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A string trimmer, also known by the portmanteau strimmer and the trademarks Weedwacker, Weed Eater and Whipper Snipper, [1] [a] is a garden power tool for cutting grass, small weeds, and groundcover. It uses a whirling monofilament line instead of a blade, which protrudes from a rotating spindle at the end of a long shaft topped by a gasoline ...
In order to sell under the Worx brand name, the company decided to employ direct response marketing including the use of infomercials. The Worx GT electric trimmer was the first Positec product to be sold using an infomercial in the United States in early 2007. By the end of that year, the company had sold 313,000 Worx GT units. [8] [10]
Positec produces, distributes, and sells products under two major brand names: WORX and Rockwell Tools. WORX is a line of lawn and garden equipment that includes products like lawn trimmers, lawn mowers, chainsaws, leaf blowers, yard carts, and accessories.
String diagrams (with generators from ) are arrows in the free monoidal category . [8] The interpretation in a monoidal category D {\displaystyle D} is a defined by a monoidal functor F : C Σ → D {\displaystyle F:C_{\Sigma }\to D} , which by freeness is uniquely determined by a morphism of monoidal signatures F : Σ → U ( D ...
Weed Eater is a string trimmer company founded in 1971 in Houston, Texas by George C. Ballas, Sr., the inventor of the device. The idea for the Weed Eater trimmer came to him from the spinning nylon bristles of an automatic car wash. He thought that he could come up with a similar technique to protect the bark on trees that he was trimming around.
The ACD is a modeling tool that was developed in 1960 following the flow diagram method of K.D. Tocher. [2] It pertains to the activity-based paradigm of system modeling, as opposed to process-oriented or event-based paradigms.
Ballas got the idea for the trimmer while driving through an automatic car wash, where the rotating brushes gave him an idea. Using a tin can laced with fishing line and an edge trimmer, he tried out his idea, which worked. After some refinements, he shopped it around to several tool makers, who all rejected his invention.
Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. [1]