Abstract: A backpack assembly for a self contained breathing apparatus comprises a plurality of components positioned in housings that define a body for the backpack assembly. The body is assembled to a back frame. A pivoting and swiveling hip plate is connected to the back frame in multiple distinct positions to provide a customizable and comfortable fit for the wearer.

Abstract: A backpack assembly for a self contained breathing apparatus comprises a plurality of components positioned in housings that define a body for the backpack assembly. The body is assembled to a back frame. A pivoting and swiveling hip plate is connected to the back frame in multiple distinct positions to provide a customizable and comfortable fit for the wearer.

Abstract: A broadcast spreader constructed from two separate and rotationally molded parts; one molded part integrates the handle and hopper assemblies while the other molded part forms the base assembly that supports the wheels for the spreader. A pair of dovetail-like connection between the molded parts assures a strong and tight fit and proper alignment therebetween. Also provided are a self-aligning bearing for the rotor shaft and a single control for simultaneously operating a deflector plate and an auxiliary dispensing member for the spreader.

Abstract: First and second mold members are fitted one within another and together define a first annular space for forming a discontinuous single thread in a thin-walled housing, as well as a second annular space coaxial and contiguous with the first annular space; the second space defines the thread on the interior wall of the housing in the form of teeth members for receiving a threaded member associated with a linear adjustment device used with an agricultural implement, such as a spreader.

Abstract: A drop spreader having a hopper with a series of materials-dispensing apertures therein supported by a pair of wheels, an upper U-shaped frame pivotally connected to a pair of spaced-apart leg members supported on the hopper for use as a handle for the spreader, the hopper further having molded in place a pair of sleeve members adjacent the rim thereof for receiving the respective leg members, a shutoff bar adjacent the apertures being composed of two different materials, plastic enveloping metal, and further the use of a simple pivotal snap connection between the micrometer device used with the spreader and the control lever for controlling the movement of the shutoff bar.

Abstract: An adjustable oscillating wave-type irrigation sprinkler having an impact or impulse drive type mechanism for effecting side-to-side oscillation by a spray tube about a horizontal axis, the drive mechanism including a pair of drive spoons coupled to impact arms journaled for rotation relative to the spray tube and intercepting streams of water from the spray tube to produce incremental rotation of the spray tube about the horizontal axis.