A seat post head assembly is disclosed. The assembly includes a housing coupled to a seat post, the housing including a cylindrical bore, and a first and second threaded chamber. A rotatable core is inserted into and rotates within the cylindrical bore, the rotatable core including a seat rail clamp assembly to fixedly clamp a set of seat rails and provide independent adjustment of a fore-aft location of the seat without affecting a pitch of the seat. The assembly additionally includes a first threaded member that threads into the first threaded chamber, contacts the rotatable core, and adjusts the pitch of the seat without affecting the fore-aft location of the seat. The assembly also includes a second threaded member that threads into the second threaded chamber, contacts a different portion of the rotatable core, and provides a physical hard stop against a change in the pitch.

A seat post head assembly is disclosed. The assembly includes a housing coupled to a seat post, the housing including a cylindrical bore, and a first and second threaded chamber. A rotatable core is inserted into and rotates within the cylindrical bore, the rotatable core including a seat rail clamp assembly to fixedly clamp a set of seat rails and provide independent adjustment of a fore-aft location of the seat without affecting a pitch of the seat. The assembly additionally includes a first threaded member that threads into the first threaded chamber, contacts the rotatable core, and adjusts the pitch of the seat without affecting the fore-aft location of the seat. The assembly also includes a second threaded member that threads into the second threaded chamber, contacts a different portion of the rotatable core, and provides a physical hard stop against a change in the pitch.

A seat angle adjustment device includes a seat tube, a lower clamp, an upper clamp, two nuts, and two bolts. The top end of the seat tube has two through holes and a convex curved surface. The lower clamp has two lower clamping grooves and a concave curved surface abutted against the convex curved surface of the seat tube. The upper clamp has two upper clamping grooves. Two saddle rail clamping grooves are formed between the upper and lower clamping grooves, and each have a position lower than the vertex of the convex curved surface of the seat tube. The nuts and the bolts are screwed to each other. One of them are disposed to the upper clamp and the other of them are disposed in the through holes. Thus, the present invention allows the lifting stroke of a seat to be increased when used with a liftable seatpost.

A seat angle adjustment device includes a seat tube, a lower clamp, an upper clamp, two nuts, and two bolts. The top end of the seat tube has two through holes and a convex curved surface. The lower clamp has two lower clamping grooves and a concave curved surface abutted against the convex curved surface of the seat tube. The upper clamp has two upper clamping grooves. Two saddle rail clamping grooves are formed between the upper and lower clamping grooves, and each have a position lower than the vertex of the convex curved surface of the seat tube. The nuts and the bolts are screwed to each other. One of them are disposed to the upper clamp and the other of them are disposed in the through holes. Thus, the present invention allows the lifting stroke of a seat to be increased when used with a liftable seatpost.

Embodiments of the invention provide a customizable bicycle saddle for a bicycle. The bicycle saddle has been designed to allow it to be adjusted to match the ischial tuberosities of each rider's pelvis in order to minimize the pressure placed on other portions of the rider's body while seated on the bicycle. The bicycle saddle comprises a first seating portion that has been configured to allow a rider to sit on the bicycle, a second seating portion that has been configured to allow the rider to sit on the bicycle. The bicycle saddle also includes a first adjustment means configured to allow the first seating portion to be moved closer to the second seating portion, and a second adjustment means configured to allow the saddle to be moved closer to a forward portion on the bicycle.

A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A manufacturing method of a seating device includes manufacturing an outer skin; manufacturing a core member via a foaming process; wrapping the core member in the outer skin, coupling a mounting plate at a bottom surface of the core member; and selectively coupling a mounting structure to the mounting plate to form the seating device. The outer skin is constructed to have a top skin layer adhered on a top surface of the core member, a side skin layer adhered on a side surface of the core member, and a bottom skin layer adhered on a bottom surface of the core member. Particularly, the top skin layer of the outer skin is adhered on the top surface of the core member edge-to-edge to initially align and retain the outer skin on the core member.

A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

Embodiments of the invention provide a customizable bicycle saddle for a bicycle. The bicycle saddle has been designed to allow it to be adjusted to match the ischial tuberosities of each rider's pelvis in order to minimize the pressure placed on other portions of the rider's body while seated on the bicycle. The bicycle saddle comprises a first seating portion that has been configured to allow a rider to sit on the bicycle, a second seating portion that has been configured to allow the rider to sit on the bicycle. The bicycle saddle also includes a first adjustment means configured to allow the first seating portion to be moved closer to the second seating portion, and a second adjustment means configured to allow the saddle to be moved closer to a forward portion on the bicycle.