that defines a transversely extending recess in the sealed end portion of said envelope, a plastic base member having (a) a cavity that is larger than the sealed end portion of said envelope and (b) a pair of channels that are spaced from and communicate with said cavity, said envelope and base member being disposed in operative relationship with one another with the sealed end portion of the envelope extending into the base cavity, a pair of lead-in conductors extending through the sealed end portion of said envelope and into the respective channels in said base member, and contactor means anchored in the respective channels of said base member and electrically connected to the portions of said leadin conductors that are disposed in said channels, only the tip and adjacent recessed segment of the sealed end portion of said envelope being embedded in the interior part of the base member that defines the bottom of said cavity so that the resulting keyed interlocking juncture with the recess and shoulder of said envelope tip permanently joins the base member to said envelope, the remainder of the sealed end portion of said envelope being surrounded by but not embedded in said base member.
Claim 2
Dependent Claim
242 words
An electric lamp comprising, in combination; a vitreous envelope that contains an energizable source of light and haS a sealed portion at one end that is terminated by a tip of solid fused vitreous material which has a laterally protruding shoulder that defines a transversely extending recess in the sealed end portion of said envelope, a plastic base member having (a) a cavity that is larger than the sealed end portion of said envelope and (b) a pair of channels that are spaced from and communicate with said cavity, said envelope and base member being disposed in operative relationship with one another with the sealed end portion of the envelope extending into the base cavity, a pair of lead-in conductors extending through the sealed end portion of said envelope and into the respective channels in said base member, and contactor means anchored in the respective channels of said base member and electrically connected to the portions of said leadin conductors that are disposed in said channels, only the tip and adjacent recessed segment of the sealed end portion of said envelope being embedded in the interior part of the base member that defines the bottom of said cavity so that the resulting keyed interlocking juncture with the recess and shoulder of said envelope tip permanently joins the base member to said envelope, the remainder of the sealed end portion of said envelope being surrounded by but not embedded in said base member.
Claim 3
Dependent Claim
52 words
The electric lamp of claim 1 wherein the interior part of said base member in which said envelope tip and adjacent recessed segment are embedded comprises a body of cured cement that is located at the bottom of and only partly fills the base cavity and is bonded to said base member.
Claim 4
Dependent Claim
34 words
The electric lamp of claim 1 wherein said base member is composed entirely of plastic and said envelope tip and adjacent recessed segment are thus embedded directly in the bottom of said base member.
Claim 5
Dependent Claim
72 words
The electric lamp of claim 1 wherein; said energizable light source comprises an incandescible filament that is connected to said lead-in conductors, the sealed end portion of said envelope comprises a butt seal that is terminated by an indented segment and a depending globular tip of solid fused vitreous material, and the interior part of said base member encapsulates only the globular tip and the adjacent indented segment of the butt seal.
Claim 6
Dependent Claim
69 words
The electric lamp of claim 1 wherein; said energizable light source comprises an incandescible filament that is connected to said lead-in conductors, the sealed end portion of said envelope comprises a press seal of solid vitreous material that is terminated by an indented segment and a depending globular tip, and the interior part of said base member encapsulates only the indented segment and globular tip of said press seal.
Claim 7
Dependent Claim
57 words
The electric lamp of claim 5 wherein; said press seal has a transverse groove in one of its pressed faces, and the interior part of said base member also encapsulates the portion of the press seal which defines said transverse groove, the remainder of said press seal being surrounded by but not embedded in said base member.
Claim 8
Dependent Claim
149 words
The electric lamp of claim 1 wherein; said energizable light source comprises an incandescible filament that is connected to said lead-in conductors, said envelope is composed of glass and the sealed end portion thereof comprises a butt seal that is terminated by an indented segment and a depending globular tip of solid fused glass, said base member is composed entirely of plastic and only said globular tip and an adjoining part of the indented segment of said butt seal are embedded in the bottom of said base member, said base member (a) is terminated at its outermost end by an axially-extending boss and at its opposite end by a collar that extends around the portion of said envelope adjacent the butt seal, and (b) has a laterally extending flange that is located at the juncture of said boss and collar, and said pair of channels extended into said boss.
Claim 9
Dependent Claim
116 words
The electRic incandescent lamp of claim 7 wherein; said collar is of generally cylindrical configuration and has a pair of integral resilient lugs in its outer surface that are diametrically opposite one another and adapted to engage and interlock in cam-like fashion with a keyed aperture in a printed circuit board or the like, and said contactor means comprises a pair of elongated metal members that are (a) anchored in the respective channels, (b) extend beyond the laterally extending face of said flange, and (c) serve as exposed contacts that are adapted to engage and connect with the conductor elements of said circuit board or similar component when the lamp is placed in interlocked relationship therewith.
Claim 10
Dependent Claim
72 words
The electric incandescent lamp of claim 7 wherein; said channels extend from the laterally disposed face of said flange into the side walls of said boss, and said contactor members comprise rivet-like elements the shank portions whereof are anchored in the respective channels in electrical engagement with the ends of the lead-in conductors and the enlarged head portions whereof are seated against and protrude beyond the laterally extending face of said flange.
