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| Number | Title | Issue Date |
| 7398859 | Mast construction for a lift truck A mast includes a base section, an outer telescopic section and an inner telescopic section which are raised and lowered by a pair of main lift cylinders. A fork carriage is slidably mounted to the inner telescopic section and is raised and lowered thereon by a pair... | 07/15/2008 |
| 7360262 | Lifting and transfer apparatus A portable lifting apparatus for lifting and transferring of heavy objects. The lifting apparatus having a load-supporting platform which can be moved both vertically and rotated about the vertical axis of an upwardly extending lifting column. The lifting apparatus ... | 04/22/2008 |
| 7255201 | Lifting frame with hydraulic lines for an accessory hydraulic system A lifting frame has a stationary vertical mast (outer mast 1), at least one telescoping lifting mast (inner mast 3), and a lifting carriage (4) movable on the lifting mast. At least one hydraulic line (5) installed on the lifting frame di... | 08/14/2007 |
| 7255202 | Truck mounted forklift with double-acting freelift mast A forklift truck for mounting on the rear of a carrying vehicle comprises a u-shaped chassis having a crossbar and a pair of side bars mounted at the ends of the crossbar and projecting forwardly therefrom. A wheel is located adjacent the free end of each of the sid... | 08/14/2007 |
| 7195105 | Lift truck A lift truck includes a guide member secured to a mast of the lift truck and a guided member secured to a carriage vertically movable along the mast. The guided member engages with the guide member to resist twisting moments acting on the carriage and enable the car... | 03/27/2007 |
| 7188709 | Extendable mast structure for a fork-lift truck An extractable mast structure for a fork-lift truck, including an outer mast fixed to the carriage, the spaced columns being interconnected via upper and lower traverses, an extractable inner mast guided by said outer mast on which a load-carrying means is guided to... | 03/13/2007 |
| 7175000 | Lifting truck with displaceable masts and balancing cylinder A lifting truck with a telescoping mast and a balancing cylinder is disclosed. The stages of the mast are each constructed with three vertical beams. A mechanism for extending the mast are contained in or near the side beams. The balancing cylinder exerts an upward ... | 02/13/2007 |
| 7121384 | Truck mast A two- or multi-stage mast-hydraulic cylinder construction (4, 5) for a truck mast, and method for manufacturing the intergrated structer (4, 5), are discloused. The fixed mast assembly has its substantially vertical beams (4, 5) and its cylinde... | 10/17/2006 |
| 7096999 | Mast construction for a lift truck A mast includes a base section, an outer telescopic section and an inner telescopic section which are raised and lowered by a pair of main lift cylinders. A fork carriage is slidably mounted to the inner telescopic section and is raised and lowered thereon by a pair... | 08/29/2006 |
| 6505710 | Mast apparatus for fork lift trucks A triple mast type, slide type full free lift mast comprises a mast combination composed of an inner mast member, a middle mast member and an outer mast member, a combination of a free lift cylinder and a lift cylinder provided for the mast combination, a... | 01/14/2003 |
| 6095286 | Personnel lift with adjustable shim wear blocks A personnel lift (20) having adjustable side-to-side shim assemblies (38a-d) used in conjunction with a series of slide blocks (39, 40) in the mast of the personnel lift. The mast of the personnel lift includes a number of nested columns (24a-e) that exte... | 08/01/2000 |
| 5850892 | Personnel lift with adjustable shim wear blocks A personnel lift (20) having adjustable side-to-side shim assemblies (38a-d) used in conjunction with a series of slide blocks (39, 40) in the mast of the personnel lift. The mast of the personnel lift includes a number of nested columns (24a-e) that exte... | 12/22/1998 |
| 5839851 | Personal watercraft lift A lift is provided for a personal watercraft and includes two relatively elongated channel members each of a generally C-shaped transverse cross-section. A carriage carrying a platform upon which the personal watercraft can be supported is mounted for sli... | 11/24/1998 |
| 5320197 | Sextuple upright An upright, particularly for a counterbalanced, high lift truck, comprising first and second telescoping dual mast sections disposed in fore and aft relationship, each section having laterally spaced outer, intermediate, and inner rails, and a load carria... | 06/14/1994 |
