Scissor mechanism in particular for lift tables

Details Scissor mechanism in particular for lift tables Scissor mechanism in particular for lift tables

1988-03-11

1989-08-22

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating to reciprocating

248421, 254 9C, 254122, 384 42, F16H 2144, B66F 322

Patent

active

048584827

ABSTRACT:
A scissor mechanism is provided with two scissor arms (1,2) and a hydraulic cylinder (12) which extends between engagement points on the scissor arms (1,2) which are offset from the common bearing (3) of the scissor arms. Between the scissor arms there is provided a wedge mechanism (18,19) comprising a pressure roller (18) and a pressure wedge (19). The pressure roller (18) is mounted on a displaceable sleeve (15) which serves as the engagement point for the hydraulic cylinder at one of the scissor arms (1). By displacement of the sleeve (15) the scissor arms (1,2) are wedged out of their originally parallel position (FIG. 1).

REFERENCES:
patent: 2480916 (1949-09-01), Gibson
patent: 2533980 (1950-12-01), Weaver
patent: 3282566 (1966-11-01), Clarke
patent: 3554598 (1971-01-01), Dunkin
patent: 3558103 (1971-01-01), Lodige
patent: 3901356 (1975-08-01), Butler
patent: 4125242 (1978-11-01), Meiller et al.
patent: 4526346 (1985-07-01), Galloway et al.
patent: 4534544 (1985-08-01), Heide
patent: 4685731 (1987-08-01), Migot
patent: 4738081 (1988-04-01), Tisma

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