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
Patent
1993-10-18
1995-12-19
Stodola, Daniel P.
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
254401, 254403, 294 821, B66D 306, B66C 134
Patent
active
054762472
ABSTRACT:
A load block having a body, a sheave rotatably positioned within the body, and a hook having a shank received within the body and having a portion positioned in a generally air-tight volume within the body. The body includes a first side plate, a second side plate in generally parallel relationship to the first side plate, and a crossblock affixed to and extending between the first and second side plates. The air-tight volume is formed within the crossblock. The crossblock includes a cover which is affixed to a top surface of the crossblock and is in generally liquid-tight relationship to the crossblock. A liquid fills the volume of the crossblock so as to extend around a portion of the shank. The cover has a check valve positioned on a surface for allowing air to pass from the volume and for preventing air from passing into the volume. The sheave includes an inner race around a bearing assembly adjacent to a shaft formed in the body. A pair of dead-eyes are positioned on opposite sides of the body.
REFERENCES:
patent: 1713586 (1929-05-01), Wright
patent: 2292457 (1942-08-01), Maier
patent: 2536417 (1951-01-01), Black
patent: 2570320 (1951-10-01), Christensen
patent: 2657905 (1953-11-01), Bennett
patent: 2681794 (1954-06-01), Johnson
patent: 2717184 (1955-09-01), Amerman
patent: 2980400 (1961-04-01), Long
patent: 3179376 (1965-04-01), Botten
patent: 4466651 (1984-08-01), Sowa et al.
Mansen Michael R.
MSI Crane & Equipment Co.
Stodola Daniel P.
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