The virtual presentation technology in this invention can significantly reduce data load on a network and thus reduce the network bandwidth requirement. This allows serving more requests for data transaction over a network with fixed network bandwidth. In addition, with traditional Internet file sharing products, e.g. the then-existed Yahoo Group online service, in order to stop sharing a file, the file must be physically deleted that prevents resharing the file unless expensively recreating them. In addition, traditional email and instant message does not allow a user to delete a previously posted or shared message from a UI of a recipient. Therefore, the user could be embarrassed if the posted message is not proper to the recipient. This invention has overcome the problems to allow user instantly deleting posted information of file or folder from recipient's UI without physically deleting the file, and deleting previously posted messages from recipient's UI.

The virtual presentation technology in this invention can significantly reduce data load on a network and thus reduce the network bandwidth requirement. This allows serving more requests for data transaction over a network with fixed network bandwidth. In addition, with traditional Internet file sharing products, e.g. the then-existed Yahoo Group online service, in order to stop sharing a file, the file must be physically deleted that prevents resharing the file unless expensively recreating them. In addition, traditional email and instant message does not allow a user to delete a previously posted or shared message from a UI of a recipient. Therefore, the user could be embarrassed if the posted message is not proper to the recipient. This invention has overcome the problems to allow user instantly deleting posted information of file or folder from recipient's UI without physically deleting the file, and deleting previously posted messages from recipient's UI.

The virtual presentation technology in this invention can significantly reduce data load on a network and thus reduce the network bandwidth requirement. This allows serving more requests for data transaction over a network with fixed network bandwidth. In addition, with traditional Internet file sharing products, e.g. the then-existed Yahoo Group online service, in order to stop sharing a file, the file must be physically deleted that prevents resharing the file unless expensively recreating them. In addition, traditional email and instant message does not allow a user to delete a previously posted or shared message from a UI of a recipient. Therefore, the user could be embarrassed if the posted message is not proper to the recipient. This invention has overcome the problems to allow user instantly deleting posted information of file or folder from recipient's UI without physically deleting the file, and deleting previously posted messages from recipient's UI.

A four cable operated scissors grab, comprising a pair of scissor levers that are connected via a pivot joint to pivot about a pivoting axis, which scissor levers each include a grab shell and a hoist cable connection situated on a first side of the lever with respect to the pivot joint, and a closing cable connection situated on a second side of the lever that is opposite with respect to the pivot joint, so that in use a dedicated hoisting cable is fastened to each lever on the first side of the lever, and a dedicated closing cable is fastened to each lever at the second side of the lever. The scissor levers each include a sheave on the second side of the lever, and said sheaves are each arranged as a first and final closing sheave, so that in use each of the two closing cables extend in a single pass from a closing cable connection on the second side of one lever via the closing sheave on the second side of the other lever to depart from the grab and continue upward to a crane carrying the grab.

A four cable operated scissors grab, comprising a pair of scissor levers that are connected via a pivot joint to pivot about a pivoting axis, which scissor levers each include a grab shell and a hoist cable connection situated on a first side of the lever with respect to the pivot joint, and a closing cable connection situated on a second side of the lever that is opposite with respect to the pivot joint, so that in use a dedicated hoisting cable is fastened to each lever on the first side of the lever, and a dedicated closing cable is fastened to each lever at the second side of the lever. The scissor levers each include a sheave on the second side of the lever, and said sheaves are each arranged as a first and final closing sheave, so that in use each of the two closing cables extend in a single pass from a closing cable connection on the second side of one lever via the closing sheave on the second side of the other lever to depart from the grab and continue upward to a crane carrying the grab.

A crop bucket having an aux-bail release mechanism wherein movement of the chains is restrained such that an auxiliary hook actuating the release mechanism can do so in a smooth and controlled manner from a variety of angles and positions, while reducing or eliminating bucket roll from offset pulling. The release mechanism can include a carriage configured to translate along at least a portion of a mast and operatively connected to first and second clamshell portions such that movement of the carriage away results in rotation of the clamshell portions toward the open position.

A crop bucket having an aux-bail release mechanism wherein movement of the chains is restrained such that an auxiliary hook actuating the release mechanism can do so in a smooth and controlled manner from a variety of angles and positions, while reducing or eliminating bucket roll from offset pulling. The release mechanism can include a carriage configured to translate along at least a portion of a mast and operatively connected to first and second clamshell portions such that movement of the carriage away results in rotation of the clamshell portions toward the open position.

Fast, volume, and secure information exchange is important in enhancing the efficiency of a communication network at Internet era. Video sharing in online meeting is an important part of information exchanging between people in business and in daily personal life. Video sharing between two or more user devices through a server on the Internet usually will consume tremendous network bandwidth and computing power. Therefore, there is needs to enhance the efficiency for the video sharing. With the supporting of posting and un-posting operations and the dynamic workspace technology introduced in this invention, a server here can centrally coordinate the dynamic secure video sharing between two or more devices while avoiding itself being a bottleneck for the video sharing. In addition, there is need for enhancing security for the online meeting. The method of effectively tracking activities for meeting participants during the online meeting disclosed in this invention can enhance the security for the online meeting.

Fast, volume, and secure information exchange is important in enhancing the efficiency of a communication network at Internet era. Video sharing in online meeting is an important part of information exchanging between people in business and in daily personal life. Video sharing between two or more user devices through a server on the Internet usually will consume tremendous network bandwidth and computing power. Therefore, there is needs to enhance the efficiency for the video sharing. With the supporting of posting and un-posting operations and the dynamic workspace technology introduced in this invention, a server here can centrally coordinate the dynamic secure video sharing between two or more devices while avoiding itself being a bottleneck for the video sharing. In addition, there is need for enhancing security for the online meeting. The method of effectively tracking activities for meeting participants during the online meeting disclosed in this invention can enhance the security for the online meeting.

A power bucket having a first and second bucket half pivotally secured together about a main axis by a pivot pin. The bucket halves are movable between an open and a closed position. A head is disposed above the bucket halves and at least one arm pivotally connects the head to one bucket half while at least one second arm is pivotally connected between the head and the other bucket half. A cylinder support is pivotally mounted to the pivot pin and one end of a hydraulic cylinder is attached to the pivot support. The other end of the cylinder is attached to the bucket. Upon actuation of the cylinders, the cylinders move the bucket halves so that a cutting edge of the bucket half moves in a substantially horizontal plane.