Patent ID: 7416375
Filing Date: 2008-08-26
Classification: F16B

Abstract:
1. A coupling device comprising: a. a body; b. a plurality of coupling segments within the body, the coupling segments positioned about a central axis including a receiving channel adapted to receive an engageable member, the coupling segments configured to selectively expand the receiving channel between a first diameter and a second diameter, wherein the coupling segments are unattached to the body; c. a biasing member engaged to the coupling segments, the biasing member urging the coupling segments toward each other about the central axis; and d. an actuating member positioned between two coupling segments, wherein the actuating member is rotated within the body to expand the receiving channel between the first diameter and the second diameter, the actuating member including side faces having a first dimension and a second dimension, wherein the receiving channel is at the first diameter when the side faces of the actuating member having the first dimension are in contact with the two coupling segments and the receiving channel is at the second diameter when the side faces of the actuating member having a second dimension are in contact with the two coupling segments.