Movable, Friction Brake Element Applied By Centrifugal Force Patents (Class 182/234)
  • Patent number: 10953848
    Abstract: Variable behaviour control mechanism with a variety of motion characteristics, the mechanism comprising means to measure a plurality of motion characteristics and to activate systems when a threshold of the motion characteristics is reached. The mechanism described is, for example, a vehicle seat belt and the mechanism minimises or prevents unwanted activation of line extension or retraction of the seat belt. A first mechanism is described where activation occurs between at least one primary system and at least one secondary system when a combination of the sensed motion characteristics achieves a threshold. A second mechanism is described where activation occurs between at least one primary system and at least one secondary system when at least one sensed motion characteristic achieves a threshold, the threshold being modified based on at least one further motion characteristic. A method of use of the above mechanisms is also described.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 23, 2021
    Assignee: EDDY CURRENT LIMITED PARTNERSHIP
    Inventors: Andrew Karl Diehl, Peter Scott, Benjamin Woods, Lincoln Frost
  • Patent number: 10661103
    Abstract: A self-braking pulley is disclosed for controlling a rate of extraction of a tether wound upon the pulley. The pulley includes a spool for receiving a tether, the spool being arranged to rotate about an axle of the pulley as the tether is removed therefrom. The pulley further includes a braking assembly for applying a braking force to the spool and a drive assembly which is engagable with the spool via an engagement member. The engagement member is arranged to rotationally couple the spool with the drive assembly for driving the braking assembly, in dependence of a rate of rotation of the spool about the axle.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 26, 2020
    Assignee: SWISSLOGO AG
    Inventors: Stephen Griffiths, Dion Owen
  • Patent number: 10286232
    Abstract: A remote overhead anchor system for use at an elevated overhead position and adapted to be secured to a ring or similar anchor point includes a substantially U or C shaped hook with two ends, one of which is adapted to pass through the anchor point to secure the hook to the anchor point. A latch is pivotally connected adjacent the other end of the U and can move between a closed position wherein it engages the first end and an opened position wherein it is spaced therefrom and a spring biases the latch into the closed position. To prevent the latch from unintentionally opening, a lock mechanism is carried by the other end of the U shaped hook and engages the lever. A conically shaped receiver secured to the hook faces downwardly to receive the upper end of an elongated vertically extending pole.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: May 14, 2019
    Inventor: Meyer Ostrobrod
  • Patent number: 9016435
    Abstract: This disclosure describes embodiments of novel line dispensing devices and methods for dispensing and retracting a line of a line dispensing device.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: April 28, 2015
    Assignee: Eddy Current Limited Partnership
    Inventors: Christopher James Allington, Andrew Karl Diehl, Bruce John Robertson
  • Patent number: 8991556
    Abstract: A fall arrest block has a drum (40) on which a lifeline is wound and from which the line can be drawn off or drawn back on, as the work man moves towards and away from the block. One end of the lifeline is permanently secured to the drum, and the drum has sockets (50) for securing ends of more than one different type of lifeline. The block also has a brake (24) in the form of a sealed unit which can be removed and replaced with a fresh unit, when servicing of the brake is required.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: March 31, 2015
    Assignee: Checkmate Limited
    Inventors: Oliver Auston, Duncan Barrier
  • Publication number: 20150041253
    Abstract: A retractable lifeline assembly includes a housing having a first portion and a second portion separated by a plate portion having an aperture. The aperture places a first cavity of the first portion in fluid communication with a second cavity of the second portion. A shaft extends through the aperture into the first cavity and the second cavity, and a seal proximate the shaft and the plate portion seals the first cavity from the second cavity. The first portion contains a cable assembly and the second portion contains a brake assembly.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Inventor: Scott C. Casebolt
  • Patent number: 8931598
    Abstract: A mechanism for use in an elevator governor assembly including a ground configured to rotate about a ground axis, three or more circumferentially overlapping cams each pivotally attached to the ground at one of three or more ground pivot points radially spaced from the ground axis, and a plurality of links pivotally attaching the three or more cams to one another at a plurality of link pivot points. The circumferentially overlapping cams form a substantially contiguous circular ring about the ground axis. The interconnection of the ground, the cams, and the links form a generally circular mechanism.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: January 13, 2015
    Assignee: Otis Elevator Company
    Inventors: Jose Miguel Aguado, Luis Marti, Jose Luis Vergara
  • Publication number: 20140318896
    Abstract: The present invention relates to a descending device for repeated braked descent of a load from an elevated structure. The descending device comprises a housing attachable to the elevated structure; a descent shaft rotatably attached to the housing; a centrifugal brake comprising a fixed part connected to the housing and a rotatable part connected to the descent shaft; and a rope configured for attachment of the load at two different load attachment portions being separated by a descent length of the rope. The descent shaft is directly connected to the rotatable part of the centrifugal brake such that one revolution of the descent shaft translates to one revolution of the rotatable part of the centrifugal brake; and the winding angle is at least 360°.
