Embodiments generally relate to hinge mechanisms. Many of the hinge mechanism embodiments may be used in foldable furniture. The foldable furniture may be a foldable seat or table. The hinge mechanism may include a central cylinder with a body defining a hinge axis. The central cylinder may have rotate channel(s) transverse to the hinge axis and locking channels extending axially from the rotate channel(s). Collar(s) may couple with the central cylinder and may include pin(s) that protrude inwardly into the rotate channel(s) and locking channel(s) of the central cylinder. In some embodiments, an intermediate cylinder may be disposed between the central cylinder and the collar(s). The intermediate cylinder may have slots corresponding to the rotate channel(s) of the central cylinder. When pin(s) and locking channel(s) are aligned, the central lock cylinder may move axially to lock the collars in a desired angular position (e.g., a deployed or folded configuration).

Embodiments generally relate to hinge mechanisms. Many of the hinge mechanism embodiments may be used in foldable furniture. The foldable furniture may be a foldable seat or table. The hinge mechanism may include a central cylinder with a body defining a hinge axis. The central cylinder may have rotate channel(s) transverse to the hinge axis and locking channels extending axially from the rotate channel(s). Collar(s) may couple with the central cylinder and may include pin(s) that protrude inwardly into the rotate channel(s) and locking channel(s) of the central cylinder. In some embodiments, an intermediate cylinder may be disposed between the central cylinder and the collar(s). The intermediate cylinder may have slots corresponding to the rotate channel(s) of the central cylinder. When pin(s) and locking channel(s) are aligned, the central lock cylinder may move axially to lock the collars in a desired angular position (e.g., a deployed or folded configuration).

An angle adjustable bicycle saddle contains a seat post, a cushion, and a locking unit. The seat post includes an inwardly curved groove having multiple protrusions, and the seat post includes multiple troughs. The cushion includes a body and a cap. The body has a curved holder, an arcuate abutting projection, multiple engagement portions, and multiple through holes corresponding to the multiple troughs. The cap is covered on the curved holder of the body so that the curved holder has a hollow portion. The locking unit includes multiple fixing elements and multiple stepped nuts. A respective fixing element is inserted through a respective trough and a respective through hole. A first end of a respective fixing element is adjustably received in a respective trough, and a second end of the respective fixing element is accommodated in the hollow portion of the curved holder.

An angle adjustable bicycle saddle contains a seat post, a cushion, and a locking unit. The seat post includes an inwardly curved groove having multiple protrusions, and the seat post includes multiple troughs. The cushion includes a body and a cap. The body has a curved holder, an arcuate abutting projection, multiple engagement portions, and multiple through holes corresponding to the multiple troughs. The cap is covered on the curved holder of the body so that the curved holder has a hollow portion. The locking unit includes multiple fixing elements and multiple stepped nuts. A respective fixing element is inserted through a respective trough and a respective through hole. A first end of a respective fixing element is adjustably received in a respective trough, and a second end of the respective fixing element is accommodated in the hollow portion of the curved holder.

An improved rain gutter hinge assembly uses mounting locations under an eave of building's roof to preserve integrity of fascia boards. In one embodiment, a gutter mounted to the gutter hinge assembly can be readily moved between a water collection position, a dumping position, and an under-eave storage position. The gutter can also be easily removed from the building.

An improved rain gutter hinge assembly uses mounting locations under an eave of building's roof to preserve integrity of fascia boards. In one embodiment, a gutter mounted to the gutter hinge assembly can be readily moved between a water collection position, a dumping position, and an under-eave storage position. The gutter can also be easily removed from the building.

A cross-link assembly for a dangling worktool may include a frame configured to connect to a grapple, the frame having spaced apart arms; a pin movably engaged with the spaced apart arms, the pin having an abutment portion; and a lock member movably engaged with the frame. The lock member may be configured to engage with the abutment portion and have a lock portion configured to engage with a lock element provided on the grapple.

A cross-link assembly for a dangling worktool may include a frame configured to connect to a grapple, the frame having spaced apart arms; a pin movably engaged with the spaced apart arms, the pin having an abutment portion; and a lock member movably engaged with the frame. The lock member may be configured to engage with the abutment portion and have a lock portion configured to engage with a lock element provided on the grapple.

A collapsible ski device, having: a first forward ski member having a bottom surface, a tip and a rear end; a second middle ski member having a bottom surface, a forward end and a rear end; and a third rear ski member having a bottom surface, a forward end and a tail. The forward end of the second middle ski member is pivotably coupled to the rear end of the first forward ski member by a first hinge mechanism. The first hinge mechanism has a flexible component attached at a first location to a first attachment surface on the first forward ski member and attached at a second location to a second attachment surface on the second middle ski member. The rear end of the second middle ski member is pivotably coupled to the forward end of the third rear ski member by a second hinge mechanism. The second hinge mechanism has a flexible component attached at a first location to a third attachment surface on the second middle ski member and attached at a second location to a fourth attachment surface on the third rear ski member.

A carriage having a frame, where the frame is foldable between a use position and a storage position. The frame includes an attachment point for a plurality of frame components and a pivot lock for retaining the frame in the use position. The pivot lock is operated by rotating a portion of the frame of the carriage to unlock the pivot lock, permitting the carriage to be folded to the storage position.