Flexible fiber optic tying member for theftproof device

• US 4,574,192 A
• Filed: 09/19/1984
• Issued: 03/04/1986
• Est. Priority Date: 11/16/1981
• Status: Expired due to Term

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company), Kabushiki Kaisha Honda Rokku, Kokoku Control Cable Kabushiki Kaisha
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company), Kabushiki Kaisha Honda Rokku, Kokoku Control Cable Kabushiki Kaisha
• Inventors: Kosuge, Yutaka, Kitagawa, Tadao, Sato, Tomosaburo, Noda, Yoichiro
• Primary Examiner(s): Nelms, David C.
• Application Number:
  US06/652,216
• Time in Patent Office: 531 Days
• Field of Search: 250/227, 340/550, 340/555, 340/556, 350/96.21, 350/96.20, 350/96.23
• US Class Current: 250/227.14
• CPC Class Codes: B60R 25/1004 Alarm systems characterised by the type of sensor, e.g. current sensing means using door lock sensors B60R25/1001
• CPC Class Codes: B62H 5/003 using chains or cables chain or cable locks per se E05B67/003; with alarm E05B45/005
• CPC Class Codes: E05B 45/005 Chain-locks, cable-locks or padlocks with alarms
• CPC Class Codes: G02B 6/4469 Security aspects

Abstract

A flexible tying member for a theftproof device which is adapted to give warning in response to a change in a photo signal transmitted in an optical fiber extending through the flexible tying member. The flexible tying member has a first layer including the optical fiber and at least one electric wire connected to at least one optoelectric element, and a second layer including a reinforcing member. The flexible tying member has a coaxial structure having an inner layer formed by the above first layer, and an outer layer formed by the above second layer, or a parallel structure in which the above first and second layers longitudinally extend parallel with each other.

Claims

1. An elongate flexible tying member having an optical fiber longitudinally extending through said flexible tying member and a pair of optoelectric elements arranged at opposite ends of said optical fiber, one of said optoelectric elements being a light source and the other of said optoelectric elements being a light receptor, for use in a theftproof device including means responsive to a change in an electrical signal generated by one of said optoelectric elements, which corresponds to a change in a photo signal generated by the other of said optoelectric elements and transmitted in said optical fiber, for performing a warning function, said flexible tying member further comprising:

a flexible hollow tubular member having a hollow interior extending axially thereof;

a first layer including said optical fiber and at least one electric wire, said optical fiber and electric wire of said first layer being arranged substantially parallel with each other and longitudinally extending through the hollow interior of said flexible hollow tubular member, said electric wire being electrically connected to at least one of said optoelectric elements; and

a second layer including a reinforcing member, said reinforcing member of said second layer longitudinally extending through the hollow interior of said flexible hollow tubular member in parallel with said optical fiber and electric wire of said first layer, said reinforcing member of said second layer comprising a plurality of strands, each formed of a plurality of twisted steel wires.

2. The flexible tying member according to claim 1, wherein said reinforcing member is formed of an electrically conductive material, and electrically connected to one of said optoelectric elements to also serve as a second electric wire, said second electric wire being electrically connected to said one of said optoelectric elements.

3. An elongate flexible tying member having an optical fiber longitudinally extending through said flexible tying member and a pair of optoelectric elements arranged at opposite ends of said optical fiber, for use in a theftproof device including warning means responsive to a change in an electrical signal generated by one of said optoelectric elements, which corresponds to a change in a photo signal generated by the other of said optoelectric elements and transmitted in said optical fiber, for performing a warning function, one of said optoelectric elements comprising a light source and the other of said optoelectric elements comprising a light receptor, said flexible tying member further comprising:

a flexible hollow tubular member having a hollow interior extending axially thereof;

a loop formed at one end of said flexible hollow tubular member;

connection means at the other end of said flexible hollow tubular member for detachably connecting said other end to a warning means;

a first layer including said optical fiber and two electric wires arranged substantially parallel with each other, which longitudinally extend through the hollow interior of said flexible hollow tubular member from said connection means,

said electric wires being electrically connected to the one of said optoelectric elements at said one end of said flexible hollow tubular member adjacent said loop; and

a second layer including a reinforcing member, and reinforcing member of said second layer longitudinally extending through the hollow interior of said flexible hollow tubular member in parallel with said optical fiber and electric wires of said first layer, said reinforcing member of said second layer comprising a plurality of strands, each formed of a plurality of twisted steel wires.