초록 ▼

A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines the molten metal receiving chamber (36). A thermally conductiv

A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines the molten metal receiving chamber (36). A thermally conductive heat exchanger block (54) is located at the bottom of the molten metal receiving chamber (36) for heating the supply of molten metal. The heat exchanger block (54) includes a bottom face (65), side faces (66), and a top face (67). The heat exchanger block (54) includes a plurality of electrical heaters (70) extending therein and projecting outward from at least one of the faces of the heat exchanger block (54), and further extending through the furnace insulating layer (42) and one of the sidewalls (32) of the storage vessel (30) for connection to a source of electrical power. A sealing layer (50) covers the bottom face (65) and side faces (66) of the heat exchanger block (54) such that the heat exchanger block (54) is substantially separated from contact with the furnace insulating layer (42).

대표청구항 ▼

A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines the molten metal receiving chamber (36). A thermally conductiv

A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines the molten metal receiving chamber (36). A thermally conductive heat exchanger block (54) is located at the bottom of the molten metal receiving chamber (36) for heating the supply of molten metal. The heat exchanger block (54) includes a bottom face (65), side faces (66), and a top face (67). The heat exchanger block (54) includes a plurality of electrical heaters (70) extending therein and projecting outward from at least one of the faces of the heat exchanger block (54), and further extending through the furnace insulating layer (42) and one of the sidewalls (32) of the storage vessel (30) for connection to a source of electrical power. A sealing layer (50) covers the bottom face (65) and side faces (66) of the heat exchanger block (54) such that the heat exchanger block (54) is substantially separated from contact with the furnace insulating layer (42). US-2958084, 19601100, Kenney; US-4219036, 19800800, Biggs, 135/093; US-4285354, 19810800, Beavers, 135/135; US-4478234, 19841000, Bester, 135/093; US-4637748, 19870100, Beavers, 403/170; US-4750509, 19880600, Kim, 135/135; US-4790340, 19881200, Mahoney; US-4811437, 19890300, Dillner et al.; US-4966178, 19901000, Eichhorn, 135/125; US-4981387, 19910100, Younjae, 135/135; US-5046882, 19910900, Ju, 403/170; US-5069572, 19911200, Niksic, 403/170; US-5099866, 19920300, Solis et al.; US-5279006, 19940100, Teng; US-5328286, 19940700, Lee, 135/135; US-D366978, 19960200, Mariol; US-D367788, 19960300, Lawhorn; US-D370149, 19960500, Stratton; US-5666986, 19970900, Fox, 135/135; US-5678586, 19971000, Baksh, 135/033.7; US-D390730, 19980200, Gerhart et al.; US-5797695, 19980800, Prusmack, 403/170; US-D404216, 19990100, Gerhart; US-5862548, 19990100, Gerhart; US-5884646, 19990300, Ju, 135/135; US-6123091, 20000900, Flynn et al.; US-6296415, 20011000, Johnson et al., 403/170 nsportation element. 7. The method for metering delivery quantity of an ultra-low temperature liquefied gas according to claim 5 or 6, wherein the ultra-low temperature liquefied gas is a liquefied natural gas. a second position with said air gun positioned so an attached medium conduit is inserted through a side guide clearance in a side guide, directing said medium towards said blind hole, wherein a guide plug is usable for plugging whichever guide is not being used. 3. The device of claim 2 further comprising a hanger which is useful for hanging said device as well as serves as an aid enabling an operator in visually aiming said exhaust clearance in a safe direction. 4. The device of claim 3 further comprising a medium conduit further comprising detents holding said device on said medium conduit as a convenience for handling and storage. 5. A device useful in flushing debris from a blind hole comprising: a) a case, b) an exhaust clearance, c) a bottom clearance, d) at least one guide with a clearance, and e) a medium conduit further comprising detents holding said device on said medium conduit as a convenience for handling and storage, wherein said device can rest on a work piece, with the device in position over a blind hole, with said at least one guide with a clearance guiding a conduit through which a medium flows so that said medium is guided into said blind hole from whence said medium can flush debris out of said blind hole flowing out of said blind hole with dislodged debris through said exhaust clearance.