Lifting frame with hydraulic lines for an accessory...

Details Lifting frame with hydraulic lines for an accessory... Lifting frame with hydraulic lines for an accessory...

2007-08-14

2007-08-14

Crawford, Gene O. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Industrial lift truck or required component thereof

Having extensible vertical guide for load support

C187S234000, C187S238000, C414S592000, C414S918000

Reexamination Certificate

active

10686014

ABSTRACT:
A lifting frame has a stationary vertical mast (outer mast1), at least one telescoping lifting mast (inner mast3), and a lifting carriage (4) movable on the lifting mast. At least one hydraulic line (5) installed on the lifting frame discharges at the lifting carriage (4). When the lifting frame is in the retracted position, the hydraulic line (5) forms a loop (S) which is open on top. The hydraulic line (5) is guided in the vicinity of the loop (S) by a tensioning pulley (6) that dips from above into the loop (S). The tensioning pulley (6) is fastened to a pulley carrier (7). The weight of the pulley carrier can be used to generate a bias force that is exerted on the hydraulic line (5), or drive means connected with the pulley carrier (7) can be provided.

REFERENCES:
patent: 2791293 (1957-05-01), Schenkelberger
patent: 3195751 (1965-07-01), Meyers et al.
patent: 3462028 (1969-08-01), Pi
patent: 3612318 (1971-10-01), Ramsey
patent: 4244449 (1981-01-01), Renk et al.
patent: 4553638 (1985-11-01), Ray
patent: 5992571 (1999-11-01), Lee
patent: 6505710 (2003-01-01), Kato
patent: 43 35 275 (1995-04-01), None
patent: 1 429 685 (1966-02-01), None

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