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 construction equipment accessory can include a construction equipment attachment portion, which can include a mechanical interface, a hydraulic interface, and a center section coupled to the mechanical interface, first and second support arms pivotably coupled to the construction equipment attachment portion's center section, and first and second finger grapples. The first and second finger grapples can each include two or more opposing fingers and can be hydraulically movable between open and closed positions. By attaching the construction equipment accessory to construction equipment with the construction equipment attachment portion, an operator can move elongate objects such as pipes, poles, and erosion control products.

A construction equipment accessory can include a construction equipment attachment portion, which can include a mechanical interface, a hydraulic interface, and a center section coupled to the mechanical interface, first and second support arms pivotably coupled to the construction equipment attachment portion's center section, and first and second finger grapples. The first and second finger grapples can each include two or more opposing fingers and can be hydraulically movable between open and closed positions. By attaching the construction equipment accessory to construction equipment with the construction equipment attachment portion, an operator can move elongate objects such as pipes, poles, and erosion control products.

A rotation control system may be provided for a material handling machine. The rotation control system may include a boom and a work tool attached to the boom. A swing motor may be capable of swinging the boom and the work tool. A work tool motor may be capable of rotating the work tool relative to the boom. An input device may generate a first signal indicative of a desired swinging of the boom and a second signal indicative of a desired rotation of the work tool. A controller may be in communication with the input device, the swing motor, and the work tool motor. The controller may be capable of actuating the work tool motor based only on the second signal during a first mode of operation and may be capable of actuating the work tool motor based on swinging of the boom during a second mode of operation.

A construction equipment accessory can include a construction equipment attachment portion, which can include a mechanical interface, a hydraulic interface, and a center section coupled to the mechanical interface, first and second support arms pivotably coupled to the construction equipment attachment portion's center section, and first and second finger grapples. The first and second finger grapples can each include two or more opposing fingers and can be hydraulically movable between open and closed positions. By attaching the construction equipment accessory to construction equipment with the construction equipment attachment portion, an operator can move elongate objects such as pipes, poles, and erosion control products.

A construction equipment accessory can include a construction equipment attachment portion, which can include a mechanical interface, a hydraulic interface, and a center section coupled to the mechanical interface, first and second support arms pivotably coupled to the construction equipment attachment portion's center section, and first and second finger grapples. The first and second finger grapples can each include two or more opposing fingers and can be hydraulically movable between open and closed positions. By attaching the construction equipment accessory to construction equipment with the construction equipment attachment portion, an operator can move elongate objects such as pipes, poles, and erosion control products.

A grapple for handling logs includes a base portion connectable to a working machine portion and at least one tine connected to the base portion. The at least one tine has a protruding length from the base portion. The grapple further includes a catch arm pivotably arranged relative to the base portion. The grapple can assume configurations with different protruding lengths of the at least one tine.

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 grapple assembly configured to be combined with a prime mover vehicle. The grapple assembly has a first tine configured to rotate relative to a second tine. The first tine is held in a first position by a force limiting device during normal operation. This force limiting device is movable between an operational position and a tripped position, and is biased in the operational position. The force limiting device has a pressure relief valve which opens to allow fluid to flow in a first direction when fluid pressure on the relief valve reaches a predetermined amount. The force limiting device is combined with the first tine so movement of the force limiting device from the operational position to the tripped position causes the first tine to rotate relative from the second tine thereby relieving forces generated by the prime mover's hydraulic system.

Group online communication and collaboration has become part of people's daily life. Therefore, it is critical to provide a meeting initiator to efficiently present his/her information, and control his/her presented information. It is also critical for the speed and efficiently to process the meeting initiator's requests for his/her presented information to be quickly reaching to other meeting participants during a meeting. This invention facilitates a unique user interface (UI) for the meeting initiator to efficiently present information and to control presented information through a unique withdrawing (un-post) operation. Specially, this invention deploys dynamic workspaces technology together with post and un-post (withdraw) operations that greatly improves the speed and efficiency for processing the meeting initiator's requests and for monetizing the meeting activities.