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US3803402A Expired / Lapsed US ⏱️ 0.0 years remaining

Lens structure for a combination signal lamp

Assignee: Ichikoh Industries Ltd
•
Filing: 1973-01-15
•
Granted: 1974-04-09
•
Expires: 1993-01-15
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Abstract

Abstract A lens structure for a combination signal lamp for automobiles is comprised of at least two lens pieces connected to each other. Each of the lens pieces has a side wall at which they can be connected together. The side wall of one of the two lens pieces is provided with spaced, exposed vertical dovetail grooves each having a closed top and an open bottom and this side wall also has a notch which runs horizontally at the bottom thereof and includes the open lower end portions of the grooves. The side wall of the other lens piece is provided with spaced dovetail projections which fit in said dovetail grooves and with an elongated horizontal flange which fits in said notch. This lens structure is made by placing the dovetail grooves and the dovetail projections together and also by putting the flange in place in the notch, and then by welding together the abutting walls of the flange and the notch integrally relying on known welding techniques utilizing, for example, supersonic waves.

Inventors

  • 👤 A Nasu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 09:59
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; F; F21; F21S; F21S43/00; F21S43/50; F21S43/51

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 170 words
A lens structure for a combination signal lamp, comprising at least two lens pieces each having a side wall to be joined together, each side wall having upper and lower edges and vertical side edges, the side wall of one of said two lens pieces having at least one exposed, vertical dovetail groove having first and second ends, said first end being opened and a horizontal notch joining said open first end, the side wall of the other one of said two lens pieces having at least one vertical dovetail projection, having first and second end surfaces, located at a site corresponding to that of said groove and provided with a configuration complementary to that of said groove, this latter side wall further having a horizontal flange extending from said first surface and being of a configuration complementary to that of said notch, said dovetail projection being received in said dovetail groove, said flange being received in said notch, and said flange and walls of said notch being fusion-welded together.
Claim 2
Dependent Claim 170 words
A lens structure for a combination signal lamp, comprising at least two lens pieces each having a side wall to be joined together, each side wall having upper and lower edges and vertical side edges, the side wall of one of said two lens pieces having at least one exposed, vertical dovetail groove having first and second ends, said first end being opened and a horizontal notch joining said open first end, the side wall of the other one of said two lens pieces having at least one vertical dovetail projection, having first and second end surfaces, located at a site corresponding to that of said groove and provided with a configuration complementary to that of said groove, this latter side wall further having a horizontal flange extending from said first surface and being of a configuration complementary to that of said notch, said dovetail projection being received in said dovetail groove, said flange being received in said notch, and said flange and walls of said notch being fusion-welded together.
Claim 3
Dependent Claim 69 words
A lens structure for a combination signal lamp according to claim 1, in which the side wall of one of the two lens pieces has two of said dovetail grooves in parallel relation with each other and the side wall of the other of the two lens pieces has two of said dovetail projections in parallel relation with each other at sites corresponding to those of said dovetail grooves.
Claim 4
Dependent Claim 29 words
A lens structure for a combination signal lamp according to claim 1, in which said flange and walls of said notch are fusion-welded together by a supersonic welding technique.
Claim 5
Dependent Claim 36 words
A lens structure for a combination signal lamp according to claim 1, in which the outer surface of said side wall of either one of said two lens pieces is coated with a light-shielding opaque material.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-04-08 1977-10-08 1978-04-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-04-08 1981-10-08 1982-04-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-04-08 1985-10-08 1986-04-09 $7700.00 Window Closed / Lapsed

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