Settable length fall arrest device
AssigneeMSA Technology, LLC
InventorMaria Rodriguez
Life of this patent
Estimating the term…
Abstract
A fall arrest device (10) includes a drum (1) configured to have a safety line (2) wound thereon, a speed responsive engagement assembly (3, 4, 6) arranged to inhibit rotation of the drum (1) above a predetermined rotational speed, and a traveller (30) configured to move in response to rotation of the drum (1). The traveller (30) is configured to activate the speed responsive engagement assembly (3, 4, 6) when a predetermined length of safety line has been paid out. This allows a user to be restrained from the edge of a worksite or other location where a fall may occur.
Claims18
A fall arrest device comprising:
- a drum configured to have a safety line wound thereon;
- a speed responsive engagement assembly arranged to inhibit rotation of the drum above a predetermined rotational speed;
- and
- a traveller configured to move transversely to a rotational axis of the drum in response to rotation of the drum, wherein the traveller is configured to activate the speed responsive engagement assembly when a predetermined length of safety line has been paid out.
An apparatus for setting the length of safety line that can be paid out from a fall arrest device, the fall arrest device comprising a drum onto which the safety line is wound, wherein the apparatus comprises:
- a traveller plate having a curved path that extends outwards towards the circumference of the traveller plate;
- a carrier plate comprising a guide;
- and
- a traveller configured to be moveably mounted to or within the guide,
- wherein a portion of the traveller is arranged to be received in the curved path of the traveller plate, and
- wherein, in response to rotation of the drum to pay out safety line, the traveller moves along the curved path of the traveller plate and is urged along the guide of the carrier plate.
A fall arrest device comprising:
- a drum configured to have a safety line wound thereon;
- a speed responsive engagement assembly configured to inhibit rotation of the drum above a predetermined rotational speed;
- and
- a traveller configured to move outwards or radially outwards in response to rotation of the drum and to activate the speed responsive engagement assembly when a predetermined length of safety line has been paid out.
A fall arrest device comprising:
- a drum configured to have a safety line wound thereon;
- a speed responsive engagement assembly configured to inhibit rotation of the drum above a predetermined rotational speed;
- a traveller configured to move in response to rotation of the drum and to activate the speed responsive engagement assembly when a predetermined length of safety line has been paid out;
- and
- a traveller plate having a curved path that extends outwards towards a circumference of the traveller plate and is configured to receive a portion of the traveller.
A fall arrest device comprising:
- a drum configured to have a safety line wound thereon;
- a speed responsive engagement assembly arranged to inhibit rotation of the drum above a predetermined rotational speed;
- a traveller configured to move in response to rotation of the drum, wherein the traveller is configured to activate the speed responsive engagement assembly when a predetermined length of safety line has been paid out;
- and
- a mechanism configured to intermittently arrest movement of the traveller while allowing the drum to continue to rotate.
Dependencies are inferred from the claim text.