摘要:
A shock absorbing device for a generally horizonal lifeline wherein one end of the lifeline is mounted at fixed location, the other end of the lifeline is connected to one end of the shock absorbing device, one end of a turnbuckle is connected to the other end of the shock absorbing device and the other end of the turnbuckle is mounted at a fixed location. The shock absorbing device has a frangible bolt that breaks when a predetermined amount of force is applied thereto, which force is then absorbed by shock absorbing device. Also, shock absorbing devices are used to connect electric power cables to spaced apart supports.
摘要:
Apparatus for limiting the amount of force applied to a cable of a hoist by applying a force on clutch plates which are operatively joined to rotatable plates so that there is relative rotation between the clutch plates and the rotatable place when a force, equivalent to that placed on the clutch plates, is placed on the load supporting end of the cable. A fall arresting device is also provided having arresting apparatus for applying a force to rotate a shaft in a clockwise direction and for permitting controlled rotation of the shaft in a counter-clockwise direction but arresting uncontrolled rotation of the shaft in a counter-clockwise direction.
摘要:
A retractable lifeline comprises a housing a drum rotationally mounted in said space and a lanyard wound about said drum. The lanyard extends from the housing and is extendable from said housing and retractable into said housing. The retractable lifeline further includes a lock assembly to prevent rotation of said drum, and hence extension or retraction of said lanyard, when said lanyard is at a desired length, and an override of the lock mechanism in case of a fall so that the retractable internal shock absorption and clutch mechanism can arrest the fall.
摘要:
Clamping apparatus for providing a fixed support on a fixed beam or other similar structures wherein outer and inner elongated members are mounted for relative sliding telescoping movement therebetween and are moved by a rotatable threaded bolt and each of the outer and inner elongated members have an inclined surface so that when the inclined surface of the jaws contact the opposite side edges of the fixed beam the facing surfaces of the fixed beam and the outer and inner elongated members are moved into intimate contact.
摘要:
Apparatus for moving personnel or materials through an opening in a sidewall of a vessel and down into the vessel wherein a lower support and an upper support are mounted on the portion of the sidewall defining the opening and have a tripod supported thereon and located within the vessel. A hoist and a fall arresting device are mounted on the upper support and the cables thereof are passed over pulleys mounted on the tripod so that personnel or materials may be attached to the snaphook on the end of the cable and moved through the opening and lowered into the vessel.
摘要:
Apparatus for limiting the amount of force applied to a cable of a hoist by applying a force on clutch plates which are operatively joined to rotatable plates so that there is relative rotation between the clutch plates and the rotatable place when a force, equivalent to that placed on the clutch plates, is placed on the load supporting end of the cable. Also, two fall arresting devices are provided.
摘要:
Apparatus and method for securing an anchor strap in a relatively fixed position at a location which is spaced a substantial distance from a fixed surface wherein the anchor strap has a relatively flexible intermediate portion, a relatively rigid one end portion having an anchor ring secured thereto and a closed loop at the other end portion and wherein an operating tool mounted on the end of an extensible handle is used to pass the relatively rigid one end portion over a fixed support and then pull the relatively rigid one end portion through the closed loop to secure the anchor strap on the fixed support and wherein another operating tool mounted on the end of the extensible handle is used to connect or disconnect a snap hook, having a lifeline attached thereto, to or from the anchor ring. In another embodiment, a portion of the relatively flexible intermediate portion extending from the relatively rigid one end portion is provided with stitching to add rigidity thereto. Also, a reinforcing member is secured to the inner surface of the closed loop so that when a portion of the closed loop is turned inside out it will be held in an open configuration. In another embodiment, the closed loop has a twist therein. Also, the operating tool has a releasable retaining portion for releasably retaining a portion of the relatively flexible intermediate portion for use in removing the anchor strap from the fixed support.
摘要:
A retractable fall arrest device comprises a unit housing, a spring sub-assembly, a brake/clutch sub-assembly, and a drum assembly. The spring and brake/clutch sub-assemblies each include shaft portions which extend into the housing and are removably connected together or to the drum assembly, and support the drum assembly in the housing. The spring and brake/clutch assembly are themselves removably connected to the unit housing. Finally, the unit housing comprises two wall members (i.e., clam shells) which are removably connected together. This fall arrest device allows for replacement of any of the four constituent components of the device in the field, thus reducing the down time between repairs or recertification of a particular fall arrest device.
摘要:
A system for indicating the use of a fall arresting device to arrest a fall wherein a collapsible member is mounted on one of the load supporting members so that the collapsible member will collapse when a predetermined load has been applied thereto but will remain substantially in place to indicate that the predetermined load had been applied thereto.
摘要:
Apparatus for mounting load supporting equipment, such as a D-ring, on a fixed vertical or horizontal support wherein a movement preventing device is used to hold an elongated strap of material in position on the fixed support by preventing relative movement between superposed end portions of the elongated strap and wherein, in one embodiment, a support member for supporting the load supporting equipment is secured to the movement preventing device and in another embodiment a support bracket for supporting the load supporting equipment is held in a location against a portion of the fixed vertical or horizontal support.