| Patent Number |
Title Of Patent |
Date Issued |
| 7056078 |
Hydraulically-synchronized clamp for handling stacked loads different sizes |
June 6, 2006 |
| A clamp for handling stacked loads of different sizes has a hydraulic circuit capable of selectively causing closing movement of a pair of clamp arms in synchronized unison with each other and thereafter, automatically in response to resistance to closing movement by one but not the |
| 7018159 |
Adaptive load-clamping system |
March 28, 2006 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 7008167 |
Fork positioner for facilitating replacement of forks on lift trucks |
March 7, 2006 |
| A fork positioner for a forklift truck has power-actuated yokes, each having a base from which a pair of transversely spaced legs depend, for engaging respective load lifting forks and adjusting their spacing transversely along a fork-supporting member. Each of the yokes is selective |
| 6843636 |
Adaptive load-clamping system |
January 18, 2005 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 6672823 |
Fork positioner for facilitating replacement of forks on lift trucks |
January 6, 2004 |
| A fork positioner for a forklift truck has power-actuated yokes, each having a base from which a pair of transversely spaced legs depend, for engaging respective load lifting forks and adjusting their spacing transversely along a fork-supporting member. Each of the yokes is selective |
| 6572082 |
Railway boxcar door operating unit |
June 3, 2003 |
| A door operating apparatus is provided for safely and efficiently opening and/or closing a side door of a railway boxcar by moving a door engagement member laterally. |
| 6454511 |
Adaptive load-clamping system |
September 24, 2002 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 6439826 |
Adaptive load-clamping system |
August 27, 2002 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 6431816 |
Adaptive load-clamping system |
August 13, 2002 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 6390763 |
Lift truck carriage with improved sideshifter |
May 21, 2002 |
| A lift truck sideshifting carriage has an upper transverse slide guide with an upwardly-protruding first lip for slidably supporting an upper transversely-extending slide of a sideshifting frame. The sideshifting frame has a second upwardly-protruding lip for supporting the load-hand |
| 6390751 |
Adaptive load-clamping system |
May 21, 2002 |
| A fluid power load-clamping system includes at least one fluid valve for variably regulating the maximum fluid pressure causing closure of the clamp. Preferably the valve increases the maximum fluid pressure automatically in relation to the measured magnitude of the weight of the loa |
| 6318949 |
Clamp for handling stacked loads of different sizes |
November 20, 2001 |
| A lift truck clamp for handling stacked loads of different sizes has a pair of opposing clamping assemblies, one of which has a pair of clamp arms movable selectively toward and away from the other clamping assembly under the control of a pair of fluid power actuators. A linkage mechanis |
| 6135704 |
Layer-picking clamp supported on a forklift truck |
October 24, 2000 |
| A layer-picking clamp mountable on a truck has clamp arms extending downwardly from and movably mounted to an upper frame section. The clamp arms are linearly movable with respect to the upper frame section in laterally inward and outward directions so that gripping surfaces of the c |
| 5984617 |
Clamp for handling stacked loads of different sizes at different maximum clamping forces |
November 16, 1999 |
| A load clamp has two selectively openable and closable opposing clamping assemblies, one of which comprises at least a pair of clamp arms movable separately from each other toward and away from the other clamping assembly. Separate actuators for the respective clamp arms are controlled |
| 5927932 |
Clamp assembly with automatic rotation control |
July 27, 1999 |
| A rotatable load-handling clamp assembly has a rotation-stopping triggering assembly for automatically stopping clamp rotation at one or more predetermined stop positions. A hydraulic motor rotates a rotatable frame having clamp arms thereon with respect to a base. A hydraulic motor |
| 5417464 |
Slip-correcting load-clamping system |
May 23, 1995 |
| A load is gripped between a pair of load-engaging surfaces while the magnitude of any slippage between the load and the surfaces is variably sensed. A slip-correcting system variably predetermines an increase in the grip sufficient at least to decelerate the sensed magnitude of slippage, |
| 5336039 |
Lift truck parallel arm clamp for compatibly maximizing operator visibility and load-carrying ca |
August 9, 1994 |
| A load-handling parallel arm clamp structure for a lift truck comprises a slide guide frame having respective upper and lower pairs of elongate, parallel, vertically-spaced transverse slide guides with load-arm supporting slide members longitudinally movable thereon alternatively tow |
| 5096363 |
Multiple-pair fork positioner |
March 17, 1992 |
| A lift truck fork positioner for respective inner and outer pairs of load-handling forks includes power actuators for selectively extending and retracting the outer pair of forks and latch assemblies for selectively detachably connecting an inner fork fixedly to a respective adjacent out |
| 4927320 |
Automatic load push-pull slipsheet handler |
May 22, 1990 |
| A load push-pull slipsheet handler is disclosed having automatic features adapting it particularly for use with driverless, automatically-guided vehicles. These features include proximity sensors which sense the distance between the slipsheet handler and a vertically-oriented external |
| 4902190 |
Fork positioning attachment for lift trucks |
February 20, 1990 |
