Aircraft towbar

• US 6,543,790 B2
• Filed: 06/11/2001
• Issued: 04/08/2003
• Est. Priority Date: 06/11/2001
• Status: Expired due to Fees

• Current Assignee: Raymond W. Johnson
• Original Assignee: Raymond W. Johnson
• Inventors: Johnson, Raymond W.
• Primary Examiner(s): Boehler, Anne Marie
• Application Number:
  US09/877,447
• Publication Number:
  US 20020185839A1
• Time in Patent Office: 666 Days
• Field of Search: 280/493, 280/503, 280/DIG.11, 280/3, 180/904, 180/19.1, 180/20, 244/50
• US Class Current: 280/3
• CPC Class Codes: B60D 1/145 consisting of an elongated single bar or tube
• CPC Class Codes: B60D 1/155 comprising telescopic or foldable parts
• CPC Class Codes: B64F 1/224 Towing bars
• CPC Class Codes: Y10S 180/904 Traction dollies for aircraft

Abstract

A towbar for the towing of aircraft which will enable the user to attach the same to, selectively, the front nose wheel or the front wheel strut of an aircraft. The towbar includes a longitudinally extending towing bar with a vehicle attachment on one end thereof to facilitate attachment to a towing vehicle with the other end thereof provided with a pair of arms to engage the nose wheel or strut. The arms are openable and closeable for attachment to the wheel or strut and the mechanics for opening and closing are arranged within the longitudinal towing bar. The mechanism for opening and closing includes a slide moveable on the bar in a longitudinal direction and a structure for converting this longitudinal motion to rotational motion for rotating an arm control rod which, through a threaded end and threaded bearing will move one arm with respect to the other.

Claims

1. An aircraft towing device arranged and constructed to connect to the nose wheel of or to engage the nose wheel strut of an aircraft including:

(a) a longitudinally extending towing bar;

(b) a cross arm disposed at one end of said towing bar, said cross arm supporting a pair of arms at outward ends thereof where one of said pair of arms is rotatably mounted to one of said outward ends of said cross arm;

(c) one of said pair of arms being shiftable with respect to the other such arm to increase and decrease the spacing between ends of said arms, whereby the nose wheel or wheel strut of an aircraft may be secured between said pair of arms;

(d) a rotatable rod member having a threaded end received into the shiftable one of the pair of arms;

(e) a longitudinally shiftable slide member arranged on said towing bar; and

(f) a cable coupled between the slide member and the rotatable rod member whereby longitudinal shifting of the slide member is converted to rotation of the rotatable rod member.

2. The aircraft towing device as set forth in claim 1 and said cable including an endless flexible connector between said slide member and said rotatable rod member whereby longitudinal movement of said slide member is converted to rotation of said rotatable rod member.

3. The aircraft towing device as set forth in claim 2 and said flexible connector includes an idler device for maintaining tension of said flexible connector.

4. The aircraft towing device as set forth in claim 1 and said shiftable slide member being mounted on said towing bar, said towing bar being tubular and said cable being housed therein.

5. The aircraft towing device as set forth in claim 1 and means for contacting and engaging the nose wheel or nose wheel strut of the aircraft arranged on the endmost portions of said pair of arms.