A hinge-rod removal and insertion tool for opening and closing modular conveyor belts during installation and servicing. The tool is a pliers with jaws forming a split aperture. The jaws open to admit the end of the hinge rod of a modular conveyor belt. The jaws close to grasp the hinge rod so that it can be pulled from the belt. A head at the distal end of the jaws is used to push a hinge rod back into the belt. The tools have lift hooks to lift a section of belt to gain access to the ends of the hinge rods.

A scratch-proof pair of pliers includes two operative units and a protective cap. The first operative unit includes a first catch formed near an end. The first catch is adapted for engagement with a portion of a weight. The second operative unit includes a second catch formed near an end. The second catch is adapted for engagement with another portion of the weight. The protective cap includes a first end, a second end, a lower portion formed between the first and second ends, and an entrance made in the second end. The protective cap further includes an opening with a portion made in the first end and another portion made in the lower portion. The protective cap is provided on the end of the first operative unit while the catch of the first operative unit is exposed via the opening.

A scratch-proof pair of pliers includes two operative units and a protective cap. The first operative unit includes a first catch formed near an end. The first catch is adapted for engagement with a portion of a weight. The second operative unit includes a second catch formed near an end. The second catch is adapted for engagement with another portion of the weight. The protective cap includes a first end, a second end, a lower portion formed between the first and second ends, and an entrance made in the second end. The protective cap further includes an opening with a portion made in the first end and another portion made in the lower portion. The protective cap is provided on the end of the first operative unit while the catch of the first operative unit is exposed via the opening.

This invention provides for a hand-held clamping tool to position and hold two pipe flanges in place allowing for the alignment the bolt holes and the gasket that in placed between the pipe flanges by using an alignment spike; and then holding the pipe flange and the gaskets in place while bolts are installed to join the two gasket sections together. The invention also has a detachable alignment spike and a also has a calibration mark on the alignment spike. The invention also describes a tool for positioning and holding ISO flanges.

A pliers includes a first pliers body (10) and a second pliers body (20). The first pliers body includes a first handle (11) and a first clamp (12). A first pliers knife (13) and a first pliers back (14) are disposed on the first clamp (12). The second pliers body (20) includes a second handle (21) and a second clamp (22). A second pliers knife (23) and a second pliers back (24) are disposed on the second clamp (22). The second clamp (22) is pivotally connected with the first clamp (12) to clamp or cut. The first pliers back (14) or the second pliers back (24) is provided with a chipping blade (50) configured in a concave arc shape for chipping.

A pliers includes a first pliers body (10) and a second pliers body (20). The first pliers body includes a first handle (11) and a first clamp (12). A first pliers knife (13) and a first pliers back (14) are disposed on the first clamp (12). The second pliers body (20) includes a second handle (21) and a second clamp (22). A second pliers knife (23) and a second pliers back (24) are disposed on the second clamp (22). The second clamp (22) is pivotally connected with the first clamp (12) to clamp or cut. The first pliers back (14) or the second pliers back (24) is provided with a chipping blade (50) configured in a concave arc shape for chipping.

The present invention discloses a method for manufacturing a manual tool, comprising: performing dual-frequency induction quenching on a first surface of a moment output part or a moment transmission part of the manual tool such that a quench-hardened layer is formed within a first depth range from the first surface of the moment output part to the interior of the moment output part or within a first depth range from the first surface of the moment transmission part to the interior of the moment transmission part, the hardness of the quench-hardened layer being higher than that of the body of the moment output part or the moment transmission part; the dual-frequency induction quenching being configured to simultaneously feed or introduce a high-frequency current and an intermediate-frequency current to the same induction coil to simultaneously heat the first surface of the moment output part or the first surface of the moment transmission part by the high-frequency current and the intermediate-frequency current, and then the moment output part or the moment transmission part being cooled and quenched. The present invention also discloses a manual tool manufactured by the above method. The manual tool subjected to double-frequency induction quenching according to the present invention has good abrasion resistance.

The present invention discloses a method for manufacturing a manual tool, comprising: performing dual-frequency induction quenching on a first surface of a moment output part or a moment transmission part of the manual tool such that a quench-hardened layer is formed within a first depth range from the first surface of the moment output part to the interior of the moment output part or within a first depth range from the first surface of the moment transmission part to the interior of the moment transmission part, the hardness of the quench-hardened layer being higher than that of the body of the moment output part or the moment transmission part; the dual-frequency induction quenching being configured to simultaneously feed or introduce a high-frequency current and an intermediate-frequency current to the same induction coil to simultaneously heat the first surface of the moment output part or the first surface of the moment transmission part by the high-frequency current and the intermediate-frequency current, and then the moment output part or the moment transmission part being cooled and quenched. The present invention also discloses a manual tool manufactured by the above method. The manual tool subjected to double-frequency induction quenching according to the present invention has good abrasion resistance.

At least some implementations of the present invention include the ability to access and secure a compressed riser portion of a pop-up sprinkler. Access is gained through use of the tip of the tool, sloped for access clearance between the sprinkler nozzle “lip” and outer sprinkler base. Once raised from the outer sprinkler casing, the riser is secured in a designated clamping bay or within designated clamping points. This two-pronged approach accommodates varying diameter of sprinkler risers and increases the multi-use function of the tool. The tool's overall inward tension is provided by an engineered compression spring designed with adequate outward tension without making hand compression use of the tool restrictive. Use of the tool in an inward sweeping motion toward the sprinkler allows for raising and clamping the riser in a quick and simple fashion. Thereafter, allowing free and open-hand access for quick and thorough maintenance, repair, exchange or adjustment of the sprinkler nozzle and filter.

At least some implementations of the present invention include the ability to access and secure a compressed riser portion of a pop-up sprinkler. Access is gained through use of the tip of the tool, sloped for access clearance between the sprinkler nozzle “lip” and outer sprinkler base. Once raised from the outer sprinkler casing, the riser is secured in a designated clamping bay or within designated clamping points. This two-pronged approach accommodates varying diameter of sprinkler risers and increases the multi-use function of the tool. The tool's overall inward tension is provided by an engineered compression spring designed with adequate outward tension without making hand compression use of the tool restrictive. Use of the tool in an inward sweeping motion toward the sprinkler allows for raising and clamping the riser in a quick and simple fashion. Thereafter, allowing free and open-hand access for quick and thorough maintenance, repair, exchange or adjustment of the sprinkler nozzle and filter.