Personal safety methods and apparatus

Fire escape – ladder – or scaffold – Torso harness – Strand-engaging – with descent retarder

Reexamination Certificate

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Details

C182S192000, C188S065500

Reexamination Certificate

active

07108099

ABSTRACT:
A safety anchor (20) for securing a user to a substantially vertical safety structure, e.g., elevator cable (21). Safety anchor (20) includes a back plate (26) to which are pivotally mounted a roller (28), inner cam assembly (30) and outer cam assembly (32). Each cam assembly (30,32) includes a lever arm (50,36) to which is mounted a cam (52,42). A user (25) is secured by means of carabiners and a short tether cable, for example, to the free ends of lever arms (50,36). Cable (21) threads between cams (52,42) which are pivoted to compress the cable in response to downward force exerted against the lever arms (50, 36).

REFERENCES:
patent: 320664 (1885-06-01), Lee
patent: 376622 (1888-01-01), Abbott
patent: 383211 (1888-05-01), Calkins
patent: 387436 (1888-08-01), O'Neil
patent: 1033311 (1912-07-01), Huber
patent: 3142263 (1964-07-01), Craft
patent: 3437178 (1969-04-01), Postlethwait
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patent: 5316103 (1994-05-01), Bell et al.
patent: 5860493 (1999-01-01), Cherpitel
patent: 5934408 (1999-08-01), Flux
patent: 6059072 (2000-05-01), Cho
patent: 6155384 (2000-12-01), Paglioli
patent: 3510602 (1986-09-01), None
patent: 2626184 (1989-07-01), None

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