    Type: Application
    Filed: December 20, 2012
    Publication date: October 30, 2014
    Inventors: Linus Larsson, Sebastian Roos, Ove Larsson
  • Patent number: 8851235
    Abstract: An eddy-current braking mechanism including a rotor, rotatable about a rotor axis; at least one electrically conductive member coupled to the rotor for rotation therewith; at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterized in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: October 7, 2014
    Assignee: Eddy Current Limited Partnership
    Inventors: Christopher James Allington, Andrew Karl Diehl, Bruce John Robertson
  • Patent number: 8813914
    Abstract: A centrifugal clutch having a rotor and a clutch component, with at least one centrifugal weight movable in the radial direction relative to the rotor. When the rotational speed of the rotor is below a predefined value, the centrifugal weight is arranged in a first position and at a distance from the clutch component so that the rotor can freely rotate relative to the clutch component and, when the rotational speed of the rotor is above the predefined value, the centrifugal weight executes a radial movement relative to the rotor under a centripetal force into a second position so that the centrifugal weight bears against a clutch wall of the clutch component and establishes a mechanical force fit between the rotor and the clutch component.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: August 26, 2014
    Assignee: Skylotec GmbH
    Inventor: Kai Rinklake
  • Patent number: 8800719
    Abstract: A fall arrest block 10 has a spindle on which a length of lifeline 14 is wound. In normal use, the lifeline (preferably webbing) retracts onto and extends from a drum housing 12, as the workman moves towards and away from a secure point to which the housing is attached. In the event of a fall, an inertia mechanism sensitive to acceleration of the spindle operates to lock a locking mechanism to hold the spindle against further rotation. An energy absorbing link 18 is built into the webbing, close to a hook 16 to which the workman is attached. The energy absorbing link 18 includes a section of lifeline that is stretchable, but non-elastic. The locking mechanism includes a toothed ratchet wheel that is engaged by a pawl in order to lock the spindle rotation. The toothed ratchet wheel is part of a unitary body with the spindle.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: August 12, 2014
    Assignee: Checkmate Limited
    Inventors: Oliver Auston, Duncan Barrier
  • Patent number: 8794392
    Abstract: In a rappelling device (10) for braking a load guided on a cable which can be fixed to the rappelling device (10), the cable (14) is friction-guided over a distance (22) and the cable (14) which runs through the rappelling device (10) is guided over a brakable shaft (24). The cable (14) is pressed onto the brakable shaft (24) by means of a pre-definable pressing force (29). The braking elements for the brakable shaft (24) can be kept small in weight and design because an additional braking of the cable (14) takes place over the friction-guided distance in the rappelling device (10).
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: August 5, 2014
    Assignee: Spidescape Products, Inc.
    Inventor: Ulrich Kowatsch
  • Patent number: 8789655
    Abstract: A safety apparatus (11) comprising a first housing (25) supporting a first spool (17) and a second spool (21) coaxially mounted and independently rotatable. The safety apparatus (11) also comprises a support line (29) extending from the first spool (17) to the second spool (21) via a second support assembly (27). The safety apparatus (11) also comprises a locking device (35) operably movable between a locked condition wherein the first spool (17) and second spool (21) are locked relative to each other and a released condition wherein the first spool (17) and second spool (21) may rotate independently. The locking device (11) is maintained in a locked condition, locking the first spool (17) relative to the second spool (21), when a load of predetermined value, such as the weight of a fallen operator, is exerted upon the support line (29).
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: July 29, 2014
    Inventor: Leigh Dowie
  • Patent number: 8757324
    Abstract: There is provided a height rescue apparatus (4) comprising a flexible load element (6) for attachment at end (6a) to a safety line (3). The other end is attached to a flexible elongate element (10) wound on a drum (8) which is part of a speed control means. A flexible harness element (7a) is attached to a bracket (11) and is connected to a harness (2) arrangement. The flexible load element (6) is releasably connected to the bracket (11) and is intended to take the fall loads associated with a user falling. After such a fall the load element is released to allow a controlled descent using the elongate element (10) and the speed control means.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: June 24, 2014
    Inventors: Julian Elwyn Renton, Peter Thomas Mence Nott
  • Patent number: 8567562
    Abstract: A braking system for a self-retracting lifeline assembly is provided. The braking system includes a housing, a ratchet cam and a clutch assembly. The housing includes sidewalls that form, at least in part, a cavity. The sidewalls of the housing terminate in a connecting surface that extends around the cavity. The sidewalls have a plurality of notches spaced along interior surfaces of the sidewalls. Each notch extends from the connecting surface a select distance in the interior surfaces of the sidewalls of the housing. The ratchet cam includes an inner edge that defines a central cam opening. The inner edge of the ratchet cam has a plurality of inward extending teeth. The ratchet cam further has an outer edge. The outer edge has a plurality of outward extending fingers. Each finger terminates in a finger tip. Each finger tip is received in an associated notch in the interior surface of the housing.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 29, 2013
    Assignee: B D Industries, LLC
    Inventors: Vincent G. Meillet, Joseph R. Kaiser
  • Patent number: 8567561
    Abstract: The invention presents devices for controlled descent from buildings. Such a device includes a housing having a primary spool about which a cord is wound, a payload coupler for attaching a harness assembly to the housing, and an unwind control assembly for controlling the rate of exit of the cord from the housing. An inventive device kit may include a convertible storage unit used to protectively store a device and which, upon deployment, may be used as a protective helmet. In using an inventive device, a user attaches the device to a fixture in a building, dons a harness and the converted helmet, attaches the device to the harness, and exits the building from a window or roof.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: October 29, 2013
    Assignee: Rescue Reel, LLC
    Inventors: Michael Strasser, Thomas King, Kevin R. Stone
  • Patent number: 8499890
    Abstract: A personal escape device which can be used by men, women, and children, including physically disabled persons, to descend in a controlled and secure manner from high structures such as office buildings, multistory homes, and the like. The device is designed for a relatively low-cost, small size which may be used by payloads of variable weights. The rescue device of the invention may be a single-use device or a multi-use device.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: August 6, 2013
    Assignee: Rescue Reel, LLC
    Inventors: Kevin R. Stone, Michael Strasser, Thomas King, Imraan Aziz
  • Patent number: 8490751
    Abstract: This disclosure describes embodiments of novel line dispensing devices and methods for dispensing and retracting a line of a line dispensing device.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: July 23, 2013
    Assignee: Holmes Solutions Limited
    Inventors: Christopher James Allington, Andrew Karl Diehl, Bruce John Robertson
  • Patent number: 8430206
    Abstract: Herein are disclosed fall-protection safety devices comprising a load-bearing housing comprised of a composite polymeric material, and also comprising a load-bearing anchorage plate connected to the load-bearing housing by at least one load-bearing connector.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: April 30, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen Griffiths, Kurt D. Dietrich
  • Patent number: 8430208
    Abstract: Herein is disclosed a centrifugally-operated apparatus that comprises at least a shaft with an axis of rotation and a pawl that is coaxially mounted on the shaft with at least a portion of the pawl being movable radially inwardly and outwardly from the shaft. The axis of rotation of the shaft passes through the pawl, at a location that is radially offset from the center of mass of the pawl. Rotation of the shaft and pawl above a predetermined speed can cause at least the movable portion of the pawl to be moved radially outward from the shaft, in which position an engaging end of the movable portion of the pawl may engage with a component such as a ratchet.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: April 30, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen Griffiths, Kurt D. Dietrich
  • Patent number: 8325053
    Abstract: Apparatus for monitoring compliance with the 100% tied off rule for climbers using personal fall protection equipment. The personal fall protection monitoring system includes a remote monitoring module that monitors multiple harness systems. Each harness system includes sensors that detect the engagement of the lanyard with anchorage points and the harness. The system also includes a harness module that monitors the sensors and indicates an alarm condition to the climber and to the remote monitoring module. The harness module includes a transmitter that communicates with the remote monitoring module. The remote monitoring module communicates with multiple harness systems to indicate and log the status of each harness system.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: December 4, 2012
    Assignee: JCJ Inc.
    Inventors: William N. Flynt, Shawn A. Remington, Jacob M. Martin, Timothy Vile
  • Publication number: 20120298451
    Abstract: Herein is disclosed a centrifugally-operated apparatus that comprises at least a shaft with an axis of rotation and a pawl that is coaxially mounted on the shaft with at least a portion of the pawl being movable radially inwardly and outwardly from the shaft. The axis of rotation of the shaft passes through the pawl, at a location that is radially offset from the center of mass of the pawl. Rotation of the shaft and pawl above a predetermined speed can cause at least the movable portion of the pawl to be moved radially outward from the shaft, in which position an engaging end of the movable portion of the pawl may engage with a component such as a ratchet.
    Type: Application
    Filed: August 3, 2012
    Publication date: November 29, 2012
    Inventors: Stephen Griffiths, Kurt D. Dietrich
  • Patent number: 8256574
    Abstract: Herein is disclosed a centrifugally-operated apparatus that comprises at least a shaft with an axis of rotation and a pawl that is coaxially mounted on the shaft with at least a portion of the pawl being movable radially inwardly and outwardly from the shaft. The axis of rotation of the shaft passes through the pawl, at a location that is radially offset from the center of mass of the pawl. Rotation of the shaft and pawl above a predetermined speed can cause at least the movable portion of the pawl to be moved radially outward from the shaft, in which position an engaging end of the movable portion of the pawl may engage with a component such as a ratchet.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: September 4, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen Griffiths, Kurt D. Dietrich
  • Patent number: 8245817
    Abstract: A self-rescue device includes a rope operatively connected to a lifeline connector. The lifeline connector is releasably operatively connected to a frame member of the self-rescue device, and should a fall occur, the user releases the lifeline connector from the frame member. A centrifugal braking mechanism controls the rate at which the rope is paid out, which controls the rate of the user's descent.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: August 21, 2012
    Assignee: D B Industries, Inc.
    Inventor: Scott C. Casebolt
  • Patent number: 8181744
    Abstract: A lifeline system includes a lifeline and a drum assembly around which the lifeline is coiled. The drum assembly is rotatable about a first axis in a first direction during extension of the lifeline and in a second direction, opposite of the first direction, during retraction of the lifeline. The lifeline system further includes a tensioning mechanism in operative connection with the drum assembly to impart a biasing force on the drum assembly to bias the drum assembly to rotate about the first axis in the second direction. The lifeline system further comprises a braking mechanism in operative connection with the drum assembly. The braking mechanism includes a catch that is rotatable relative to the drum assembly about a second axis that is not concentric with the first axis. The second axis is operatively connected to the first axis so that the second axis rotates about the first axis in the same direction as the drum assembly when the drum assembly is rotating about the first axis.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: May 22, 2012
    Assignee: Honeywell International Inc.
    Inventors: Thomas W. Parker, Ross Balquist
  • Patent number: 8167090
    Abstract: An apparatus is disclosed for safely lowering a user from a structure. The apparatus includes a frame; a spool including a cable rotatably mounted on the frame; a securing device attached to the cable and adapted to securely attached to the structure; a user support adapted to support the user and securely attached to the frame; and a pair of centrifugal hydraulic brake systems adapted to slow a rotation of the spool to cause the user support, spool and frame to descend at a safe rate for the user. In another embodiment, the apparatus includes a frame; a spool including a cable rotatably mounted on the frame; a securing device attached to the frame and adapted to securely attached to the structure; a user support adapted to support the user and attached to the cable; and a pair of centrifugal hydraulic brake systems adapted to slow a rotation of the spool to cause the user support to descend at a safe rate for the user.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: May 1, 2012
    Inventor: Ralph L. Michael
  • Publication number: 20120067670
    Abstract: A centrifugal clutch having a rotor, a clutch component, and at least one centrifugal weight movable relative to the rotor. When the rotational speed of the rotor is below a predefined value, the centrifugal weight is in a first position and at a distance from the clutch component so that the rotor can rotate freely relative to the clutch component and, when the rotational speed of the rotor is above a predefined value, the centrifugal weight executes a movement relative to the rotor under a centripetal force into a second position so that the centrifugal weight produces a mechanical force fit between the rotor and the clutch component. The centrifugal weight has first toothing and the clutch component a second toothing so that the first toothing, above the predefined rotational speed, engages into the second toothing, establishing a form-locking connection between the rotor and the clutch component.
    Type: Application
    Filed: March 30, 2010
    Publication date: March 22, 2012
    Applicant: SKYLOTEC GMBH
    Inventor: Kai Rinklake
  • Publication number: 20120048651
    Abstract: A centrifugal clutch having a rotor and a clutch component, with at least one centrifugal weight movable in the radial direction relative to the rotor. When the rotational speed of the rotor is below a predefined value, the centrifugal weight is arranged in a first position and at a distance from the clutch component so that the rotor can freely rotate relative to the clutch component and, when the rotational speed of the rotor is above the predefined value, the centrifugal weight executes a radial movement relative to the rotor under a centripetal force into a second position so that the centrifugal weight bears against a clutch wall of the clutch component and establishes a mechanical force fit between the rotor and the clutch component.
    Type: Application
    Filed: March 30, 2010
    Publication date: March 1, 2012
    Applicant: SKYLOTEC GMBH
    Inventor: Kai Rinklake
  • Publication number: 20110315483
    Abstract: Herein are disclosed fall-protection safety devices comprising a load-bearing housing comprised of a composite polymeric material, and also comprising a load-bearing anchorage plate connected to the load-bearing housing by at least one load-bearing connector.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 29, 2011
    Inventors: Stephen Griffiths, Kurt D. Dietrich
  • Publication number: 20110147125
    Abstract: A fall protection safety device including a braking mechanism comprises a first component, a second component configured and arranged to move relative to the first component, and at least one magnet operatively connected to one of the components and another of the components being at least partially made of a non-ferromagnetic and electrically conductive material. The at least one magnet and the non-ferromagnetic and electrically conductive material creating an electromagnetic field force when the second component moves at a rate greater than a predetermined rate relative to the first component.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 23, 2011
    Applicant: D B INDUSTRIES, INC.
    Inventor: John P. Blomberg
  • Patent number: 7946387
    Abstract: A self-retracting lifeline includes a common, central brake hub having teeth on opposing sides and a lifeline assembly on each side of the brake hub. The lifeline assemblies include centrifugal clutch assemblies with pawls. The pawls are configured and arranged to engage the teeth of the brake hub to stop the lifeline assemblies when there is a sudden acceleration or a high rate of speed at which the lifeline assemblies turn to pay-out lifeline which causes the pawls to pivot and engage the teeth. The self-retracting lifeline may be operatively connected to a safety harness with a connector interconnecting the bottom of the self-retracting lifeline and the straps of the safety harness proximate a dorsal pad assembly and straps interconnecting the housing of the self-retracting lifeline and the straps of the safety harness above the dorsal pad assembly. The lifelines of the self-retracting lifeline exit the housing proximate the top.
    Type: Grant
    Filed: January 2, 2007
    Date of Patent: May 24, 2011
    Assignee: D B Industries, Inc.
