US4682274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive headlight
Assignee: Hella GmbH and Co KGaA
•
Filing: 1986-09-03
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Granted: 1987-07-21
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Expires: 2006-09-03
Abstract
Abstract An automotive headlight with a bowl-shaped plastic reflector. The reflector has at its apex an opening surrounded at the rear of the reflector by a sheet-metal retaining ring. The ring accommodates an incandescent lamp. The lamp is inserted into openings in the reflector with its securing tabs bent back toward the reflector and is secured to the reflector by barbs on the securing tabs that engage the edges of the holes. To improve the headlight to the extent that the openings in the reflector that accommodate the securing tabs are large enough not to shorten the life of the tool and do not need to be produced with such a precise tolerance, while still ensuring that the retaining ring will fit the reflector reliably and snugly, the securing tabs are bent into a U and the openings in the reflector that accommodate the tabs are quadrilateral and approximately as high and as wide as the tabs.
Inventors
- 👤 Erwin Freudenreich
- 👤 Horst Flerlage
- 👤 Karlernst Sewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/10; F21S41/19; F21S41/198
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
An automotive headlight comprising: a bow-shaped plastic reflector having an apex and an opening at said apex; a sheet metal retaining ring surrounding said opening at the rear of the reflector; an incandescent lamp held by said retaining ring and inserted into said opening at said apex; securing tabs on said retaining ring, said securing tabs being bent back toward said reflector; barbs on said securing tabs for securing said retaining ring to said reflector; opening forming means on said reflector at said apex and surrounding said opening at said apex, said opening forming means forming a plurality of openings having a quadrilateral shape and being substantially as deep and wide as said tabs; said barbs engaging edges of said openings; said securing tabs being bent into a U-shape; said openings in said reflector receiving said tabs.
Claim 2
Dependent Claim
137 words
An automotive headlight comprising: a bow-shaped plastic reflector having an apex and an opening at said apex; a sheet metal retaining ring surrounding said opening at the rear of the reflector; an incandescent lamp held by said retaining ring and inserted into said opening at said apex; securing tabs on said retaining ring, said securing tabs being bent back toward said reflector; barbs on said securing tabs for securing said retaining ring to said reflector; opening forming means on said reflector at said apex and surrounding said opening at said apex, said opening forming means forming a plurality of openings having a quadrilateral shape and being substantially as deep and wide as said tabs; said barbs engaging edges of said openings; said securing tabs being bent into a U-shape; said openings in said reflector receiving said tabs.
Claim 3
Dependent Claim
25 words
An automotive headlight as defined in claim 1, wherein said U-shaped securing tabs are bent along lines parallel to insertion direction of said retaining ring.
Claim 4
Dependent Claim
28 words
An automotive headlight as defined in claim 1, wherein said U-shaped securing tabs are bent along lines located at an angle to insertion direction of said retaining ring.
Claim 5
Dependent Claim
47 words
An automotive headlight as defined in claim 3, wherein a barb comprises at least one tongue cut free from legs of the U-shape of said securing tabs, said tongue being bent towards sides of said openings in a direction opposite to insertion direction of said retaining ring.
Claim 6
Dependent Claim
45 words
An automotive healight as defined in claim 1, wherein said barbs comprise at least one tongue cut free from the U-shape of said securing tabs, said tongue being bent towards sides of said openings in a direction opposite to insertion direction of said retaining ring.
Claim 7
Dependent Claim
37 words
An automotive headlight as defined in claim 1 wherein at least one barb extends in a direction opposite to insertion direction of said retaining ring, said on barb being cut free from faces of said securing tabs.
Claim 8
Dependent Claim
41 words
An automotive headlight as defined in claim 1 wherein at least one barb extends in a direction opposite to insertion direction of said retaining ring, said one barb being cut free from lateral edges of legs of said U-shaped securing tabs.
Claim 9
Dependent Claim
18 words
An automoive headlight as defined in claim 1, wherein said barbs taper conically down to a free end.
Claim 10
Dependent Claim
27 words
An automotive headlight as defined in claim 1, wherein said securing tabs have a free end extending toward said reflector; and mounting bevels on said free end.
Claim 11
Dependent Claim
19 words
An automotive headlight as defined in claim 1 wherein said securing tabs are distributed irregularly around said retaining ring.
Claim 12
Dependent Claim
40 words
An automotivve headlight as defined in claim 1 including a flange on said lamp; spring-loaded arms pressing against said flange, said arms being cut free from an inner edge of said retaining ring between said reflector and said retaining ring.
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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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |