Release mechanism

US4813731A · kind A · utility

Inventor

• Michael J. Smith · Indianapolis, US

Key dates

• Filing date: Jun 23, 1987
• Grant date: Mar 21, 1989
• Expiry date: Jun 23, 2007

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B45/028
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An improved cable release mechanism for mounting on the deck of a tow boat, tug or other tow vessel or vehicle comprising a rigid frame connectable to said tow vessel having pivotally connected thereto a pelican hook swingable through at least 180.degree.. The tow strain exerted by the tow cable passes along a line on the plane along which the axis of rotation of the pelican hook lays. As a result, when the device is used for towing, there is no rotational bias exerted on said pelican hook. In one embodiment, means for securing and/or releasing the pelican hook are comprised of a generally triangular shaped release member means having an upper pin and a lower pin positioned on the upper and lower side of the free end of the pelican hook, respectively, wherein when said release member is pivoted toward the release position, the lower pin exerts an upward force on the pelican hook and the upper pin is allowed to clear the way for the pelican hook to swing to the open position thereby releasing the cable. The upward force of the lower pin on the lower surface of the front end of the pelican hook causes the tow strain to be exerted along a line which passes above the axis of rotation o…