    Inventors: Travis P Betcher, Matthew J. Blackford
  • Publication number: 20110100755
    Abstract: A braking system for a self-retracting lifeline assembly is provided. The braking system includes a housing, a ratchet cam and a clutch assembly. The housing includes sidewalls that form, at least in part, a cavity. The sidewalls of the housing terminate in a connecting surface that extends around the cavity. The sidewalls have a plurality of notches spaced along interior surfaces of the sidewalls. Each notch extends from the connecting surface a select distance in the interior surfaces of the sidewalls of the housing. The ratchet cam includes an inner edge that defines a central cam opening. The inner edge of the ratchet cam has a plurality of inward extending teeth. The ratchet cam further has an outer edge. The outer edge has a plurality of outward extending fingers. Each finger terminates in a finger tip. Each finger tip is received in an associated notch in the interior surface of the housing.
    Type: Application
    Filed: October 12, 2010
    Publication date: May 5, 2011
    Inventors: Vincent G. Meillet, Joseph R. Kaiser
  • Publication number: 20110067956
    Abstract: A personal, lightweight, high altitude rappel escape safety device is worn by an individual as a backpack and provides a safe means of lowering the individual from an elevated structure. The device comprises a structural body containing a mechanical device for slowly releasing a high strength cable. One end of the cable is secured to the structure prior to the user descending from the structure. The cable is released from a spool located inside the body and makes a circuitous path though a frictional structure. The structure contains baffles through which the cable extends. The friction caused by the pattern of release of the cable generates sufficient drag to safely lower a person from any altitude in a structure to the ground. The rate of descent may be adjusted via a braking mechanism.
    Type: Application
    Filed: November 22, 2006
    Publication date: March 24, 2011
    Inventor: Byung-Sun Hwang
  • Patent number: 7870934
    Abstract: A self-retracting lanyard having a housing; a rotatable drum in that housing; a line for winding about that drum; and an improved braking mechanism for preventing the drum in that housing from ratcheting due to line rebounding after a fall arrest event. The braking mechanism has a plurality of pawl lockout elements for flexibly engaging with a stationary component of the lanyard to keep at least one pawl in a locked position during reverse rotation of the drum thereby preventing ratcheting from occurring.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: January 18, 2011
    Assignee: Mine Safety Appliances Company
    Inventor: Timothy W. Ecker
  • Patent number: 7857099
    Abstract: A retractable lanyard mechanism that includes a housing, a frame and a drum that is rotatably supported from the frame mounted within the housing. The drum includes a pair of spaced apart disks, the spaced apart disks being attached to opposite ends of a spool, each spaced apart disk having a perimeter including at least one sperrad.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 28, 2010
    Assignee: Reliance Industries, LLC
    Inventor: Gary E. Choate
  • Publication number: 20100282541
    Abstract: There is provided a height rescue apparatus (4) comprising a flexible load element (6) for attachment at end (6a) to a safety line (3). The other end is attached to a flexible elongate element (10) wound on a drum (8) which is part of a speed control means. A flexible harness element (7a) is attached to a bracket (11) and is connected to a harness (2) arrangement. The flexible load element (6) is releasably connected to the bracket (11) and is intended to take the fall loads associated with a user falling. After such a fall the load element is released to allow a controlled descent using the elongate element (10) and the speed control means.
    Type: Application
    Filed: August 24, 2007
    Publication date: November 11, 2010
    Inventors: Julian Elwyn Renton, Peter Thomas Mence Nott
  • Publication number: 20100252366
    Abstract: A safety device for use in a fall arrest system, has a safety line drum mounted for rotation and a speed responsive engagement mechanism responsive to the speed of rotation of the drum, which is activated above a predetermined rotational speed of the drum to deploy an energy absorber. A rotational transmission member (which may be in the form of a shaft) is coupled, via the speed responsive engagement mechanism, when activated, to rotate with the drum. The energy absorber is deployed in response to operation of the rotational transmission member. The speed responsive engagement mechanism may be mounted intermediate the drum and the energy absorber for ease of replacement.
    Type: Application
    Filed: October 10, 2008
    Publication date: October 7, 2010
    Inventors: Karl Jones, Owain Jones
  • Publication number: 20100224448
    Abstract: A safety device with fall arrest and descending modes includes a housing, a drum, a lifeline, first and second brake assemblies, and a control. The drum is rotatably operatively connected to the housing. The lifeline has an intermediate portion interconnecting a first end and a second end. The first end is operatively connected to the drum. The first and second assemblies are operatively connected to the drum. The control is operatively connected to the first and second brake assemblies and has a first position and a second position. The first position selectively engages the first brake assembly in a descending mode and the second position selectively engages the second brake assembly in a fall arrest mode.
