Bicycle seat

A structure to support the ischial tuberosities of a user of a cycling device while gravity is applying a downward force on the ischial tuberosities and the user's legs are moving in a repetitive pedaling cycle during which forces are being applied that tend (1) to cause the user's respective ischial tuberosities (a) to move upward and downward relative one another and each relative to the to a frame of the cycling device and in opposite phases relative to one another and (b) to move forward and backward relative to one another and each relative to the frame of the cycling device and in opposite phases relative to one another and (2) to cause the angular orientations of the bottom surfaces of the user's buttocks to vary back and forth, relative to a hypothetical horizontal plane that is fixed relative to the frame of the device, and in opposite rotational phases relative to one another, the structure comprising

• two buttock supports having surfaces against which the bottom surfaces of the user's respective buttocks bear during the pedaling cycle, and
• a mechanical system that connects the two buttock supports to the frame of the device to permit simultaneously (1) motion of the two buttock supports (a) upward and downward relative to one another and each relative to the a frame of the device and in opposite phases relative to one another and (b) backward and forward relative to the frame of the device and in opposite phases relative to one another and (2) free variation of the angular orientations of the bottom surface of each of the user's buttocks and independently from one another.

A structure to support the ischial tuberosities of a user of a device to which the structure is attached while gravity is applying a downward force on the ischial tuberosities, the structure comprising:

• two buttock supports having surfaces against which the bottom surfaces of the user's respective buttocks bear;
• a rigid transverse beam that couples the two buttock supports together and that forms an axis parallel to an axis between the ischial tuberosities during use;
• a connection between the rigid transverse beam and the device to which the structure is attached that allows the axis formed by the rigid transverse beam to change its orientation relative to the device to remain parallel to the axis formed by the ischial tuberosities during use;
• and
• two connections, each connecting one of the buttock supports and the transverse beam to allow the surface of the buttock support to independently tilt relative to the transverse beam.