Energy-absorbing structure for a tether line, and a tether line incorporating the same
OwnerAlf Kristian Fjelldalinventor
Life of this patent
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Abstract
An energy-absorbing structure for a tether line includes a helical spring and a first connector for securing a first end of the helical spring to a first fastener (such as a support cable section, an eye bolt or an eye nut). The first connector has an externally threaded portion for threadedly receiving the first end of the helical spring. A sleeve is provided on the connector, extending over at least part of the first end of the helical spring and the external threaded portion of the connector, for retaining the helical spring on the connector. Additionally or alternatively, the connector includes a tapered portion extending from the inner end of the externally threaded portion.
Claims16
An energy-absorbing structure for a tether line, comprising:
- a helical spring;
- a connector having an externally threaded portion for threadedly receiving a first end of the helical spring;
- a fastener to which the connector secures the first end of the helical spring, wherein the fastener has a ring-shaped or looped end;
- a sleeve provided on the connector and extending over at least part of the first end of the helical spring and the externally threaded portion of the connector, the sleeve being configured to retain the helical spring on the connector.
An energy-absorbing structure for a tether line, comprising:
- a helical spring;
- and
- a connector for securing a first end of the helical spring to a first fastener, the connector having an externally threaded portion for threadedly receiving the first end of the helical spring,
- wherein the connector further comprises a tapered portion extending from the inner end of the externally threaded portion.
A tether line comprising an energy-absorbing structure, the energy absorbing structure comprising:
- a helical spring;
- a connector having an externally threaded portion for threadedly receiving the first end of the helical spring;
- and
- a sleeve provided on the connector and extending over at least part of the first end of the helical spring and the external threaded portion of the connector, the sleeve being configured to retain the helical spring on the connector.
A fall arrest line comprising an energy-absorbing structure, the energy absorbing structure comprising:
- a helical spring;
- a connector having an externally threaded portion for threadedly receiving the first end of the helical spring;
- and
- a sleeve provided on the connector and extending over at least part of the first end of the helical spring and the external threaded portion of the connector for retaining the helical spring on the connector.
Dependencies are inferred from the claim text.