Harken, Incorporated

Jonathan D Malcolm

Kenneth Edward Lange

A high load descender for rope access and rescue has a ratcheting sheave mounted to a pivoting arm, which translate with rope tension against a fixed shoe. The ratcheting sheave has a groove that grips rope during descent while allowing free rotation for ascent and progress capture. An adaptive release linkage enhances ease of operation and control while maintaining convenient handle position in a variety of conditions.

High load descender with adaptive release linkage

A traveler comprises a car slideably held on a track, and is useful for applications including trimming a sailboat mast or sail. The car has two side portions each with a race with an open portion. Ball bearings are contained in each race that are rotatably engaged between the race open portions and the grooves on the sidewalls of the track. The car further has retaining means for holding the ball bearings in place along the open portion of the race when the car is removed from the track. The retaining means are movably received by the track groove, and otherwise allow for free rotational engagement of the groove by the bearings.

Growing community of inventors

Wales, WI, United States of America

Jonathan D Malcolm