| 5082090 | Stacking mast for a lift truck A stacking mast for being attached to a lift truck and for moving a load between a negative position and a positive position. The stacking mast includes an elongated first mast, the first mast including a lower end for being attached to the lift truck and... | 01/21/1992 |
| 4765441 | Industrial truck, particularly high-lift truck, also as a high-lift truck having a displaceable mast An industrial truck, particularly a high-lift truck, comprising a lifting frame provided with extensible mast sections and a load-carrying carriage, is provided on the fixed mast section and, if desired, on extensible mast sections, with laterally dispose... | 08/23/1988 |
| 4635757 | Mast assembly for a forklift A forklift mast assembly for attachment to a self propelled vehicle includes a pair of outer masts horizontally spaced from each other, and a pair of inner masts disposed just inwardly of the outer masts for up and down rolling motion relative to the same... | 01/13/1987 |
| 4614253 | Mast channel member configuration of forklift truck A mast structure of a forklift truck is composed of two vertically and parallelly extending channel members each of which has front and rear flanges. The thickness of the rear flange is so larger than that of the front flange that a ratio (e1 /... | 09/30/1986 |
| 4552250 | Lift truck A lift truck having a frame and a two-stage telescopic mast in which an outer, movable mast is mounted to telescope over an inner mast which is fixed to the frame, each mast having a substantially continuous, unitary tubular body which provides superior s... | 11/12/1985 |
| 4484663 | Portable personnel platform lift A portable personnel platform lift is provided, having a base mast or section and a plurality of extendible, nesting masts or sections with a personnel platform on the upper section. The extendible sections are constructed with nesting side rails which ar... | 11/27/1984 |
| 4458785 | Lift A multistage portable lift has an arm projecting rearwardly from one of the movable lift stages and a reeving system including a cable transferring a downward counterbalancing force to the arm from a load at the front of the lift. In the preferred embodim... | 07/10/1984 |
| 4441585 | Lift mast assembly This invention relates to a lift mast assembly (10) preferably for a vehicle (34) which eliminates the problems of reduced visibility, reduced load carrying capacity for a given vehicle size and weight. The lift mast assembly has a fixed upright assembly ... | 04/10/1984 |
| 4354579 | Apparatus for guiding lift truck mast segments This is a unique mast roller as is used by lift trucks, and the like. It is characterized by a number of roller assemblies which are both removable and adjustable to compensate for variations in spacing between channel track members brought about by manuf... | 10/19/1982 |
| 4337845 | Telescopic elevator devices in particular for dollies The invention relates to a telescopic elevator device for dollies comprising in combination a wheel-mounted base member, a first extension member telescopically slidable on the base member, a second extension member telescopically mounted within the first... | 07/06/1982 |
| 4252216 | Heavy duty carriage guides The invention is concerned with an improved carriage guide and mast stiffener for a lift mast of the sort used on a lift truck or the like. Such a lift mast comprises a pair of spaced apart outer mast members, a pair of spaced apart inner mast members bet... | 02/24/1981 |
| 4155428 | Deflection constraint device for telescopic uprights A system for reducing the lateral bending moments and deflection in side loading telescopic uprights, such as for lift trucks. Hydraulic actuated restraint device is mounted between each adjacent pair of upright rails, as well as between the inner rails a... | 05/22/1979 |
| 4015686 | Portable multi-stage mechanical list A portable multi-stage lift has a winch-operated reeving system operable from ground level or from the lift carriage. The stages of the lift mast slidingly interfit front to back and each has the same cross-section shaped to be formed of a single extrusio... | 04/05/1977 |
| 3937346 | Movable stacking device A moveable stacking device having a mobile substructure which carries a tower with a fixed outer frame and an inner frame guided by the outer frame for vertical movement relative thereto. An operating platform is guided by the inner frame for vertical mov... | 02/10/1976 |
