Crane swing warning system

• US 6,102,373 A
• Filed: 02/05/1998
• Issued: 08/15/2000
• Est. Priority Date: 02/05/1998
• Status: Expired due to Term

• Current Assignee: Gary James Amsinger
• Original Assignee: Gary James Amsinger
• Inventors: Amsinger, Gary James
• Primary Examiner(s): Browne, Lynne H.
• Assistant Examiner(s): Cottingham, John R.
• Application Number:
  US09/019,415
• Time in Patent Office: 922 Days
• Field of Search: 256/1, 256/DIG. 6, 256/40, 256/42, 256/23, 212/280, 212/276, 248/345.1, 248/206.5, 403/378, 403/379.1, 403/379.2, 403/379.3, 403/379.4, 403/379.5
• US Class Current: 256/1
• CPC Class Codes: B66C 23/94 for limiting slewing movements

Abstract

Crane swing warning system is disclosed for a crane that has an undercarriage, which is independent from its cab body, connected by a turntable that the upper crane body rotates about on a vertical axis. The crane swing warning system consists of a continuous plastic caution tape extended out and around the upper crane body by supports adjustable in 360 degrees, and in length, fully retractable or completely removed. This crane swing warning system is to warn individuals of the movement of the upper crane body as to prevent the individuals from being struck by or being caught between the rotating upper crane body and the crane undercarriage.

Claims

1. In a crane which has an undercarriage which is stationary as it relates to an upper body that rotates around a substantially vertical axis in order to move certain objects from one location to another vertically and/or horizontally, the improvement is as follows:

caution tape, support means for suspending the caution tape completely surrounding the rotating superstructure of the upper crane body with spatial relation extending past the undercarriage wherein the support means comprises an arm with a magnetic base capable of support the arm when attached to the crane.

2. The improvement defined in claim 1 wherein support means for the caution tape further comprises the arm being retractable and consisting of a projection leg connected by a locking angle bracket to the tubular magnetic base and an extendible section, and, a pliable ring that retains and supports the continuous length of caution tape suspended around a crane swing radius from one support to the other.