Abstract: An apparatus for handling pipes in a derrick and racking the pipes on a pipe racking assembly mounted on the derrick is provided to improve the stability of transferring pipes during a round trip operation.

Abstract: The invention provides a light transport vehicle useful for transporting children and cargo. The transport vehicle may be used as a bicycle trailer, a stroller, a jogger, a sled or other configuration and may be convertible therebetween. The transport vehicle comprising: a folding mechanism allowing the transport vehicle to easily folds into compact size, a hitch for connecting to a bicycle, an adjustable suspension system for a smoother ride for the occupants and cargo, and an attachment receiver to accept conversion attachments.

Abstract: An apparatus for handling pipes in a derrick and racking the pipes on a pipe racking assembly mounted on the derrick is provided to improve the stability of transferring pipes during a round trip operation.

Abstract: A child carrier frame includes a lower frame, an upper frame and a frame support. The frame may be adjusted between an upright position, for use, and a folded position. During folding, the carrier frame may be adjusted both to reduce its height and its width, such that a folded size is obtained that is smaller in at least two dimensions than a similar carrier frame folded to reduce only one of its height and width.

Abstract: A passenger carrier frame of the invention includes a lower frame member, a folding frame member, a back frame member and a frame folding control. These frame members are pivotally connected adjacent their ends to form a triangular arrangement in side view. The pivotal connections permit the frame to be folded and the frame folding control acts at a selected one of the pivotal connections to drive and lock pivotal rotation at that pivotal connection.

Abstract: A bicycle trailer hitch for securing a trailer to a bicycle, the trailer including a hitch arm and the bicycle having a rear wheel including an axle with an axis of rotation and a frame, the bicycle trailer hitch comprising: a hitch ball including a base end connectable to the trailer hitch arm, an opposite end formed as a ball end and a intermediate portion extending therebetween; and a bicycle-mounted hitch portion mountable on the bicycle and including a socket formed to removably retain the ball end of the hitch ball, the socket including an open end, sized to permit the ball end of the hitch ball to pass therethrough and a retainer end formed to retain the ball end therein, the open end being positioned at the forward end of the socket and the retainer end positioned at the rear of the socket such that the ball end is retained in the retainer end when the hitch arm of the trailer is extending out from the hitch behind the bicycle.

Abstract: A child carrier frame includes a lower frame, an upper frame and a frame support. The frame may be adjusted between an upright position, for use, and a folded position. During folding, the carrier frame may be adjusted both to reduce its height and its width, such that a folded size is obtained that is smaller in at least two dimensions than a similar carrier frame folded to reduce only one of its height and width.

Abstract: A bicycle trailer hitch for securing a trailer to a bicycle, the trailer including a hitch arm and the bicycle having a rear wheel including an axle with an axis of rotation and a frame, the bicycle trailer hitch comprising: a hitch ball including a base end connectable to the trailer hitch arm, an opposite end formed as a ball end and a intermediate portion extending therebetween; and a bicycle-mounted hitch portion mountable on the bicycle and including a socket formed to removably retain the ball end of the hitch ball, the socket including an open end, sized to permit the ball end of the hitch ball to pass therethrough and a retainer end formed to retain the ball end therein, the open end being positioned at the forward end of the socket and the retainer end positioned at the rear of the socket such that the ball end is retained in the retainer end when the hitch arm of the trailer is extending out from the hitch behind the bicycle.

Abstract: A cargo carrier suspension for installation on a cargo carrier having a seat and wheels, skis or rollers on which the seat rides, the cargo carrier suspension comprising: a leaf spring connectable on a cargo carrier between the seat and the wheels, skis or rollers, and a clamping device for engagement on the leaf spring and adjustable to select the degree of flexibility of the leaf spring.

Abstract: A passenger carrier frame of the invention includes a lower frame member, a folding frame member, a back frame member and a frame folding control. These frame members are pivotally connected adjacent their ends to form a triangular arrangement in side view. The pivotal connections permit the frame to be folded and the frame folding control acts at a selected one of the pivotal connections to drive and lock pivotal rotation at that pivotal connection.

Abstract: A bicycle trailer hitch for securing a trailer to a bicycle, the trailer including a hitch arm and the bicycle having a rear wheel including an axle with an axis of rotation and a frame, the bicycle trailer hitch comprising: a hitch ball including a connector end connectable to the trailer hitch arm, an opposite end formed as a ball and a intermediate portion extending therebetween; and a bicycle-mounted hitch portion including a plate having an aperture extending therethrough, the plate being mountable on the axle of the rear wheel of the bicycle with the axle extending through and rotatable within the aperture and a socket connected to the plate and formed to removably retain the ball of the hitch ball.

Abstract: A cargo carrier suspension for installation on a cargo carrier having a seat and a transport means on which the seat rides, the cargo carrier suspension comprising: a leaf spring connectable on a cargo carrier between the seat and the transport means; and a clamping device for engagement on the leaf spring and adjustable to select the degree of flexibility of the leaf spring.

Abstract: A bicycle trailer hitch for securing a trailer to a bicycle, the trailer including a hitch arm and the bicycle having a rear wheel including an axle with an axis of rotation and a frame, the bicycle trailer hitch comprising: a hitch ball including a connector end connectable to the trailer hitch arm, an opposite end formed as a ball and a intermediate portion extending therebetween; and a bicycle-mounted hitch portion including a plate having an aperture extending therethrough, the plate being mountable on the axle of the rear wheel of the bicycle with the axle extending through and rotatable within the aperture and a socket connected to the plate and formed to removably retain the ball of the hitch ball.