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Lester C. Tichy (1905–1981) was a prolific 20th-century American architect and industrial designer.Tichy is perhaps best known for his association with the Pennsylvania Railroad, for which he created the infamous "Clamshell", an aluminum and steel canopy over the electronic ticketing area, in Penn Station’s Main Waiting Room in New York City.
Where the high temperatures and sources of ignition required by hot cutting are not desirable, air- or hydraulically-powered pipe cutting machines are used. These comprise a clamshell or chain-mounted cutting head holding a tool steel and feed mechanism which advances the tool a set amount per revolution round the pipe.
The clamshell form factor is based on the hinged design of the clam.. The clamshell form factor is most closely associated with the cell phone market, as Motorola used to have a trademark on the term "flip phone", [1] but the term "flip phone" has become genericized to be used more frequently than "clamshell" in colloquial speech.
Clamshell may denote anything resembling the bivalve shell of a clam: Scoop stretcher, another name for this patient transport device; Clamshell design, a form factor used for electronic devices, also known as a "flip" or "flip phone". Clamshell (container), a design used for storage and food packaging, usually made of plastic or paperboard.
Extrusion billets of aluminium in Yugoslavia, 1968. Aluminium (or aluminum) metal is very rare in native form, and the process to refine it from ores is complex, so for most of human history it was unknown. However, the compound alum has been known since the 5th century BCE and was used extensively by the ancients for dyeing.
The material with which a pipe is manufactured often forms as the basis for choosing any pipe. Materials that are used for manufacturing pipes include: Carbon steel; ASTM A252 Spec Grade 1, Grade 2, Grade 3 Steel Pile Pipe; Plastic piping, e.g. HDPE pipe, PE-X pipe, PP-R pipe or LDPE pipe. [11] Low temperature service carbon steel; Stainless steel
The guide walls are constructed near the ground surface to outline the desired slurry trench, and to guide the excavation machinery. Excavation is done using a special clamshell-shaped digger or a hydromill trench cutter, suspended from a crane. The excavator digs down to design depth (or bedrock) for the first wall segment.
A single piece of material is used for the top and bottom with a "living hinge" that is integral to the material, rather than added separately. Folding cartons made of paperboard or molded pulp can also be of a clamshell shape. [4] It can also be made of cellulose fiber such as sugarcane-bagasse, wheatstraw, wood pulp, etc.