Rocker structure for rocking chairs

Claim 1

A rocking structure for a chair, comprising: a pair of generally horizontally-disposed rigid plates, one spaced vertically above and in line with the other, the upper plate being adapted for connection to the seat of the chair, said plates having corresponding opposite side margins, and corresponding front and rear margins which, when said upper plate is connected to the chair seat, face the front and rear of the chair, means connected to the lower plate and including legs for supporting the chair from a floor surface, a pair of rigid posts extending transversely between said plates, each post disposed inwardly of a respective one of the opposite side margins of said plates, and each post having its upper and lower ends engaging respective facing surfaces of said upper and lower plates at a localized place intermediate the length of a respective side margin in a manner to provide rocking movement of said upper plate relative to said lower plate and in turn provide for rocking movement of the chair seat in a direction from the front to the rear and vice versa, and a pair of coil springs disposed on opposite sides of each post in line with the rocking movement of said upper plate, said springs drawing said plates toward each other and yieldably opposing rocking movement of said chair seat.