Light sources

• US 3,272,977 A
• Filed: 04/17/1964
• Issued: 09/13/1966
• Est. Priority Date: 04/17/1964
• Status: Expired due to Term

• Current Assignee: John W. Holmes
• Original Assignee: John W. Holmes
• Inventors: Holmes, John W.
• Application Number:
  US04/360,637
• Time in Patent Office: 879 Days
• US Class Current: 362/223
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 19/0085 at least one conductive element acting as a support means, e.g. resilient contact blades, piston-like contact
• CPC Class Codes: F21V 21/002 making direct electrical contact, e.g. by piercing F21V21/35 takes precedence
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: F21W 2111/02 for roads, paths or the like
• CPC Class Codes: F21W 2111/027 for indicating kerbs, steps or stairs
• CPC Class Codes: F21W 2111/06 for aircraft runways or the like

Claims

2. A LIGHT SOURCE COMPRISING A HOLLOW WATERPROOF TUBE OF FLEXIBLE TRANSPARENT PLASTIC MATERIAL HOUSING A SERIES OF LAMPS SPACE APART AND SLIDABLE WITHIN AND ALONG THE LENGTH OF THE TUBE, THE SAID LAMPS BEING ELECTRICALLY CONNECTED TOGETHER BY CONDUCTORS EXTENDING INWARDLY FROM PART OF AN ELECTRICAL COUPLING POSITIONED AT EACH END OF THE TUBE AND MECHANICALLY CONNECTED TOGETHER BY AT LEAST ONE TENSION MEMBER, MEANS FOR KEEPING THE TENSION MEMBER IN TENSION, THE SAID MEANS FOR KEEPING THE TENSION MEMBER IN TENSION BEING IN THE FORM OF AN ANCHORAGE TO WHICH THE TENSION MEMBER IS CONNECTED AT ONE END OF THE TUBE AND A TENSION SPRING CONNECTED TO THE TENSION MEMBER AT THE OTHER END OF THE TUBE, THE SAID CONDUCTORS BEING A PAIR OF INSULATED CONDUCTORS WHICH EXTEND ALONG THE LENGTH OF THE TUBE AND ACT ALSO AS TENSION MEMBERS, EACH LAMP EXTENDING BETWEEN A PAIR OF LAMP CARRIER AND EACH CONDUCTOR BEING ELECTRICALLY ASSOCIATED WITH AND MECHANICALLY CONNECTED TO ONE CARRIER OF EACH PAIR, EACH PAIR OF CARRIERS INCLUDING SPRING CONTACTS WHICH TOGETHER EXERT AN AXIAL LOAD ON THE LAMP, AND THE REACTION FORCE EXERTED ON THE CARRIERS BEING TAKEN UP BY THE CONDUCTORS EXTENDING BETWEEN THEM.