Child Motion Device with Adjustable Seat

Abstract

A child motion device has a support having an upstanding post, a seat mounted on the upstanding post, and a rotation assembly. The rotation assembly has detents carried by either the seat or the post and spaced around and radially outward from the post, and has a spring biased protrusion carried on the other of the seat and the post. The seat can be rotated to different orientations corresponding to the detent positions. The protrusion seats in one of the detents positioning the seat in a selected orientation relative to the support and determined by the detent in which it is seated.

1 . A child motion device comprising:
 a support having an upstanding post;   a seat mounted on the upstanding post; and   a rotation mechanism having
 a plurality of detents provided on one of the seat and the post and spaced circumferentially around and radially outward relative to the post; and 
 a spring biased protrusion carried on the other of the seat and the post, 
   wherein the seat can be rotated about the post to different orientations corresponding to the plurality of detents and wherein the spring biased protrusion is biased into and seats in a selected one of the plurality of detents to position the seat in a desired one of the different orientations relative to the support frame.   
     
     
         2 . A child motion device according to  claim 1 , wherein the upstanding post is part of a swing arm on a swing. 
     
     
         3 . A child motion device according to  claim 1 , wherein the upstanding post is a tube. 
     
     
         4 . A child motion device according to  claim 1 , wherein the rotation mechanism has a housing and a portion of the rotation mechanism is carried on a downward facing surface of the housing. 
     
     
         5 . A child motion device according to  claim 1 , wherein the rotation mechanism includes a collar on an underside facing surface of the rotation mechanism or the seat, the plurality of detents being carried on a surface of the collar. 
     
     
         6 . A child motion device according to  claim 1 , wherein the rotation mechanism includes a hub carried on the upstanding post, the spring biased protrusion carried on the hub. 
     
     
         7 . A child motion device according to  claim 1 , wherein the rotation mechanism further comprises:
 a collar having a surface, the plurality of detents carried on the surface of the collar; and   a hub carried on the upstanding post, the spring biased protrusion carried on the hub.   
     
     
         8 . A child motion device according to  claim 7 , wherein the hub seats within the surface of the collar and the spring biased protrusion is biased radially outward against the surface of the collar. 
     
     
         9 . A child motion device according to  claim 1 , further comprising two of the spring biased protrusions, each being carried on a metal leaf spring positioned opposite one another on a hub of the rotation mechanism. 
     
     
         10 . A child motion device according to  claim 1 , wherein the spring biased protrusion is carried on a resilient plastic bridge formed integral with a hub of the rotation mechanism. 
     
     
         11 . A child motion device according to  claim 1 , wherein the rotation mechanism includes a collar protruding downward from part of the rotation mechanism or the seat and includes a hub connected to the upstanding post, the hub seated within and bounded by the collar. 
     
     
         12 . A child motion device according to  claim 1 , further comprising four of the detents defining four selectable seat orientations. 
     
     
         13 . A child motion device according to  claim 1 , further comprising a pair of the spring biased protrusions and at least two pairs of the plurality of detents, the pair of spring biased protrusions seating in a selected pair of the plurality of detents. 
     
     
         14 . A seat for a child motion device, the seat comprising:
 a seat bottom section;   a seat back section coupled to the seat bottom section at a pair of spaced apart pivot joints, the seat back section pivotable between at least a first recline position and a second recline position different from the first recline position relative to the seat bottom section; and   a release mechanism carried on the seat, the release mechanism including
 a release actuator carried on the seat back section, 
 a latch pin positioned at each of the pivot joints remote from the release actuator, 
 a curved surface within each of the pivot joints, 
 a bar extending transversely across the seat and having curved free ends each lying along one of the curved surfaces within a corresponding one of the pivot joints, and 
 holes formed in the curved free ends of the bar and facing the latch pins, each hole corresponding to one of the first and second recline position, 
   wherein the release actuator, when actuated, withdraws the latch pins from the holes in the bar, and, when released, biases the latch pins into engagement with respective ones of the holes in the bar.   
     
     
         15 . A seat according to  claim 14 , wherein the release mechanism includes a bent wire connected to the release actuator and terminating at free ends defining the latch pins. 
     
     
         16 . A seat according to  claim 14 , wherein the pivot joints each include a tongue on each free end of one of the seat back and seat bottom sections and include a yoke on each free end of the other of the seat back and seat bottom section, the tongues received in gaps in the yokes. 
     
     
         17 . A seat according to  claim 16 , wherein the curved surfaces include an end face on each tongue and an interior surface within each yoke, each end face mating with and bearing against a respective interior surface in each pivot joint. 
     
     
         18 . A seat according to  claim 17 , further comprising a groove extending along each of the end faces and interior surfaces, wherein each curved free end of the bar is captured between the grooves on a respective one of the end faces and interior surfaces within the corresponding pivot joint.