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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7160076 | Work machine with boom stop A work machine has a lift arm assembly pivotably coupled to a frame assembly at a forward frame pivot. The lift arm assembly includes a pair of spaced-apart lift arms and an extensible lift cylinder. The lift cylinder is pivotably coupled to the lift arms at a lift ... | 01/09/2007 |
| 7111419 | Thumb for a backhoe A digging implement (10) including an extendable linkage (12) including a bucket (14) and a thumb assembly (34) for holding materials in the bucket (14). The thumb assembly (34) is configured to rotate as the linkage (12 | 09/26/2006 |
| 7056079 | Linkage assembly restraint Work machines having linkages may need to have the linkage assembly locked in a predetermined position to prevent damage to an implement attached to the work machine, to prevent tipping of the work machine, to operate the implement, or other reasons. Locking the lin... | 06/06/2006 |
| 6755604 | Wheeled shovel loader The present invention relates to a wheeled shovel loader that comprises a boom (3) capable of pivoting about an axis (4) as well as loading shovel (13) that can be actuated by a tilting structure (11, 12). According to this invention, at ... | 06/29/2004 |
| 6374153 | Apparatus and method for providing coordinated control of a work implement An apparatus and method for providing coordinated control of a work implement of a work machine. The implement includes a boom having a first end portion and a second end portion, with the first end portion pivotally connected to the frame and the second ... | 04/16/2002 |
| 6374147 | Apparatus and method for providing coordinated control of a work implement An apparatus and method for providing coordinated control of a work implement of a work machine. The implement includes a boom having a first end portion and a second end portion, with the first end portion pivotally connected to the frame and the second ... | 04/16/2002 |
| 6325591 | Device for handling objects The disclosure relates to a device for handling objects to package the same. The handling device comprises a lifting head (17) placed in an extension arm (16) having multiple levers (59, 60, 61), with ends (62, 67) placed on linear drives (63, 68) that ca... | 12/04/2001 |
| 5885050 | Working unit of construction equipment with attachment self leveling function A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the referen... | 03/23/1999 |
| 5879126 | Working unit of contruction equipment with attachment self leveling function A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the referen... | 03/09/1999 |
| 5876177 | Working unit of construction equipment with attachment self leveling function A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the referen... | 03/02/1999 |
| 5851101 | Working unit of construction equipment with attachment self leveling function A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the referen... | 12/22/1998 |
| 5688101 | Working unit of construction equipment with attachment self leveling function A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the referen... | 11/18/1997 |
| 5150999 | Bale lifter and mover Apparatus for lifting round bales of hay including a pair of arms which project forwardly from the front end of a tractor. These arms support a pivotal structure which includes a spear for impaling a round bale of hay and thereafter tilting the bale up of... | 09/29/1992 |
| 4841632 | Automatic wheel attachment apparatus An automatic wheel attachment apparatus for attaching a wheel to a wheel attachment member of an automotive body. The automatic wheel attachment apparatus includes a reorienting device for reorienting a wheel attachment surface of the wheel attachment mem... | 06/27/1989 |
| 4768917 | Loader boom mechanism A boom mechanism including a linkage which interconnects the frame of a loader with the boom arm and the loader bucket. The linkage includes a cross-shaped member having arms extending forwardly, rearwardly and laterally. The rearward arm is pivotally con... | 09/06/1988 |
| 4364705 | Loader mechanism A linkage system for automatically maintaining the orientation of a bucket of a loader while the lift arms are moved between raised and lowered positions is disclosed. A pair of articulated links are added to the linkage producing the self-leveling functi... | 12/21/1982 |
| 4345871 | High-lift attachment for an agricultural tractor provided with a three-point linkage A high-lift attachment for a tractor provided with a three-point linkage comprises a platform provided with a vertical backing frame, and a vertical intermediate frame positioned between the backing frame and the tractor body. The intermediate frame is co... | 08/24/1982 |
