Cord grip

In a cord grip, interfitting parts defining a generally annular compression chamber with a cord receiving central passage therethrough, the parts being screw threaded together so that relative rotation varies the axial dimension and therefore the volume of the chamber, gripper elements in the front of the compression chamber constructed and arranged to perform a closing and gripping action on a cord in response to reduction in the volume of the compression chamber, and a sealing grommet in the rear of the compression chamber interfitting with the gripper elements such that at least a part of the closing action of the gripper elements distorts at least a part of the grommet into an out-of-round condition thus effecting a seal on the cord.

In a cord grip, a variable volume compression chamber with an axial cord receiving passage therethrough and defined by at least two interfitting parts which are screw threaded together so that rotation of one relative to the other reduces the axial dimension, and therefore the volume, of the chamber, a gripping and sealing unit in the chamber including two elements, a grommet in the rear and a set of grippers in the front, the grommet being generally annular and having a central passage for the cord, the set of grippers being disposed around the cord passage and including at least two independent gripper elements, each having a forwardly disposedd head and a rearwardly disposed shank integral therewith and joined thereto at a rearwardly facing shoulder positioned so that the shoulder engages the front of the grommet and the shank extends into the grommet, the forward outer surface of each of the gripper elements being beveled so that axial reduction of the volume of the compression chamber tends to tends to bias the heads of the gripper elements radially inwardly in a pivoting action so that the shanks tend to distort the grommet radially.

For use in a cord grip in which a variable volume compression chamber with an axial cord receiving passage therethrough is defined by at least two interfitting screw threaded parts which upon rotation of one relative to the other reduces the axial dimension, and therefore the volume, of the chamber, the improvement comprising a gripping and sealing unit for use in such a chamber including two elements, an annular grommet and grippers extending from the front thereof, the grommet having a central passage therethrough for the cord and the grippers being disposed so as to define a forward part of the cord passage and including at least two independent gripper elements, each having a forwardly disposed head and a rearwardly disposed shank integral therewith and socketed into the grommet so as to form a unit with the grommet.

In a cord grip, interfitting parts defining a generally annular compression chamber with a cord receiving central passage therethrough, the parts being screw threaded together so that relative rotation reduces the axial dimension and therefore the volume of the chamber, independent gripper elements in the front of the chamber constructed to perform a closing and gripping action on a cord in response to reduction in the volume of the chamber, a distortable generally annular grommet in the rear of the chamber, and an interfit between each of the gripper elements and the grommet such that in response to reduction of the chamber volume each of the gripper element pivots about a lateral center in the grommet.