Assignee: MHE Technologies, Inc.

Location: Wilmington, DE
No. of patents: 25

Number	Title	Issue Date
8176611	Pin changing device and method A pin removal assembly for use with an upper block of a crane includes a sheave support and a pin support. The upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines and axis of rotation for the sheaves and supports the sheaves...	05/15/2012
7963579	Self-leveling bottom block assembly A bottom block assembly includes a block having a central vertical axis, a hook secured to the block for attaching a load to the block, a first pair of sheaves rotatably attached to the block, a first rope reeved about the first pair of sheaves, a second pair of she...	06/21/2011
7874439	Overhead crane An overhead crane adapted to be supported by at least one main support beam includes a bridge adapted to travel in a substantially horizontal direction along the at least one main support beam, a trolley adapted to travel in a substantially horizontal direction alon...	01/25/2011
7775571	Bottom block assembly with pivoting trunnion paddles A bottom block assembly for an overhead crane includes a main bottom block, an outer frame carried by the main bottom block and rotatable relative to the main bottom block about a vertical axis of rotation, and a pair of paddles carried by the outer frame and downwa...	08/17/2010
7735662	Upper block A crane having an upper block, a lower block, a drum, and two ropes. The upper block includes an equalizer having a yoke to which the ropes are connected. The connections between the ropes and the yoke include load cells that measure the forces carried by each of th...	06/15/2010
7686175	Container crane A container crane includes a container including first and second side walls spaced apart and generally parallel, a bridge adapted to travel in a substantially longitudinal direction along the first and second side walls, a trolley adapted to travel in a substantial...	03/30/2010
7611022	Upper block A crane having an upper block, a lower block, a drum, and two ropes. The upper block includes an equalizer having a yoke to which the ropes are connected. The connections between the ropes and the yoke include load cells that measure the forces carried by each of th...	11/03/2009
7597050	Crane return A crane return system is used for returning a crane component to a home position when there is a loss of power. A crane includes a bridge with a plurality of main wheels adapted to travel along at least one rail. The crane return system includes a plurality of auxil...	10/06/2009
7562430	Pin changing device and method A pin removal assembly for use with an upper block of a crane includes a sheave support and a pin support. The upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines an axis of rotation for the sheaves and supports the sheaves ...	07/21/2009
7542680	Laser control system A control system is used for remotely operating an apparatus powered by a main power source. The control system includes an auxiliary power source to provide power to the apparatus upon a loss of power to the main power source, and first and second light-emitting so...	06/02/2009
7517183	Gondola tipping system A gondola tipping system for tipping a pivotally mounted container includes a frame having a substantially horizontal beam, a trolley translatable across the beam, a winch mounted on the beam, and a lower block connectable to the pivotal container, the lower block b...	04/14/2009
7499186	Laser survey device A remotely operated laser survey device for performing a runway survey on a rail system that supports a device such as an overhead crane. The survey device includes a laser assembly and a survey car. The laser assembly can include a self-leveling laser. The survey c...	03/03/2009
7367461	Movable girder mounted jib A portable jib for movably mounting to a crane girder includes a base frame configured for traveling along a girder and a support member coupled to the base frame, wherein the support member extends substantially upward from the base frame. A boom is coupled to a fr...	05/06/2008
7309059	Hoist apparatus rope sensing device A hoist apparatus (10) including a rope sensing device (14) for detecting rope fouling events. The rope sensing device (14) includes a lever arm (74) having a first end portion (74g), a second end portion (74h)...	12/18/2007
7293670	Upper block A crane having an upper block, a lower block, a drum, and two ropes. The upper block includes an equalizer having a yoke to which the ropes are connected. The connections between the ropes and the yoke include load cells that measure the forces carried by each of th...	11/13/2007
6966544	Hoist apparatus The invention relates to a hoist apparatus including at least one of a three-part double reeved bottom block that has the same height profile as a two-part bottom block and the same lifting capacity as a three-part bottom block that includes an integral equalizer sh...	11/22/2005
6827334	Lifting arrangement for overhead traveling cranes A lifting arrangement for overhead traveling cranes. The lifting arrangement includes two single reeved drums that are reeved together to provide true vertical lift of a load. The lifting arrangement allows for equalization of full up and full down rope fleet angles...	12/07/2004
6720751	Material handling system and method of operating the same A material handling system for lifting a load and a method sensing an unstable state of the material handling system. The system includes a motor, a brake and a drive. The method includes storing a model of the motor in the drive and generating a signal in the drive...	04/13/2004
6622877	Overhead crane with adjustable bearing assemblies An overhead crane having an adjustable bearing assembly to adjust a wheel and axle of the crane in a horizontal direction in order to minimize skewing of the crane on a pair of parallel rails. A bearing retainer includes an outer surface sized to fit into...	09/23/2003
6296721	Hardened wheel A specialized induction facility provides localized heating in only the desired wear areas of a crane wheel while leaving the supporting material "as-forged" and ductile. The wear area of a crane wheel is hardened such that flanges extending out from a wo...	10/02/2001
6250484	Counterweight for monorail hoists A counterweight for a monorail hoist. The monorail hoist includes a single support beam and a suspended hoist assembly which is supported for movement along the support beam. The hoist assembly includes a support member which is transverse to the support ...	06/26/2001
6135421	Hoist with proximity limit switches A hoist apparatus comprising a frame, a hoist drum mounted on the frame for rotation about a drum axis, a motor connected to the drum for selectively rotating the drum in opposite wind-up and wind-off directions about the drum axis, a hoist rope wound aro...	10/24/2000
6030471	Method for producing a hardened wheel A specialized induction facility provides localized heating in only the desired wear areas of a crane wheel while leaving the supporting material "as-forged" and ductile. The wear area of a crane wheel is hardened such that flanges extending out from a wo...	02/29/2000
5992730	Method for assembling a trolley for an overhead traveling crane A trolley having an inner assembly and trolley sides is assembled by placing the components of the inner assembly in a welding fixture, welding the inner assembly components together, and welding the inner assembly to the trolley sides. The use of the fix...	11/30/1999
5950297	Method for mounting an object a desired distance from a support surface A support member attached to a support surface is rotated about a threaded stud to change the distance between an object on the support member and the support surface. The support member is fixed relative to the stud when the desired distance is attained,...	09/14/1999

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Assignee: MHE Technologies, Inc.