# US 9,433,304 B2 · Child motion apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,433,304 B2 - Document ID: US9433304B2 - Status: Granted - Kind: B2 - Application number: 14/640,156 - Filed: 2015-03-06 - Published: 2015-09-10 - Granted: 2016-09-06 - Earliest claimed: 2014-03-07 - Assignees: Wonderland Nurserygoods Company Limited - Applicants: Wonderland Nurserygoods Company Limited - Inventors: Jonathan K. Mountz; William B. Bellows; John T. Saint; John Sims; Peter R. Tuckey - Web page: https://patentgrep.com/patent/US9433304B2 ## CPC - A47D 9/02: with rocking mechanisms - A47D 9/057: {driven by electric motors} - A47D 13/101: {Foldable rocking chairs} - A47D 13/105: {pivotally mounted in a frame} - A47D: FURNITURE SPECIALLY ADAPTED FOR CHILDREN (school benches or desks A47B39/00, A47B41/00) ## Abstract A child motion apparatus includes a base, a seat arranged above the base, and an upright column disposed below the seat. The seat includes a bottom frame segment and a seatback frame segment, the bottom frame segment having a front and a rear end, the seatback frame segment being pivotally connected with the rear end of the bottom frame segment. The upright column pivotally supports the seat above the base, and is connected with the bottom frame segment at a location between the front end and the rear end thereof. ## Claims ### Claim 1 A child motion apparatus comprising: a base; a seat arranged above the base, the seat including a bottom frame segment, a seatback frame segment, and a first and a second surrounding frame portion pivotally connected with each other, the bottom frame segment having a front and a rear end, the seatback frame segment being pivotally connected with the rear end of the bottom frame segment, the first surrounding frame portion being pivotally connected with the seatback frame segment, and the second surrounding frame portion being pivotally connected with the front end of the bottom frame segment; and an upright column disposed below the seat and pivotally supporting the seat above the base, the upright column being connected with the bottom frame segment at a location between the front end and the rear end thereof. ### Claim 2 (depends on 1) The child motion apparatus according to claim 1, further including a recline adjustment mechanism arranged adjacent to a pivot hinge connecting the seatback frame segment with the first surrounding frame portion, the recline adjustment mechanism being operable to modify an inclination angle of the seatback frame segment relative to the bottom frame segment. ### Claim 3 (depends on 2) The child motion apparatus according to claim 2, wherein the recline adjustment mechanism includes: a housing pivotally connected with the first surrounding frame portion, the seatback support segment being assembled through the housing for sliding movement along a lengthwise axis extending along the seatback frame segment; and a latch connected with the housing, the latch being operable to block a sliding displacement of the seatback frame segment relative to the housing. ### Claim 4 (depends on 1) The child motion apparatus according to claim 1, further including a carrying handle, the first surrounding frame portion being respectively connected pivotally with the second surrounding frame portion and the carrying handle about a same pivot axis. ### Claim 5 (depends on 1) The child motion apparatus according to claim 1, wherein the upright column defines a rotation axis about which the seat is rotatable sideways, the rotation axis being tilted rearward relative to a vertical direction. ### Claim 6 (depends on 5) The child motion apparatus according to claim 5, wherein a rearward inclination angle of the rotation axis relative to the vertical direction is between about 0 and about 15 degrees. ### Claim 7 (depends on 1) The child motion apparatus according to claim 1, further including a magnetic drive system operable to drive the seat to sway sideways about a rotation axis defined by the upright column, the magnetic drive system including a first and a second magnetic member respectively affixed with the seat and the base at positions offset from the rotation axis, a magnetic force being generated between the first and second magnetic members for maintaining the swaying motion of the seat when the first and second magnetic members are in proximity of each other. ### Claim 8 (depends on 7) The child motion apparatus according to claim 7, wherein at least one of the first and second magnetic member is an electromagnet. ### Claim 9 (depends on 7) The child motion apparatus according to claim 7, wherein the base has a longitudinal axis extending centrally from a rear to a front of the base, and the second magnetic member is arranged in alignment with the longitudinal axis. ### Claim 10 (depends on 7) The child motion apparatus according to claim 7, wherein the seat is fixedly connected with a bar segment extending radially from the upright column, the first magnetic member being arranged at a distal end of the bar segment that is remote from the upright column. ### Claim 11 (depends on 10) The child motion apparatus according to claim 10, wherein the base includes at least one ramp structure and has a first longitudinal axis extending centrally from a rear to a front of the base, and the seat is vertically movable relative to the base and has a second longitudinal axis extending centrally from a rear to a front of the seat, the bar segment coming into sliding contact against the ramp structure when the seat and the bar segment are displaced downward, the sliding contact between the ramp structure and the bar segment causing the seat to rotate to a centered position where the first and second longitudinal axes are substantially aligned with each other. ### Claim 12 (depends on 11) The child motion apparatus according to claim 11, wherein the bar segment is substantially aligned with the first longitudinal axis when the seat is in the centered position. ### Claim 13 (depends on 1) The child motion apparatus according to claim 1, wherein the seat is movable vertically relative to the base, and the base includes two ramp structures configured to capture the seat in a centered position with respect to the base as the seat is lowered toward the base. ### Claim 14 (depends on 13) The child motion apparatus according to claim 13, wherein the seat is affixed with a bar segment, the bar segment being captured in a space between the two ramp structures to lock the seat in the centered position when the seat is lowered toward the base. ### Claim 15 (depends on 1) The child motion apparatus according to claim 1, wherein the base includes an adjustable frame on which the upright column is arranged, the adjustable frame being movable along with the upright column and the seat between an upper and a lower position, the seat when in the lower position being in a collapsed state, and the seat when in the upper position being deployable for use. ### Claim 