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2. Highway Addressable Remote Transducer Protocol - Wikipedia

   en.wikipedia.org/wiki/Highway_Addressable_Remote...

   The HART Communication Protocol (Highway Addressable Remote Transducer) is a hybrid analog+digital industrial automation open protocol. Its most notable advantage is that it can communicate over legacy 4–20 mA analog instrumentation current loops, sharing the pair of wires used by the analog-only host systems.

3. String trimmer - Wikipedia

   en.wikipedia.org/wiki/String_trimmer

   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 ...

4. Hazardous area response team - Wikipedia

   en.wikipedia.org/wiki/Hazardous_area_response_team

   The Hazardous Area Response Team (HART) is a capability of the NHS ambulance services in the United Kingdom devoted to providing paramedic and enhanced medical care to patients in the "hot zone" of hazardous environments.

5. Hart InterCivic - Wikipedia

   en.wikipedia.org/wiki/Hart_InterCivic

   Hart InterCivic Inc. is a privately held United States company that provides election technologies and services to government jurisdictions. Headquartered in Austin, Texas, Hart products are used by hundreds of jurisdictions nationwide, including counties in Texas, the entire states of Hawaii and Oklahoma, half of Washington and Colorado, and certain counties in Michigan [1], Ohio, California ...

6. Oliver 90 - Wikipedia

   en.wikipedia.org/wiki/Oliver_90

   The Oliver 90 series of row-crop tractors was a series of agricultural tractors produced from 1937 to 1961 by the Oliver Farm Equipment Company.Beginning with the Hart-Parr 28–44, the series was the most powerful Oliver tractor offering, capable of heavy plowing.

7. Hart's inversors - Wikipedia

   en.wikipedia.org/wiki/Hart's_inversors

   Hart's first inversor, also known as Hart's W-frame, is based on an antiparallelogram.The addition of fixed points and a driving arm make it a 6-bar linkage. It can be used to convert rotary motion to a perfect straight line by fixing a point on one short link and driving a point on another link in a circular arc.