    Type: Application
    Filed: November 18, 2009
    Publication date: September 9, 2010
    Inventors: J. Thomas Wolner, Scott C. Casebolt, Gabriel Grant Gamache, Matthew J. Blackford, Vincent G. Meillet, Joseph Robert Kaiser
  • Publication number: 20100181145
    Abstract: There is disclosed herein a descent device (10) comprising a hollow spool (12) rotatable about a rotational axis (14) and a lifeline, in the form of a braided steel cable (not shown), wound about the spool (12). A centrifugal brake mechanism (18) including a brake assembly, comprising a pair of brake shoes (20) and associated brake pads (21), is engageable with the spool (12) to apply a braking force to the spool (12) as the spool (12) rotates. Biasing members, in the form of a compression springs (22), extend between the brake shoes (20) for biasing the brake shoes (20) and pads (21) into engagement with the spool (12).
    Type: Application
    Filed: June 17, 2008
    Publication date: July 22, 2010
    Applicant: LIFELINE DESCENT SYSTEMS PTY LTD
    Inventor: Eric Hobson
  • Publication number: 20100163343
    Abstract: A personal escape device which can be used by men, women, and children, including physically disabled persons, to descend in a controlled and secure manner from high structures such as office buildings, multistory homes, and the like. The device is designed for a relatively low-cost, small size which may be used by payloads of variable weights. The rescue device of the invention may be a single-use device or a multi-use device.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 1, 2010
    Applicant: STONE'S THROW
    Inventors: KEVIN R. STONE, Michael Strasser, Thomas King, Imraan Aziz
  • Patent number: 7686135
    Abstract: An escape device (10) including a cable (18), a rotatable cable dispensing assembly (22) from which the cable (18) is dispensed under load, a braking mechanism (28) operatively connected to the rotatable cable dispensing assembly (22), whereby a braking response of the braking mechanism (18) is proportional to the rate at which cable (18) is dispensed from the rotatable cable dispensing assembly (22).
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: March 30, 2010
    Inventor: Terry Victor Lee
  • Publication number: 20090223744
    Abstract: A safety apparatus (11) comprising a first housing (25) supporting a first spool (17) and a second spool (21) coaxially mounted and independently rotatable. The safety apparatus (11) also comprises a support line (29) extending from the first spool (17) to the second spool (21) via a second support assembly (27). The safety apparatus (11) also comprises a locking device (35) operably movable between a locked condition wherein the first spool (17) and second spool (21) are locked relative to each other and a released condition wherein the first spool (17) and second spool (21) may rotate independently. The locking device (11) is maintained in a locked condition, locking the first spool (17) relative to the second spool (21), when a load of predetermined value, such as the weight of a fallen operator, is exerted upon the support line (29).
    Type: Application
    Filed: May 9, 2005
    Publication date: September 10, 2009
    Inventor: Leigh Dowie
  • Patent number: 7237651
    Abstract: A rappelling apparatus providing controlled constant speed to a cable unwinding from a rotating spool in frictional engagement with a stationary arcuate surface. Rotations of the spool are responded to by a centrifugal brake acting in inverse proportion to the rotations. An addition brake is provided for selective actuation by a person using the apparatus.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: July 3, 2007
    Assignee: EasyDown Corporation
    Inventors: Ivars Avots, Richard Barton, Herbert H. Loeffler
  • Patent number: 7137481
    Abstract: A fall arrest device used with a fixed safety rope comprises a support arm articulated on a first spindle of the body, a roller in the form of a cylindrical wheel mounted rotating free on a second spindle securedly attached to the support arm, and a centrifugal coupling arranged between a drive member of the roller and the support arm so as to occupy a disengaged position or an engaged position. The centrifugal coupling comprises at least one flyweight movable along a ramp of the drive member against a compression spring, and a connecting interface engaged inside a cylindrical rim of the support arm to transmit the elastic force of the spring to the flyweight.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: November 21, 2006
    Assignee: Zedel
    Inventors: Paul Petzl, Christian Broquerie
  • Publication number: 20040140158
    Abstract: An apparatus that secures a hunter to a tree while in a tree-mounted hunting stand that includes a safety harness assembly (200) having a belt retractor (24) and a body harness (16). The belt retractor is configured to be removably secured about the tree and removably secured to the body harness. The belt retractor along with energy-absorbing materials improves the hunter's safety while in tree stand and provides a sufficiently large range of motion about the stand.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 22, 2004
    Applicant: Breed Automotive Technology, Inc.
