An automatic locking mechanism can include one or more annular elements having teeth facing each other or facing away from each other. The automatic locking mechanism can include a rod disposed between the annular elements. The rod can have one or more pins configured to interface with the teeth of the annular elements. The pins and the teeth are also configured to rotate the rod when the annular elements move relative to the rod. The rotation of the rod can toggle a hook end of the rod in a hook receptacle, which can change states of the locking mechanism.

A method for lifting an inner wear part of a gyratory or cone crusher and an inner wear part lifting tool for use with the method. The gyratory or cone crusher has a frame, an outer wear part fixable to the frame and the inner wear part fixable to a support cone of the crusher which outer and inner wear part define a crushing chamber. The inner wear part has an inner surface including a first inner support surface arranged, in a crushing phase, to be supported by a first counter surface of the support cone. In a first phase, a lifting arm of a lifting tool is arranged inside the inner wear part and under the inner surface of the inner wear part. In a second phase, an upper second counter surface of the lifting arm is coupled with a second inner support surface of the inner wear part.

In one aspect there is provided a pipe spinner and lifter for supporting and rotating a cylindrical member having a longitudinal axis. The pipe spinner and lifter comprises a pair of jaws that pivot about a pivot member, to allow the pipe spinner and lifter to actuate between an open configuration and a closed configuration. A plurality of rollers are mounted on the jaws, each rotatable about a rolling axis. When the pipe spinner and lifter is in the closed configuration, the cylindrical member can be rotatably captured by the pipe spinner and lifter, allowing the cylindrical member to rotate about its longitudinal axis. Preferably, the plurality of rollers are arranged in a substantially mirrored arrangement on the jaws. More preferably, the rolling axis of each of the rollers is substantially parallel to the cylindrical member's longitudinal axis.

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.

The present invention relates to a device for storing tires, particularly large tires, said tire storage device comprising a plurality of storage niches (10) and at least one elevator disposed in a front portion (31) of the device and engaging the plurality of storage niches (10), each storage niche (10) consisting of an inclined upper platform (II), a lower inclined platform (12), and a connecting platform (13) associating the upper platform (11) with the lower platform (12), the upper platform (11) comprising an inlet end of the tire (111) engaging the elevator and a second end (112) opposite the inlet end of the tire (III) engaging the connecting platform (13), the lower platform (12) comprising a first end (121) engaging the connecting platform and an outlet end of the tire (122) opposite the first end (121).

A method for posting and un-posting files and messages in a collaborative file sharing environment. A user is provided with the functionality of instantly stop sharing files or folders without physically deleting the files or folder.

A clamping assembly is disclosed including a plurality of tines each pivotally coupled to a spreader having first ends above the spreader and second ends below the spreader. The first ends are coupled to lines joined at a common coupler and the second ends include hooked portions. The tines may have a planar shape and fit within radial slots defined by the spreader. The second ends may include slanted lower surfaces that slope upward with distance inward toward a center of the clamping assembly. In use the tines are lowered over an object. Tension applied to the lines causes pivoting of the tines effective to exert a clamping force on the object.

A lifting mechanism assembly comprising a lifting section, a compression section, and an attaching section.

Lifting equipment for lifting a waffle slab used in a construction includes a main body bracket, a sliding member and a plurality of clamping mechanisms for clamping the waffle slab. The main body bracket has a through hole in a center thereof. The sliding member is slidably disposed in the through hole of the main body bracket. The sliding member includes an engagement member located at the top of the sliding member, a shaft portion connected to the bottom of the engagement member and slidably disposed in the through hole of the main body bracket, a sleeve fitted to an outer circumference of the shaft portion, and a flange fixed to the bottom of the shaft portion for preventing the sleeve from moving downward.

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.