Claim 11
Dependent Claim
71 words
The electric incandescent lamp of claim 7 wherein; said channels are aligned and merge with slot openings in said collar and recesses in said flange, and said contactor members comprise elongated sheet metal elements that are locked in the respective channels and have resilient arm portions that extend through and laterally beyond the slot openings in said collar and are aligned with but spaced from the recessed portions of said flange.
Claim 12
Dependent Claim
55 words
The electric incandescent lamp of claim 10 wherein each of said sheet metal contactor elements have a U-shaped portion that is located within the respective channels in sandwiched relationship with the end of the associated lead-in conductor and is compressively clamped in such position by the walls of the base member which define said channel.
Claim 13
Dependent Claim
101 words
The electric incandescent lamp of claim 10 wherein; the boss portion of said base member comprises a flat knob-like extension that is disposed in a common diametric plane along with said contactor elements, channels, slot openings in said collar, and recesses in said flange, said channels terminate within said knob-like extension, and each of said sheet metal contactor elements are seated against the ends of the respective channels and locked in pressured electrical contact with the associated end portions of the lead-in conductors by a resilient tongue that protrudes from the contactor element and engages the adjacent wall of said extension.
Claim 14
Dependent Claim
159 words
The electric incandescent lamp of claim 12 wherein; the end face of said knob-like extension has a pair of apertures therein that are of smaller dimension than and communicate with said channels, each of said contactor elements has (a) an enlarged rectangular body portion that is seated against the bottom of the respective channels and has a deformed portion that defines said protruding locking tongue and (b) an end segment of smaller dimension than said body portion that extends through the associated aperture and beyond the end of said extension, the end portions of the lead-in conductors also extend through said apertures and are electrically joined to the protruding end segments of said contactors, a plastic cap is joined to and covers the end of said extension, and said cap has a pair of spaced recesses in its inwardly disposed surface that are aligned with and protectively enclose the protruding joined ends of said lead-in conductors and contactor elements.
Claim 15
Dependent Claim
115 words
The electric incandescent lamp of claim 12 wherein; the end face of said knob-like extension has a pair of apertures therein that are of smaller dimension than and communicate with said channels, the end segments of said contactor elements and associated lead-in conductors protrude through said apertures and the exposed portions thereof arE electrically joined together, said extension has a slot that extends across the end face thereof along said diametrical plane, and said apertures and the protruding end segments of the respective metal contactor elements and lead-in conductors are recessed within said slot, and the portions of the respective contactor elements and lead-in conductors that are electrically joined together are recessed within said slot.
Claim 16
Dependent Claim
105 words
A rear loading panel lamp comprising: first and second electrical terminal means; a lamp including an envelope and first and second leads extending from said envelope; and a base member including: (a) a wall defining a chamber in which a portion of said envelope is secured; (b) first and second retaining means with which said first and second electrical terminal means, respectively, are slidingly engaged, said first and second leads being engaged between said first and second electrical terminal means and retaining means, respectively; and (c) locking means operative in cooperation with said electrical terminal means to secure said lamp assembly to a circuit board.
Claim 17
Dependent Claim
105 words
A rear loading panel lamp comprising: first and second electrical terminal means; a lamp including an envelope and first and second leads extending from said envelope; and a base member including: (a) a wall defining a chamber in which a portion of said envelope is secured; (b) first and second retaining means with which said first and second electrical terminal means, respectively, are slidingly engaged, said first and second leads being engaged between said first and second electrical terminal means and retaining means, respectively; and (c) locking means operative in cooperation with said electrical terminal means to secure said lamp assembly to a circuit board.
Claim 18
Dependent Claim
46 words
A lamp according to claim 15 wherein said locking means include means for engaging said circuit board to restrain said lamp assembly in predetermined position in which said first and second electrical terminal means are in contact with first and second conductors on said circuit board.
Claim 19
Dependent Claim
60 words
A lamp according to claim 15 wherein said retaining means of said base member are exterior to said chamber of said base member, and said first and second leads of said lamp envelope extends from said chamber and are frictionally engaged between said first and second electrical terminal means and one surface of said first and second retaining means, respectively.
Claim 20
Dependent Claim
58 words
A base for a rear-loading panel lamp comprising: a wall defining a chamber for receiving a portion of a lamp envelope; a plurality of retaining means external to said member, each being operative to secure an electrical terminal which is slidingly engageable with said retaining means; and locking means operative to secure said base to a circuit board.
Claim 21
Dependent Claim
58 words
A base for a rear-loading panel lamp comprising: a wall defining a chamber for receiving a portion of a lamp envelope; a plurality of retaining means external to said member, each being operative to secure an electrical terminal which is slidingly engageable with said retaining means; and locking means operative to secure said base to a circuit board.
Claim 22
Dependent Claim
18 words
A base acccording to claim 18 wherein said wall includes a lower external portion which is laterally elongated.
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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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |