Patent US3775728A successfully refreshed from Google Patents.
US3775728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp holder
Assignee: TDK Micronas GmbH
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Filing: 1972-07-19
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Granted: 1973-11-27
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Expires: 1992-07-19
Abstract
Abstract A lamp holder having a molded body of plastic material formed with an axial blind cavity having a shaped profile and arranged to be connected to the profile of the glass base of a lamp. The bottom of the holder has two electric contacts snap fixed and provided with deformable sheaths arranged to engage two insulated wires. The contacts also engage the base of the lamp holder and permit the electrical connection with the insulated wires of the same base.
Inventors
- 👤 S Pitacco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
B; B60; B60Q; B60Q3/00; B60Q3/10; B60Q3/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
505 words
A lamp holder for lamp having a rectangular glass base including a pair of first projections on one major surface of said base, a second projection intermediate said pair of first projections on the other major surface of said base and a pair of filament wires for said lamp extending from said base on said one maJor surface of said base between and spaced from said pair of first projections, each of said pair of filament wires being associated with an associated one of said pair of first projections, said pair of first projections each having a notch disposed therein, said holder comprising: an annular body of molded material having an inner rectangular cavity disposed symmetrically about a longitudinal axis of said body to receive said base of said lamp, said inner cavity having a bottom wall in a transverse relation to said axis, a pair of first recesses in one major wall of said inner cavity parallel to said axis, each of said pair of recesses receiving an associated one of said pair of first projections and an associated one of said pair of filament wires, a second recess in the other major wall of said inner cavity parallel to said axis to receive said second projections and two openings through said bottom wall parallel to said axis in registry with said pair of first recesses; and two electrical contacts each disposed in a different one of said openings extending through said bottom wall, each of said two contacts having a deformable portion remote from said inner cavity to engage an associated one of two electrical insulated cables, one of said two contacts having a first spring tooth to engage a transverse surface of said bottom wall opposite said inner cavity adjacent an associated one of said openings and a first inwardly extending portion to engage a transverse surface of said bottom wall in said inner cavity, said first inwardly extending portion and said first spring tooth cooperating to hold said one of said two contacts in said body, the other of said two contacts having a first outwardly extending portion to engage a transverse surface of said bottom wall in said inner cavity and a second spring tooth to engage an outward step in an associated one of said pair of first recesses, said first outwardly extending portion and said second spring tooth cooperating to hold said other of said two contacts in said body, and each of said two contacts having a first portion extending parallel to said axis in an associated one of said pair of first recesses, said first portion having a shaped end portion to engage an associated one of said notches when said base of said lamp is received in said inner cavity and a second portion extending parallel to said axis and said first portion in an associated one of said pair of first recesses, said second portion having a shaped end portion to make electrical contact with an associated one of said pair of filament wires.
Claim 2
Dependent Claim
505 words
A lamp holder for lamp having a rectangular glass base including a pair of first projections on one major surface of said base, a second projection intermediate said pair of first projections on the other major surface of said base and a pair of filament wires for said lamp extending from said base on said one maJor surface of said base between and spaced from said pair of first projections, each of said pair of filament wires being associated with an associated one of said pair of first projections, said pair of first projections each having a notch disposed therein, said holder comprising: an annular body of molded material having an inner rectangular cavity disposed symmetrically about a longitudinal axis of said body to receive said base of said lamp, said inner cavity having a bottom wall in a transverse relation to said axis, a pair of first recesses in one major wall of said inner cavity parallel to said axis, each of said pair of recesses receiving an associated one of said pair of first projections and an associated one of said pair of filament wires, a second recess in the other major wall of said inner cavity parallel to said axis to receive said second projections and two openings through said bottom wall parallel to said axis in registry with said pair of first recesses; and two electrical contacts each disposed in a different one of said openings extending through said bottom wall, each of said two contacts having a deformable portion remote from said inner cavity to engage an associated one of two electrical insulated cables, one of said two contacts having a first spring tooth to engage a transverse surface of said bottom wall opposite said inner cavity adjacent an associated one of said openings and a first inwardly extending portion to engage a transverse surface of said bottom wall in said inner cavity, said first inwardly extending portion and said first spring tooth cooperating to hold said one of said two contacts in said body, the other of said two contacts having a first outwardly extending portion to engage a transverse surface of said bottom wall in said inner cavity and a second spring tooth to engage an outward step in an associated one of said pair of first recesses, said first outwardly extending portion and said second spring tooth cooperating to hold said other of said two contacts in said body, and each of said two contacts having a first portion extending parallel to said axis in an associated one of said pair of first recesses, said first portion having a shaped end portion to engage an associated one of said notches when said base of said lamp is received in said inner cavity and a second portion extending parallel to said axis and said first portion in an associated one of said pair of first recesses, said second portion having a shaped end portion to make electrical contact with an associated one of said pair of filament wires.
Claim 3
Dependent Claim
168 words
A lamp holder according to claim 1, further including a third electrical contact to be substituted for said other of said two contacts, said third contact having a second inwardly extending portion engaging said transverse surface of said bottom wall in said inner cavity, a third portion at substantially right angles to said second inwardly extending portion engaging a major surface of an associated one of said pair of first recesses, said third portion having a third spring tooth to engage said outward step in an associated one of said pair of first recesses, said second inwardly extending portion and said third spring tooth cooperating to hold said third contact in said body and a fourth portion extending through a slot in the wall of said cavity transverse to said axis to a ground contact external of said holder, said fourth portion having a shaped part to engage an associated one of said notches and make electrical contact with an associated one of said pair of filament wires.
Claim 4
Dependent Claim
70 words
A lamp holder according to claim 2, further including an annular rib formed integral with the outer surface of said body, said annular rib having diametrically opposite cut outs; and a retaining spring tooth formed integral with the outer surface of said body adjacent each of said cut outs; said annular rib and each of said retaining spring teeth enabling said body to be snap mounted to a fixed support.
Claim 5
Dependent Claim
14 words
A lamp hOlder according to claim 2, wherein said molded material is a plastic.
Claim 6
Dependent Claim
70 words
A lamp holder according to claim 1, further including an annular rib formed integral with the outer surface of said body, said annular rib having diametrically opposite cut outs; and a retaining spring tooth formed integral with the outer surface of said body adjacent each of said cut outs; said annular rib and each of said retaining spring teeth enabling said body to be snap mounted to a fixed support.
Claim 7
Dependent Claim
14 words
A lamp holder according to claim 5, wherein said molded material is a plastic.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |