Automatic power line disconnect apparatus

• US 5,645,439 A
• Filed: 01/16/1996
• Issued: 07/08/1997
• Est. Priority Date: 01/16/1996
• Status: Expired due to Term

• Current Assignee: Kussmaul Electronics LLC
• Original Assignee: Kussmaul Electronics Co., Inc. (Mission Critical Electronics LLC)
• Inventors: Kussmaul, Ernest A., Nugent, Thomas H. Jr.
• Primary Examiner(s): Pirlot, David L.
• Assistant Examiner(s): BIGGI, BRIAN JOSEPH
• Application Number:
  US08/585,841
• Time in Patent Office: 539 Days
• Field of Search: 439/152, 439/153, 439/155, 439/158, 439/159, 439/160, 439/923, 439/39
• US Class Current: 439/159
• CPC Class Codes: H01R 13/635 by mechanical pressure, e.g. spring force
• CPC Class Codes: Y10S 439/923 Separation or disconnection aid

Abstract

An apparatus includes a connector which, in use, is connected to a shore cable. The shore cable provides power to a vehicle. A connection in the apparatus to the vehicle'"'"'s starting circuit actuates an ejector mechanism when the vehicle'"'"'s engine is started. The ejector mechanism ejects the shore cable from the apparatus and a switch interrupts the current prior to the completion of the ejection action, thereby preventing arcing at the connector and assuring long contact life.

Claims

1. An automatic power line disconnect apparatus for disconnection of an external cable connected to said apparatus comprising:

a housing means;

electrical connector means mounted in said housing for connection of said external cable;

electrical sensor means for sensing increased current flow through said connector;

ejector means for ejection of said external cable responsive to said electrical sensor means sensing increased current flow through said connector with said ejector means comprising;

elongated ejector bracket means for ejection of said external cable from said connector, with said ejector bracket means having a first end and a second end with said first end pivotally mounted in said housing;

trigger means having a first end and a second end and an intermediate portion, with said intermediate portion pivotally mounted in said housing, with said first end of sid trigger means comprising detent means removably engaging said first end of said ejector bracket means, with said second end of said trigger means connected to said electrical sensor means, with said electrical sensor means capable of actuating said trigger means to disengage said detent means from said ejector bracket means to allow said ejector bracket means to eject said external cable from said connector means; and

spring means disposed in said housing and urging said ejector bracket means to eject said external cable when said ejector bracket means is disengaged from said trigger means.

2. An automatic power line disconnect apparatus according to claim 1, in which said spring means comprises a pair of tension springs.

3. An automatic power line disconnect apparatus according to claim 2, in which each of said tension springs has a first end connected to said ejector bracket means and a second end connected to said housing.

4. An automatic power line disconnect apparatus according to claim 1, further comprising adjustment screw means connecting said trigger means and said solenoid means.

5. An automatic power line disconnect apparatus according to claim 4, in which said adjustment screw means further comprises compression spring means.