    Inventors: Timothy L. Wilcox, Patrick J. Gorman, Gerald R. DeMeyer, William K. King, David R. Arnold
  • Publication number: 20040065508
    Abstract: A rappelling apparatus providing controlled constant speed to a cable unwinding from a rotating spool in frictional engagement with a stationary arcuate surface. Rotations of the spool are responded to by a centrifugal brake acting in inverse proportion to the rotations. An addition brake is provided for selective actuation by a person using the apparatus.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 8, 2004
    Inventors: Ivars Avots, Richard Barton, Herbert H. Loeffler
  • Publication number: 20040055824
    Abstract: The Escape-Right is an emergency escape system comprising: a passenger harness, a cable, a reel, a shaft fixed to the reel permitting rotation of the reel as the cable is unrolled, a reduction gear assembly, a centrifugal brake assembly, a housing enclosing the brake assembly, and a mounting means. The escape right is a means to escape or descend from the upper floors of a building when the usual exits are unavailable. The Escape-Right may be anchored to prepared points, heavy objects within the building, or a ladder placed near the exit portal. The braking mechanism may be attached to the anchor point or the user. In some configurations of the Escape-Right multiple descents may be accomplished without rewinding the cable.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 25, 2004
    Inventors: Loren Eugene Karnes, Paul Alan Van Brunt
  • Publication number: 20040045771
    Abstract: An emergency escape system includes an escape apparatus and a door. The escape apparatus is connected to the door. The escape apparatus includes a cord and a release mechanism. The release mechanism is configured to provide a controlled lowering of a person being lowered on the cord.
    Type: Application
    Filed: March 10, 2003
    Publication date: March 11, 2004
    Applicant: Reshafim (metal doors) Ltd (50%) and Yoav Barzilai (50%)
    Inventors: Yoav Barzilai, Rafi Salhov
  • Publication number: 20030094331
    Abstract: A descent apparatus, preferably for persons, of the individual and portable type, that is hooked or geared in sure and rapid form, with a chain, disposed in a vertical or pendulous form, whereby will be displaced, that offers the possibility to descend load, from high platforms, as buildings, steeps or any artificial or natural formation, that require and permit this type of operation. The design of this apparatus, is provided by a hooking hoop, to hang the harness, with the load to descend and an internal mechanism to brake, compounded by the combination of a pinion, pulleys, gears and a centrifugal brake, permit the controlled descent, uniform, autonomous and automatic, of one or more apparatuses, simultaneous and subsequently by a same line, may be used by persons, without knowledge or previous experience with this equipment, inclusive physically handicapped, or those with some degree of unconsciousness, with aid of third persons.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 22, 2003
    Inventor: Francisco Javier Vivanco Abarca
  • Patent number: 6056086
    Abstract: The device comprises, inside a case, a tightening cam (7) hinged about an axis (8) such that, unused, it does not engage a belaying rope (2) passing through the case and, when the device is subjected to a set acceleration downwards, it pivots towards the rope (2) to tighten it to the case with self-tightening effect. On the cam (7) is mounted a detecting roller (10) which co-operates with the rope (2) when the cam (7) is unused. A spring actuated (13) friction piece (12), at a certain rotational speed of the roller (10), subjects it to a resisting moment which triggers off the pivoting of the cam (7) in the tightening direction. A lever (15), to which the user is linked, engages in a unidirectional manner the cam (7) to push it in tightening position if the user falls. The device simultaneously triggers off several tightening effects in case of a fall.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: May 2, 2000
    Assignee: Tractel, S.A.
    Inventors: Guido Gortan, Maksimiljan Cencic