摘要:
An elongated flexible form is disclosed. The elongated flexible form may be shaped to fit the contour of a concrete structure of variable shape and is held in position by a plurality of positioning brackets. The flexible form is made out of a flexible material such as natural or synthetic rubber and may be reinforced by metal strips, cable mesh, metal mesh, nylon mesh or a combination of the same. Each of the positioning brackets has a hollow body portion which is molded to a flexible form or welded to a metal plate which is molded to the flexible form. A stake and wedge combination are used to hold each bracket in place. Connecting flanges may be used to attach the end of the flexible form to another flexible form or to a metal form. The connecting flanges are molded or welded to a metal plate which are molded to the end of each form and are held together by a fastening device. The flexible form has a plurality of ribs therealong said form to provide strength and to reduce the required thickness thereof.
摘要:
A method and apparatus includes positioning a reactant on a surface in specific location and then directing an energy source from a device at the reactant such that it modifies the surface to either remove material or add material.
摘要:
A method and system includes the accurate positioning of a sample in a multi-axis range of motion. In a preferred embodiment, the present invention enables this movement by combining coarse and fine motion stages. By using a combination of stages and precise measuring means, normal and typical errors are significantly reduced.
摘要:
A method and apparatus includes positioning a reactant on a surface in specific location and then directing an energy source from a device at the reactant such that it modifies the surface to either remove material or add material.
摘要:
A torque multiplier consists of a wrench or a set of wrenches, to be used with a torque wrench to increase the capacity of a torque wrench by specific ratios, each having an elongated, non-extensible, straight shank with a laterally extended drive stud at one end and a laterally disposed stud socket at the other end. The studs of each wrench can be made to fit the sockets of each other wrench in the set, so that they can be mounted end to end in a straight line to multiply the leverage, torque foot pounds, or mechanical advantage of a single wrench of the set. The studs, or sockets, may be square or hexagonal and may be of the ratchet type.
摘要:
A method and apparatus includes positioning a reactant on a surface in specific location and then directing an energy source from a device at the reactant such that it modifies the surface to either remove material or add material.
摘要:
There is provided a brush holder (40) comprises a body portion (42) fold-lined to a lower closure portion (45) adjacent a front closure portion (46), a top closure portion (50) comprising an upper web (51) having a brush handle aperture (54) formed therein and a closure tab (52). The closure tab (52) is cut at (55) to form a securing tongue (56) adapted in use to engage a securing slot (48) in the front closure portion (46). A left closure leaf (57) is adjacent a tapered left wall portion (60) hinged to the body portion (42) at (43). A right closure leaf (65) is adjacent a tapered right wall portion (66) hinged to the body portion (42) at (43). The upper edge of the left and right closure leaves (57, 65) is provided with a respective integral hanging tab (63, 71) having hanging apertures (64, 72) which are aligned in use. The lower portions of each of the left (60) and right (66) side wall portions are provided with three solvent apertures (74). In use, the handle of a brush is inserted through the aperture (54), the bristle mass is rested on the body portion (42), the left closure (57) and left side wall portion (60) are folded up, the right closure (65) and right side wall portions (66) are folded up. The lower closure portion (45) and front closure portion (46) are folded up, and the securing tongue (56) is flexed to engage the securing slot (48) and retain the apparatus in its in-use form.