16 (depends on 15) The child motion apparatus according to claim 15, wherein the base further includes a base frame, and the adjustable frame is pivotally connected with the base frame. ### Claim 17 (depends on 15) The child motion apparatus according to claim 15, wherein the base further includes an abuttal member and a release actuator connected with each other, the abuttal member being engageable with the adjustable frame for keeping the upright column and the seat in the upper position, and the release actuator being operable to disengage the abuttal member from the adjustable frame for allowing a downward displacement of the upright column and the seat from the upper position to a collapsed position. ### Claim 18 (depends on 17) The child motion apparatus according to claim 17, wherein the release actuator is accessible at an underside of the base. ### Claim 19 A child motion apparatus comprising: a base having a shell body; a seat arranged above the shell body of the base; a bar segment fixedly connected with the seat and disposed inside the shell body; an upright column pivotally supporting the seat above the base, the upright column defining a rotation axis of the seat relative to the base; and a magnetic drive system operable to drive the seat and the bar segment to sway sideways about the rotation axis, the magnetic drive system including a first magnetic member affixed with the bar segment and a second magnetic member affixed with the shell body, a magnetic force being generated between the first and second magnetic members for maintaining a swaying motion of the seat when the first and second magnetic members are in proximity of each other. ### Claim 20 (depends on 19) The child motion apparatus according to claim 19, wherein the magnetic drive system is operable to alternately generate magnetically repulsive and attractive forces between the first and second magnetic members in a self-start phase for initiating the sway motion of the seat. ### Claim 21 (depends on 19) The child motion apparatus according to claim 19, wherein the magnetic drive system is operable in a swaying control mode in which a magnetically attractive force is generated between the first and second magnetic members when the first magnetic member travels toward the second magnetic member at a speed lower than a predetermined value, and no magnetic forces are generated between the first and second magnetic members when the first magnetic member travels away from the second magnetic member. ### Claim 22 (depends on 19) The child motion apparatus according to claim 19, wherein the second magnetic member is positioned in the shell body of the base behind the upright column. ### Claim 23 (depends on 19) The child motion apparatus according to claim 19, wherein the bar segment extends radially from the rotation axis. ### Claim 24 (depends on 19) The child motion apparatus according to claim 19, wherein the bar segment is centrally affixed with the seat, and the second magnetic member is centrally affixed with the base. ### Claim 25 (depends on 19) The child motion apparatus according to claim 19, wherein the base includes at least one ramp structure and has a first longitudinal axis extending centrally from the rear to the front of the base, and the seat is vertically movable relative to the base and has a second longitudinal axis extending centrally from a rear to a front of the seat, the bar segment coming into sliding contact against the ramp structure when the seat and the upright column are displaced downward, the sliding contact between the ramp structure and the bar segment causing the seat to rotate to a centered position where the first and second longitudinal axes are substantially aligned with each other. ### Claim 26 (depends on 25) The child motion apparatus according to claim 25, wherein the at least one ramp structure include two ramp structures, and the bar segment is captured in a space between the two ramp structures when the seat is lowered toward the base. ### Claim 27 (depends on 25) The child motion apparatus according to claim 25, wherein the upright column is arranged on an adjustable frame, the adjustable frame being movable with the upright column when the seat is vertically collapsed toward the base. ### Claim 28 (depends on 27) The child motion apparatus according to claim 27, wherein the base further includes an abuttal member and a release actuator connected with each other, the abuttal member being engageable with the adjustable frame for keeping the upright column and the seat in an upper position where the seat is deployable for use, and the release actuator being operable to disengage the abuttal member from the adjustable frame for allowing the seat to collapse downward toward the base. ### Claim 29 (depends on 19) The child motion apparatus according to claim 19, wherein the upright column is positioned below the seat. ### Claim 30 (depends on 19) The child motion apparatus according to claim 19, wherein the upright column includes a shaft attached with the base, and a sleeve affixed with the seat and rotatable about the shaft, the bar segment being affixed with the sleeve. ### Claim 31 (depends on 19) The child motion apparatus according to claim 19, wherein the rotation axis of the seat is inclined an angle relative to a vertical direction, and the seat is inclined rearward. ### Claim 32 (depends on 31) The child motion apparatus according to claim 31, wherein a rearward inclination angle of the rotation axis relative to the vertical direction is between about 0 and about 15 degrees. ### Claim 33 A child motion apparatus comprising: a base; a seat arranged above the base, the seat including a bottom frame segment, a seatback frame segment and a surrounding frame, the bottom frame segment having a front and a rear end, the seatback frame segment having a lower end and an upper end, the lower end of the seatback frame segment being pivotally connected with the rear end of the bottom frame segment, the surrounding frame having a rear and a front portion opposite to each other that are respectively connected with the upper end of the seatback frame segment and the front end of the bottom frame segment; and an upright column disposed below the seat and pivotally supporting the seat above the base, the upright column being connected with the bottom frame segment at a location between the front end and the rear end thereof. ### Claim 34 (depends on 33) The child motion apparatus according to claim 33, wherein the base includes a shell body, and the seat is fixedly connected with a bar segment enclosed in the shell body, the bar segment being affixed with a first magnetic member, and the shell body being affixed with a second magnetic member, a magnetic force being generated between the first and second magnetic members for maintaining a swaying motion of the seat and the bar segment relative to the base when the first and second magnetic members are in proximity of each other.