Abstract: The present disclosure discloses an unmanned aerial vehicle (UAV), comprising a housing having a top part and a bottom part, a plurality of arms arranged on the top part, each arm having a motor and an airscrew, a battery unit arranged within the housing, a processor arranged within the housing, a sonar unit having a wire connected thereto, and a positioning unit detachably mounted within a mounting groove recessed from the bottom part, wherein the positioning unit is connected to the wire and configured to retract or release the wire. An UAV readily configured for fishing can be provided by embodiments of the present disclosure.

Abstract: Pigskin is processed to provide a bleached, expanded skin used in dog treat or chew products. The raw pigskin is dehaired and then daubed with an alkali mixture of an alkali liquid, alkali enzymes and lime, the mixture having a pH of greater than or equal to 12. The alkali mixture dissolves the colloidal protein. The alkali is removed by alternately rinsing the skin in water and agitating the skin with first ammonium chloride or ammonium sulfate, and then second with ammonium chloride or ammonium sulfate, and pancreatic enzymes. The skin is agitated with sodium carbonate and a degreaser to remove the fat. The skin is then washed with hydrogen peroxide, which bleaches and expands the skin. The skin is then formed into a dog product and dried.

Abstract: A modular starting gate having a truss module, a door releasing module, a stall divider module, a front door module, a rear door module, a towing module, and a wheel assembly module. The door releasing module includes a roll-bar having articulated members that are coupled to the front door module via a coupling bar and a turnbuckle adjuster. The roll-bar is coupled to the truss module via a bearing and includes a first section coupled to a second section via a U-joint. A rebound stop is coupled to the starting gate, wherein the rebound stop has a first portion mounted to the front door module which cooperates with a second portion coupled to the stall divider module.

Abstract: A starter assembly which is used to provide a staggered running start for horses racing around an oval track comprises a base portion which mounts the assembly in a vehicle moving at the front of the race and a gating system comprising a central gate member which is located between a pair of corresponding gate arms. The central gate member is pivotally secured to the base portion for swinging the central gate member from a race starting position extending diagonally of the track, and after the race has started, to a ready to fold position perpendicular the track with the gate arms in line with the central gate member. The gate arms are then folded forwardly in a balanced manner at opposite ends of the central gate member.

Abstract: A modular starting gate having a truss module, a door releasing module, a stall divider module, a front door module, a rear door module, a towing module, and a wheel assembly module. The door releasing module includes a roll-bar having articulated members that are coupled to the front door module via a coupling bar and a turnbuckle adjuster. The roll-bar is coupled to the truss module via a bearing and includes a first section coupled to a second section via a U-joint. A rebound stop is coupled to the starting gate, wherein the rebound stop has a first portion mounted to the front door module which cooperates with a second portion coupled to the stall divider module.