| A fork positioner is mounted on a side-shifting carriage of a forklift truck and has transversely-movable, powered yoke assemblies for detachably engaging the upstanding portions of the forks and selectively moving them transversely toward and away from each other while they are supporte |
| 4861223 |
Automatic load push-pull slipsheet handler |
August 29, 1989 |
| A load push-pull slipsheet handler is disclosed having automatic features adapting it particularly for use with driverless, automatically-guided vehicles. These features include proximity sensors which sense the distance between the slipsheet handler and a vertically-oriented external |
| 4782920 |
Load-lifting mast especially adapted for use with automatically-guided vehicles |
November 8, 1988 |
| A load-lifting mast especially adapted for an automatically-guided, driverless vehicle has automatic features for ensuring accuracy and reliability of operation despite the absence of a driver. For load-lowering purposes, a slack chain sensor senses whether or not the load-supporting |
| 4752179 |
Push-pull load handler for forklift truck |
June 21, 1988 |
| A push-pull slipsheet handler for a forklift truck is capable of utilizing the truck's standard forks for load-supporting purposes, while enabling mounting and demounting of the push-pull assembly and forks in unison with respect to the lift truck carriage. The upstanding portions of the |
| 4726729 |
Electric motor-actuated load clamp with clamping force control |
February 23, 1988 |
| An electric motor-actuated load clamp for automatically-guided vehicles has clamp arms which are selectively opened and closed by a plurality of rotary electric motors connected to the clamp arms by ball screws. Clamping force is accurately controlled by regulation of current to the |
| 4714399 |
Automatically-guided vehicle having load clamp |
December 22, 1987 |
| An automatically-guided, driverless vehicle for handling loads has a selectively openable and closeable load clamp. The clamp is equipped with various sensors for automatically sensing the load and other objects and surfaces surrounding the load, and controlling the movement of the clamp |
| 4708575 |
Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipshee |
November 24, 1987 |
| A push-pull slipsheet handler mountable on a standard hook-type lift truck carriage compatibly with load-handling forks mounted on the carriage. The slipsheet handler comprises a push-pull assembly and split platen, both of which receive their vertical support from the load-supporting su |
| 4699565 |
Lift truck load-handling attachment having vertically-slidable quick-disconnect hook |
October 13, 1987 |
| A lift truck load handling attachment having a quick-disconnect hook assembly for quick mounting or demounting of the attachment on a lift truck carriage. The hook assembly comprises a hook mounting member fastened to the rearwardly-facing surface of the frame of the load-handling at |
| 4682931 |
Lift truck clamp for handling stacked loads of different sizes |
July 28, 1987 |
| A load clamp has two selectively openable and closable opposing clamping assemblies, one of which comprises at least a pair of clamp arms movable separately from each other toward and away from the other clamping assembly. Separate actuators for the respective clamp arms are controlled |
| 4624620 |
Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipshee |
November 25, 1986 |
| A push-pull slipsheet handler mountable on a standard hook-type lift truck carriage compatibly with load-handling forks mounted on the carriage. The slip-sheet handler comprises a push-pull assembly and split platen, both of which receive their vertical support from the load-supporting s |
| 4605255 |
Load clamp having motor-powered screw-type clamping actuator capable of accurate positioning and |
August 12, 1986 |
| A carton clamp having a frame adapted to be mounted on a materials-handling machine, especially an automatically guided vehicle, includes clamp arms coupled directly together, independently of the frame, by motor-driven screw-type linear actuators which selectively open and close the arm |
| 4487218 |
Line take-up assembly for a lift truck |
December 11, 1984 |
| A take-up assembly for storing and selectively feeding and taking up flexible line, usually hydraulic hoses, extending between the body or mast of a lift truck and the vertically-reciprocating load carriage of the truck. The take-up assembly includes disassembly features for facilitating |
| 4482286 |
Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipshee |
November 13, 1984 |
| A push-pull slipsheet handler mountable on a standard hook-type lift truck carriage compatibly with load-handling forks mounted on the carriage. The slipsheet handler comprises a push-pull assembly and split platen, both of which receive their vertical support from the load-supporting su |
| 4435119 |
Lift truck load clamp having power-actuated pivotal subframe for handling paper rolls |
March 6, 1984 |
| A lift truck rotatable paper roll handling clamp of the pivoted arm type for clamping paper rolls of varying diameters and shifting the position of the roll relative to the lift truck between a position of unequal extension, wherein the forward end of one clamp arm extends a greater |
| 4435117 |
Lift truck paper roll clamp having automatically adjustable roll of different diameters |
March 6, 1984 |
| A lift truck load clamp, for handling cylindrical loads such as paper rolls, having an automatically adjustable load positioner extending between the clamp arms which moves forwardly in response to closure of the clamp arms and rearwardly in response to opening thereof to assist the |
| 4406575 |
Quick-mount side shifter for use on a forklift truck |
September 27, 1983 |
| A side shifter having a quick-mounting anchor bracket for mounting on a conventional hook-type lift truck carriage without the need for welding of any side shifter components, such as a hydraulic ram anchor, to the lift truck carriage. The side shifter features alternative upper and lowe |
