Mechanism for tilting chairs

Details Mechanism for tilting chairs Mechanism for tilting chairs

1976-01-13

1977-04-19

Staab, Lawrence J.

Supports

Suspended supports

Adjustable

248397, 248382, 297304, A45D 1904, F16M 1300

Patent

active

040184153

ABSTRACT:
A tilting chair support mechanism is provided including a spindle support, a pivotally mounted tilt plate and an encapsulated spring acting between the support and the tilt plate biasing the plate into a forwardly or return tilted position. The spring is mounted within the side silhouette of the plate. The mechanism is so designed that the plate can be released for full forward pivotal tilting in which position, the spring is released for removal or replacement. Means are provided for limiting the forward pivotal movement of the plate when the chair is in normal use. Provision is made for adjustment of the preload applied to the encapsulated spring.

REFERENCES:
patent: 170561 (1875-11-01), Heywood
patent: 555694 (1896-03-01), Gilson
patent: 729571 (1903-06-01), Germanson
patent: 1866498 (1932-07-01), Bolens
patent: 2082499 (1937-06-01), Keyworth
patent: 2447283 (1948-08-01), Sheldrick
patent: 2518817 (1950-08-01), Ries
patent: 2558049 (1951-06-01), Hersey et al.
patent: 2619153 (1952-11-01), Van Osselen
patent: 3480249 (1969-11-01), Lie

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