Immobilization system for watercraft

• US 6,352,045 B1
• Filed: 09/25/2000
• Issued: 03/05/2002
• Est. Priority Date: 09/24/1999
• Status: Expired due to Term

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Takashima, Sumihiro
• Primary Examiner(s): Sotelo, Jesus D.
• Application Number:
  US09/670,004
• Time in Patent Office: 526 Days
• Field of Search: 440/1, 440/84, 440/85, 440/87, 114/55.5, 182/271, 182/272
• US Class Current: 114/55.5
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: B63B 2017/0009 Methods or devices specially adapted for preventing theft, or unauthorized use of vessels, or parts or accessories thereof, other than by using locks
• CPC Class Codes: B63B 34/10 Power-driven personal watercraft, e.g. water scooters water jet propulsion B63H11/00; jet steering B63H25/46; Accessories therefor
• CPC Class Codes: B63J 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: H01H 2300/026 Application dead man switch: power must be interrupted on release of operating member
• CPC Class Codes: H01H 27/00 Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings combined with plug-and-socket connectors H01R13/70; with current-carrying plug H01R31/08

Abstract

An immobilization system for watercraft includes a transponder mounted within a lanyard clip and a communication device mounted to be in the vicinity of the trasponder when the lanyard member is engaged with the kill switch assembly. The transponder emits a security code which is received by the communication device and is compared to a predetermined authorized security code. If the transponder does not include the correct security code, the engine will not start or will be killed.

Claims

1. An immobilization system for an engine of a watercraft, comprising a transponder including a security code, a communication device configured to receive a security code from the transponder without direct electrical connection between the transponder and the communication device, and an engine control device configured to prevent the operation of the engine if the security code received by the communication device does not match a predetermined authorized security code.

2. The immobilization system according to claim 1, wherein the transponder is mounted in a lanyard member such that no electrical contacts of the transponder are exposed to an outer surface of the lanyard member.

3. The immobilization system according to claim 1 additionally comprising an engine kill switch, the engine control device activating the engine kill switch if the communication device does not receive the predetermined security code from the transponder.

4. The immobilization system according to claim 1, wherein the engine control device is configured to prevent operation of a starter motor of the motor if the security code received by the communication device does not match a predetermined authorized security code.

5. The immobilization system according to claim 1, wherein the engine control device is configured to store a plurality of predetermined authorized security codes.

6. A lanyard assembly for a watercraft comprising a lanyard member having an outer surface and configured to engage a kill switch device disposed on a watercraft, a tether configured to connect the lanyard member to a user, and a transponder embedded in the lanyard member such that a plurality of electrical contacts of the transponder are not exposed on the outer surface of the lanyard member.

7. The lanyard assembly according to claim 6, additionally comprising a kill switch assembly configured to receive the lanyard member.

8. The lanyard assembly according to claim 6, additionally comprising a communication device configured to receive a signal from the transponder without direct electrical connection to the transponder.

9. The lanyard assembly according to claim 6 wherein the communication device comprises an antenna coil mounted within an engine kill switch assembly mounted to the watercraft.

10. An immobilization system for an engine of a watercraft, comprising a transponder including a security code, a communication device configured to receive a security code from the transponder without direct electrical connection between the transponder and the communication device, and engine control means for preventing the operation of the engine if the security code received by the communication device does not match a predetermined authorized security code.