| 4337692 |
Fluid cylinder assembly having minimized outside diameter |
July 6, 1982 |
| A fluid cylinder assembly comprising a cylindrical shell and movable plunger member having an annular retainer internally threaded into one end of the shell so as to limit the extensibility of the plunger from the shell, such annular retainer being specially designed so as to enable the |
| 4297070 |
Apparatus for automatically depositing a load in a predetermined position |
October 27, 1981 |
| An apparatus for a lift truck, of the type equipped with a push frame, for extending the push frame at a predetermined speed of extension with respect to the lift truck while simultaneously causing the lift truck to move rearwardly at a predetermined reverse speed equal to the speed of |
| 4284384 |
Apparatus for automatically depositing a load in a predetermined position |
August 18, 1981 |
| An apparatus for a lift truck, of the type equipped with a push frame, for extending the push frame at a predetermined speed of extension with respect to the lift truck while simultaneously causing the lift truck to move rearwardly at a predetermined reverse speed equal to the speed of |
| 4279564 |
Parallel arm clamp having improved attaching assembly for narrow clamp arms |
July 21, 1981 |
| A parallel arm clamp assembly having longitudinally-movable elongate slide members mountable transversely on the front of a lift truck and attaching members for connecting relatively narrow opposing clamp arms to the ends of the slide members so as to extend perpendicular thereto. Each s |
| 4274794 |
Lift truck having rotatable platen for handling unpalletized loads and method for using same |
June 23, 1981 |
| A mobile lift truck for handling unpalletized loads comprising a tiltable load-carrying platform projecting forwardly from the main frame of the truck rotatably mounted so as to permit rotation of the platform about a generally vertical axis of rotation between respective rotatable posit |
| 4261438 |
Lift truck mast having high visibility and extensibility |
April 14, 1981 |
| An extensible-contractible four-stage telescopic mast for a lift truck having a single fluid-actuated ram of low-collapsed height for high visibility which accomplishes both free lift and mast extension. The associated chain reeving of the mast provides a lesser ratio of load carriag |
| 4238004 |
Hidden chain assembly for lift truck mast |
December 9, 1980 |
| A hidden chain assembly adaptable for use in multi-stage telescopic masts for lift trucks. A lifting chain is positioned transversely between two juxtaposed elongate upright members within an elongate enclosure defined by transversely-extending longitudinal flanges of the upright members |
| 4230434 |
Lift truck load-handling attachment having integral quick-disconnect hook |
October 28, 1980 |
| A lift truck load-handling attachment having an integral quick-disconnect hook for permitting quick mounting or demounting of the attachment on a lift truck carriage. The hook comprises a lug for engaging the lower attachment mounting bar of the lift truck carriage, the lug being per |
| 4227850 |
Lift truck load clamp for handling paper rolls |
October 14, 1980 |
| A paper roll-handling clamp for lift trucks of the pivoted arm type. The pivoting movement of the clamp arms with respect to one another to perform the clamping function is accomplished by use of a generally forwardly extending, selectively extensible and retractible multi-stage telescop |
| 4224657 |
Light assembly for positioning lift truck load-handling device |
September 23, 1980 |
| A light assembly specially mounted upon a lift truck load carriage at a position adjacent the bottom thereof and rearwardly of the forward end a load fork or other similar forwardly-extending load-engaging member, for forwardly projecting a shadow of the load-engaging member to aid the l |
| 4221526 |
Walkie low-lift truck with tiltable platen and rearwardly foldable load-supporting wheel struts |
September 9, 1980 |
| A walkie low-lift truck with tiltable platen having improved stability and tilting characteristics. The truck comprises a main frame, on which are mounted a drive-steer wheel and motorized propulsion means, and a tiltable load-supporting frame connected to the front of the main frame and |
| 4209280 |
Lift truck load clamp having nonresilient contact pad surfaces textured for directionally variab |
June 24, 1980 |
| A load-handling clamp for lift trucks having load-engaging, nonresilient contact pad surfaces specially textured for resisting slippage of the load variably depending on direction of slip. Each load-engaging surface of the contact pads is constructed of a nonresilient material, preferabl |
| 4205938 |
Push-pull assembly for lift trucks |
June 3, 1980 |
| A load push-pull assembly for a lift truck having a main frame and a tiltable load-supporting frame. The push-pull assembly comprises a push frame connected by a selectively extensible and retractable linkage to a rear mounting frame which does not tilt in unison with the tiltable lo |
| 4191276 |
High-visibility two-stage mast assembly for lift trucks |
March 4, 1980 |
| A high visibility telescopic mast assembly for lift trucks having a pair of mutually reciprocable mast sections, a load carriage movably mounted thereon and a fluid actuated extensible-contractable fluid ram assembly for selectively lifting the load carriage and one of the mast sections |
| 4191092 |
Telescopic ram |
March 4, 1980 |
| A three-stage, four-section telescopic ram employing a plurality of internal fluid passages, with valving provided in certain of these passages, to produce a uniform overall extension speed when pressure fluid is supplied to the ram at a substantially constant rate. |