| 4260320 | Safety device for a front end type loader vehicle A self-propelled vehicle includes a vehicle body having a forwardly facing operator's compartment or cab. The vehicle is provided with a front end implement which is controlled by vertically swingable lift arms that extend along the sides of the operator'... | 04/07/1981 |
| 4189278 | Boom prop A boom prop for supporting in an elevated position a pair of boom arms interconnected by a cross tube, including a link pivotally mounted on a vehicle with a saddle member secured to its free end capable of engaging and supporting the cross tube. An adjus... | 02/19/1980 |
| 4162872 | Lift arm assembly A low-profile front end loader vehicle has the bucket located as close to the front wheels as is possible without sacrificing strength and maneuverability. The lift arms are shortened and reshaped in the midportion to lower the low position of the lift ar... | 07/31/1979 |
| 4141257 | Safety latch for tractor loader A safety latch mechanism for use with a tractor loader of the type including a pair of bucket supporting lift arms rigidly interconnected by a cross member. The latch mechanism includes a link pivoted at one end to the forward end of the loader frame and ... | 02/27/1979 |
| 4109807 | Support for loader lift arm A support for lift arms of a tractor mounted loader comprising a tractor frame, lift arms for supporting a loader bucket, said lift arms being pivotally mounted to said frame of the tractor, a pin embedded in said lift arm, and a link pivotally mounted to... | 08/29/1978 |
| 4054216 | Apparatus for controlling bucket in tractor mounted loader An apparatus for controlling bucket in tractor mounted loader, characterized in that a reach lever is pivoted to the body of tractor so as to be swingable in the forward and backward directions; a lift arm is pivoted to the free end of said reach lever so... | 10/18/1977 |
| 4053075 | High lift mounting means for loader buckets A loader comprises means mounting a loader bucket thereon for selectively moving the bucket substantially vertically between lowered and raised positions thereof. Such mounting means comprises first, second and third pairs of lift arms pivotally interconn... | 10/11/1977 |
| 4043253 | Boom cylinder stop for the lift cylinders of a skid steer vehicle A boom stop having a elongated tubular body portion is mounted on the rod end of one of the hydraulic lift cylinders of a skid steer loader. When the boom of the skid steer loader is lifted, the boom stop is carried outwardly with the rod end of the cylin... | 08/23/1977 |
| 4039093 | Boom arm support lock A boom arm safety lock including a pivotally-mounted boom arm and a fluid cylinder assembly for pivoting the arm up and down. A lock bar is pivotally mounted adjacent the boom arm for upwardly supporting the boom arm in the event the fluid in the cylinder... | 08/02/1977 |
| 4029226 | Linkage support system for material handling unit A linkage system for pivotally supporting a boom on a vehicle body with a material handling unit pivoted on the outer end of the boom through a unit fluid ram is disclosed herein. The linkage system consists of an arm that is supported for pivotal movemen... | 06/14/1977 |
| 4006834 | Tilt linkage for loader buckets A loader comprises a tractor having a pair of laterally spaced lift arms pivotally mounted thereon and a loader bucket pivotally mounted on forward ends of the lift arms. A cross brace is secured between the lift arms and has at least one bellcrank of a t... | 02/08/1977 |
| 3995761 | Anti-lowering device for a boom loader In a loader having a boom structure that reciprocates along its sidewalls, at least one stop member, having a cam surface and an abutment surface, is disposed at a predetermined height adjacent one of the sidewalls and operative between first and second p... | 12/07/1976 |
| 3982648 | Lift arm safety bar Safety bar for maintaining a piston rod in an extended position with respect to its cylinder. The rod-and-cylinder function as the hydraulic actuator for the lift arm in a front-end crawler-loader, and are connected at the rod end to the loader lift arm a... | 09/28/1976 |
| 3966070 | Mechanism for loader bucket or forklift mast on a material handling vehicle A mechanism on a material handling vehicle having means for interchangeably connecting an attachment to operate as a front end loader or a forklift with an extendable mast for loading and handling of material. The mechanism includes a quadrilateral linkag... | 06/29/1976 |
