Linear motion devices

Details Linear motion devices Linear motion devices

1975-12-30

1977-08-16

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

F16H 1904

Patent

active

040417867

ABSTRACT:
A linear motion device intended particularly as the elevating mechanism of a medical examination table consists of four parallel rack members on one relatively movable part each engaged by a respective pinion carried by the second relatively movable part. The pinions are mounted in pairs on two parallel shafts, the two adjacent pinions on the two shafts being adjacent the same support member mounting the shafts. Stabilizing means comprise two meshed pinions each of which meshes with a respective rack rigidly mounted on the second movable part as far as possible from the first-mentioned pinions. A pair of rollers spaced from the meshed rollers engage another rack member for stabilizing action at right angles to that provided by the meshed pinions.

REFERENCES:
patent: 522252 (1894-07-01), Garrison
patent: 2555254 (1951-05-01), Stebbins
patent: 3165771 (1965-01-01), Kamborain et al.
patent: 3338140 (1967-08-01), Sheesley
patent: 3347109 (1967-10-01), Adams et al.
patent: 3771781 (1973-11-01), Lackey

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