# US 7,744,476 B2 · Fairground attraction having a heightwise movable people carrier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,476 B2 - Document ID: US7744476B2 - Status: Granted - Kind: B2 - Application number: 11/667,657 - Filed: 2005-11-15 - Published: 2008-08-21 - Granted: 2010-06-29 - Earliest claimed: 2004-11-15 - Assignees: K.I.G. Heerenveen B.V. - Inventors: Hette Knijpstra - Web page: https://patentgrep.com/patent/US7744476B2 ## CPC - A63G 27/04: with tiltable axis - A63G 2200/00: Means for transporting or storing public amusement arrangements - A63G: MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT ## Abstract An embodiment of the present invention relates to a fairground attraction, including an arm which is mounted for rotation about a shaft in a bearing arranged in the top of the frame, on an end of which arm at least one people carrier is suspended, a device for rotatingly driving the arm, and a device for displacing the at least one people carrier in height direction in a rest position of the arm, which displacing device is arranged between the top supporting the bearing and the remaining part of the frame. In one embodiment of the present invention, the top can be pivotable relative to the remaining frame part, for instance about a lying axis which lies transversely of the rotation axis of the arm, and the displacing device can include a drive for causing pivoting of the top. The fairground attraction can further be provided with a device for blocking the displacing device during operation of the fairground attraction. ## Claims ### Claim 1 Fairground attraction, comprising: an upright frame; at least one arm which is mounted for rotation perpendicularly about a longitudinal axis of the at least one arm in a bearing arranged in a top of the frame, said top of the frame being pivotable relative to a remaining part of the frame; at least one people carrier suspended on an end of the least one arm that is spaced from the rotation axis; means for rotatingly driving the at least one arm; a displacing device arranged between the top of the frame supporting the bearing and the remaining part of the frame, which displacing device comprises a drive for causing pivoting of the top of the frame; and means for blocking the displacing device during operation of the fairground attraction, wherein the displacing device is arranged to displace the at least one people carrier in height direction in a rest position of the at least one arm. ### Claim 2 (depends on 1) Fairground attraction as claimed in claim 1, wherein the blocking means comprise a movable locking pin which rigidly connects the top of the frame and the remaining part of the frame to each other. ### Claim 3 (depends on 1) Fairground attraction as claimed in claim 1 wherein the top of the frame is pivotable about a lying axis which lies substantially transversely of the rotation axis of the arm. ### Claim 4 (depends on 1) Fairground attraction as claimed in claim 1, wherein the drive comprises at least one hydraulic jack, one end of which is connected to the top of the frame and the other end to the remaining part of the frame. ### Claim 5 (depends on 4) Fairground attraction as claimed in claim 4, further comprising two hydraulic jacks arranged on either side of the bearing. ### Claim 6 (depends on 4) Fairground attraction as claimed in claim 4, wherein when the at least one hydraulic jack is fully extended the top of the frame pivots so that the at least one arm comes to lie along the remaining part of the frame. ### Claim 7 (depends on 1) Fairground attraction as claimed in claim 1, wherein the drive means of the arm are accommodated in the pivotable top of the frame. ### Claim 8 (depends on 1) Fairground attraction as claimed in claim 1, wherein during operation of the fairground attraction the axis of rotation encloses an angle of 45° with the horizon and the at least one people carrier is rotatable relative to the at least one arm on an oblique axis which encloses an angle of 45° with the at least one arm. ### Claim 9 (depends on 1) Fairground attraction as claimed in claim 1, wherein the at least one arm is mounted in the bearing at a point intermediate along a length of the at least one arm. ### Claim 10 Fairground attraction, comprising: an upright frame; at least one arm which is mounted for rotation perpendicularly about a longitudinal axis of the at least one arm in a bearing arranged in a top of the frame, said top being pivotable relative to a remaining part of the frame; at least one people carrier suspended on an end of the least one arm that is spaced from the rotation axis; a drive device that rotatingly drives the at least one arm; a displacing device arranged between the top of the frame supporting the bearing and the remaining part of the frame, which displacing device comprises a drive for causing pivoting of the top of the frame; and a movable locking pin that rigidly connects the top of the frame and the remaining part of the frame to each other so as to block the displacing device during operation of the fairground attraction, wherein the displacing device is arranged to displace the at least one people carrier in height direction in a rest position of the at least one arm. ### Claim 11 (depends on 10) Fairground attraction as claimed in claim 10, wherein the top of the frame is pivotable about a lying axis which lies substantially transversely of the rotation axis of the at least one arm. ### Claim 12 (depends on 11) Fairground attraction as claimed in claim 11, wherein the drive comprises two hydraulic jacks arranged on either side of the bearing, one end of each hydraulic jack being connected to the top of the frame and the other end to the remaining part of the frame. ### Claim 13 (depends on 12) Fairground attraction as claimed in claim 12, wherein when the two hydraulic jacks are fully extended the top of the frame pivots so that the arm comes to lie along the remaining part of the frame. ### Claim 14 (depends on 11) Fairground attraction as claimed in claim 11, wherein the drive device of the arm are accommodated in the pivotable top of the frame. ### Claim 15 (depends on 10) Fairground attraction as claimed in claim 10, wherein during operation of the fairground attraction the axis of rotation encloses an angle of 45° with the horizon and the at least one people carrier is rotatable relative to the at least one arm on an oblique axis which encloses an angle of 45° with the at least one arm. ### Claim 16 (depends on 10) Fairground attraction as claimed in claim 10, wherein the at least one arm is mounted in the bearing at a point intermediate along a length of the at least one arm.