Pulley

Details Pulley Pulley

2009-04-06

2010-06-15

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

C254S399000, C254S402000, C254S405000, C024S12900C, C024S130000

Reexamination Certificate

active

07735809

ABSTRACT:
Embodiments of the present invention provide pulley apparatuses that can be easily incorporated into block-and-tackle configurations. In some embodiments, a rope can be easily dropped into place and removed, rather than having to be threaded in. For example, the pulley housing can include a rope channeling structure near the end opposite the aperture, and the rope channeling structure can facilitate introducing the rope into engagement with the wheel and/or removing the rope from engagement with the wheel. In some embodiments, the rope channeling structure can prevent the rope from inadvertently becoming removed from the pulley. Some pulley apparatuses can comprise a minimal number of parts, which can significantly simplify the manufacturing process and provide for a more consistent final product.

REFERENCES:
patent: 4120077 (1978-10-01), Fink
patent: 4541615 (1985-09-01), King, Jr.
patent: 4719668 (1988-01-01), Cavanagh
patent: 5201496 (1993-04-01), Bradette et al.
patent: 6094783 (2000-08-01), Parsons
patent: 7380771 (2008-06-01), Joy et al.
patent: 7428769 (2008-09-01), Fontaine et al.
patent: 7562862 (2009-07-01), Jackson

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