Patents by Inventor Jonathan D. Malcolm

Jonathan D. Malcolm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11660475
    Abstract: 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.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: May 30, 2023
    Assignee: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Patent number: 11097136
    Abstract: 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.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: August 24, 2021
    Assignee: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Patent number: 10583315
    Abstract: 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.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: March 10, 2020
    Assignee: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Publication number: 20190224503
    Abstract: 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.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Applicant: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Publication number: 20190030376
    Abstract: 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.
    Type: Application
    Filed: October 1, 2018
    Publication date: January 31, 2019
    Applicant: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Patent number: 10092781
    Abstract: 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.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 9, 2018
    Assignee: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Publication number: 20170189725
    Abstract: 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.
    Type: Application
    Filed: March 20, 2017
    Publication date: July 6, 2017
    Applicant: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Publication number: 20160296771
    Abstract: 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.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Applicant: Harken, Incorporated
    Inventor: Jonathan D. Malcolm
  • Patent number: 6158373
    Abstract: 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.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: December 12, 2000
    Assignee: Harken, Inc.
    Inventors: Kenneth E. Lange, Jonathan D. Malcolm