Pulley block

Details Pulley block Pulley block

2005-12-13

2005-12-13

Marcelo, Emmanuel M (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

C254S415000

Reexamination Certificate

active

06974125

ABSTRACT:
A line-handling block particularly for sailing vessels has an attachment device (30) rotatably mounted in the body. Locking device (50) are slidable in keyhole slots (60) into or out of engagement with the attachment device (30). When in engagement the locking device (50) may permit only limited rotation of the attachment device to either side of a central position. They may yield if an excessive torsional load is experienced, and may be supplied in various interchangeable forms for fitting to a given block so that its characteristics may be adjusted.

REFERENCES:
patent: 691492 (1902-01-01), Roney
patent: 2291894 (1942-08-01), Gwinn, Jr.
patent: 2453357 (1948-11-01), Barkley
patent: 3526389 (1970-09-01), Horgan, Jr.
patent: 3528645 (1970-09-01), Harken
patent: 3705708 (1972-12-01), Cunningham
patent: 3773295 (1973-11-01), Holmes
patent: 3806094 (1974-04-01), Harken
patent: 3899158 (1975-08-01), Johnson
patent: 5984278 (1999-11-01), Hartlmeier
patent: 811599 (1959-04-01), None

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