US 2026/0138847 A1 · KNOT-TYING DEVICE

Abstract

A knot-tying device where lines are mounted in parallel across a longitudinally rotating assembly. Posts set in the assembly cause the lines to wrap around each other when the assembly is rotated. Within the rotating assembly there is there is a vertical spindle capable of independent rotation. Affixed to the vertical spindle and protruding between the lines is a plane object that, when the vertical spindle is rotated, facilitates completion of the knot by expanding the space between the lines for the insertion of the tag ends of the lines. The geometric shape of the plane object is such that rotation of the spindle to successive 90°and 180°positions will reverse the relative orientation of the lines, permitting the user to more easily form a blood knot even when the tag ends of the lines are inserted from the same side of the device.

Claims18

Dependent claims

1-9. (canceled)

A tool for tying a bend between two lines, comprising:

(a) a frame including opposed arms able to hold at least two line segments in a substantially parallel arrangement extending across those arms and generally parallel to the axis of the shaft;
(b) a shaft rotatably mounted between the arms about a first rotational axis, the shaft having an eccentric portion offset from that axis;
(c) a spindle mounted on the eccentric portion so that its longitudinal axis is substantially perpendicular to the shaft and positioned to extend substantially perpendicularly through both lines, the spindle being rotatable about its own longitudinal axis, wherein rotation of the shaft causes the spindle to orbit while passing through the lines and twist them together;
and
(d) a separating element on the spindle having a cam surface that, upon rotation of the spindle, urges the lines apart to create a gap sufficient for manual insertion of line ends without threading or precise alignment.

2 more elements

A tool for tying a bend between two lines, comprising:

(a) a frame including opposed arms able to hold at least two line segments in a substantially parallel arrangement extending across those arms and generally parallel to the axis of the shaft;
(b) a shaft rotatably mounted between the arms about a first rotational axis, the shaft having an eccentric portion offset from that axis;
(c) a pair of posts mounted on the eccentric portion of the shaft and oriented substantially perpendicular to the first rotational axis, the posts being spaced apart on opposite sides of the eccentric portion and extending through the region between the lines;
and
(d) the posts being so positioned that, when the shaft is rotated, their spacing and orientation maintain the lines substantially untwisted in the region between the posts and permit twisting only in regions outside the posts, thereby defining a lateral gap between the lines in the region between the posts (the size of which may be enlarged by the spindle-mounted separating element in dependent claims).

2 more elements

A tool for forming a knot to secure an object of attachment, comprising:

(a) a frame defining a region for receiving a line;
(b) a shaft rotatably mounted with respect to the frame about a first rotational axis, the shaft having an eccentric portion offset from that axis;
(c) a spindle mounted on the eccentric portion substantially perpendicular to the shaft and oriented substantially perpendicular to the first rotational axis, the spindle being rotatable about its own longitudinal axis;
(d) wherein, when a line is passed to an object of attachment to define a standing portion and a tag portion of the line, rotation of the shaft causes the spindle to orbit between the standing and tag portions and twist them together to form turns of a knot;
and
(e) a separating element mounted on or integral with the spindle and having a cam surface configured such that rotation of the spindle about its longitudinal axis urges the standing and tag portions laterally apart by more than an incidental displacement to form a gap extending substantially across a width of the element, the gap being large enough for manual insertion of the tag end without threading or precise alignment.

3 more elements

A tool for forming a loop knot in a line, comprising:

(a) a frame defining a region for receiving a line;
(b) a shaft rotatably mounted with respect to the frame about a first rotational axis, the shaft having an eccentric portion offset from that axis;
(c) a spindle mounted on the eccentric portion substantially perpendicular to the shaft and oriented substantially perpendicular to the first rotational axis, the spindle being rotatable about its own longitudinal axis;
(d) a single post mounted on the frame and oriented substantially perpendicular to the first rotational axis, the post being located between the spindle and the side of the frame from which the standing and tag portions of the line enter and extending through the region between those portions so as to confine the tensioned portions of the line to regions outside the post and maintain them substantially untwisted in the interval between the post and the spindle;
(e) wherein rotation of the shaft causes the spindle and post to orbit between the standing and tag portions of the line, thereby twisting the line around itself to form the loop;
and
(f) wherein rotation of the spindle about its longitudinal axis causes the separating element to cam the standing and tag portions laterally apart, creating a defined gap extending substantially across the element and large enough for manual insertion of the tag end without threading or precise alignment.

4 more elements

Dependencies are inferred from the claim text.

Knot-tying device

Life of this patent

Knot-tying device

Life of this patent

Abstract

Claims18