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7562912 |
Duct mating assembly
The duct mating assembly includes a first duct having connected side members that define an interior air space. The side members include inner and outer surfaces. The first duct extends from a...
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7490872 |
Corner piece-less duct, method of producing the same, and duct-forming machine
A cornerplate-less duct includes plate members joined to each other at side end portions by a seam joint to form a tubular duct having a rectangular cross-section. Two end portions of a plate are...
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7393021 |
HVAC duct system
A duct system generally comprises a flexible duct; a fitting having an end including either an in-turned circumferential lip or a plurality of circumferentially arranged tabs; a collar having a...
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7393020 |
Connection of two pipes and sealing ring for the connection
In a pipe connection, a first pipe has a first flange of sheet metal provided with a first wall connected circumferentially to the first pipe. A second pipe has an end section shaped as a second...
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7347224 |
Supply and exhaust pipe
In order to provide a supply and exhaust pipe comprising a drop-off prevention mechanism, particularly effective for pipes with a large diameter, to increase bending strength and sealing...
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7344163 |
Trunking sections and coupling therefor
A section of trunking ( 20 ) has sides ( 22 ) which define a channel ( 34 ). Edge portions ( 32 ) of sides ( 22 ) are shaped so as to form further channels ( 34 ); Lid ( 26 ) has surface ( 29 ) and...
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7234734 |
Integral transverse flanges for a duct connecting system
An integral transverse flange for a duct includes a first upturned portion extending substantially perpendicularly from a duct wall of the duct. The flange further includes a second portion bent...
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7216898 |
Flanged connector for HVAC ducting
Flanged rings for the connection end-to-end of thin, double walled circular ducting includes a first generally-circularly shaped ring having an outer insertion flange for connection to the outer...
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7195290 |
Apparatus for a fire-rated duct
A duct system comprising duct sections which are factory manufactured and field modifiable. The field modifiable duct system comprises fire resistant materials and is fire-rated. The duct sections...
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7163030 |
Rectangular and square double wall ducting systems
A duct structure ( 510 ), includes lengths of double wall square/rectangular duct ( 532 ) manufactured by pre-forming the duct in round cross-section ( 51 ) and then transforming the round...
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7100634 |
Liquid collection basin connection assembly
An assembly for connecting two adjacent liquid collection basins is provided. The assembly includes a flume for connecting a first liquid collection basin to a second liquid collection basin. The...
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7073826 |
Butt joint between two pipe segments of sheet metal and process for manufacture thereof
Butt joint between two pipe segments ( 10 ) of sheet metal with circular or oval cross-section, which respectively exhibit on one end a connecting flange ( 32 ), formed one-piece with the adjacent...
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7059346 |
Liquid collection basin connection assembly
An assembly for connecting two adjacent liquid collection basins is provided. The assembly includes a flume for connecting a first liquid collection basin to a second liquid collection basin. The...
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7029037 |
Apparatus for connecting and sealing duct sections
An apparatus ( 10 ) for connecting and sealing duct sections is adapted for connecting and sealing round ducts ( 100 ), round oval ducts ( 200 ), and other commonly used ducts. The apparatus...
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7018127 |
Connector for joining two lengths of sheet metal ducting together end-to-end and the two pieces of sheet metal
A connector for joining two pieces of sheet metal together end-to-end. A second wall and a first wall define a first channel therebetween, into which a ledge extends, and which lockingly receives...
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6908115 |
Combined register opening cover and register boot frame
A register opening cover may be used to cover register openings until the register boot is installed in the register opening. During the installation of the register boot, the invention may be used...
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6871879 |
Fan duct assembly
A fan duct assembly includes a fan duct ( 200 ), a panel ( 600 ), and a locking plate ( 700 ). One end of the fan duct defines a rectangular opening ( 204 ) with a peripheral flange ( 220 ). A pair...
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6832786 |
Tubular member coupling device
A device for coupling tubular members including a sheet member having a first end and a second end where the first end and the second end are operatively arranged to overlap one another to form a...
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6830065 |
Duct connector apparatus and method
The duct connector of the present invention preferably has a rectangular inlet and a round outlet. An intermediate passage is located between the rectangular inlet and the round outlet. Preferably,...
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6811192 |
Apparatus and associated method for joining and sealing conduits
The apparatus for joining and sealing conduits, includes edge trim, a sleeve, and a retaining element. The edge trim is shaped to mount upon and engage an end of a conduit. The sleeve extends...
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6810570 |
Method of attaching a connector element to a duct flange
A duct assembly for transporting pressurized fluid therethrough. The assembly includes first and second duct sections. Each of the duct sections has sides extending between opposite ends. Each of...
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6796585 |
Bellows for a compensator and compensator pertaining thereto and method for producing bellows
A bellows for a compensator as an elastic connection between two duct connection pieces or flange frames arranged from each other in the longitudinal direction is presented. The bellows contains a...
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6766832 |
Transitional telescoping plenum apparatus
The present invention provides a transitional telescoping plenum apparatus that is intended to facilitate the interconnection of HVAC equipment to duct systems. The unit expands in length, width...
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6758502 |
Coupling ring for ventilation ducts, and method of connecting ventilation ducts
A flanged coupling ring for a duct element has a mounting section configured to be mounted or a connection portion of the duct element, and flange means extending outwards from the mounting...
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6736406 |
Self-adhesive gasket
A self-adhesive gasket having a pressure sensitive adhesive on one side or on both sides can be used in place of plumbers putty to seal sinks to countertops, faucets to sinks, and strainers and pop...
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6588802 |
Two-part, clamp-connected chimney flue tee
A two-part clamp-connected chimney flue tee. The tee includes an elongated main section which is detachably connected to a transversely extending bull, or snout section. The main section has flue...
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6561553 |
Angle plate fastening method and apparatus for air duct flange connectors
A method and apparatus secure together a pair of opposing angle plates which are each mounted on one of an opposing pair of flange connectors that are each attached to the end of a different one of...
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6557901 |
Device for joining two tubular elements with semitoric flange extensions
A device for joining two tubular elements composed of two complementary parts extending end portions of the tubular elements, the two complementary parts each including an essentially rigid...
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6550823 |
Flange connection for pipes, in particular, air pipes
A flange connection for pipes has a plug connection member having a pipe section and a flange connected to one end of the pipe section, wherein the pipe section has a mounting seat and a sealing...
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6547287 |
Duct connecting system having integral transverse flanges
The invention relates to an improved system for connecting the ends of sheet metal ducts wherein each duct end is provided with an integral frame. Corner connectors defining perpendicularly...
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6543489 |
Unitary reduction duct
A unitary annular reduction duct suitable for joining pipes comprising an annular entrance collar of a given diameter, a corrugated and gradually inwardly tapered reduction portion that is...
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6505864 |
Fabricated oval duct connector
A fabricated connector for oval shaped cross section ducts is provided. The fabricated connector has two oval shaped connector elements, each of which are formed from two semi-circular rings to...
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6502716 |
Duct corner dispenser and method of dispensing duct corners
Apparatus and method for dispensing L-shaped duct connectors. The apparatus supports a stack of nested L-shaped connectors and includes a separator for causing the second bottommost connector to be...
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6474697 |
Exhaust elbow
An exhaust elbow ( 1 ) is provided with a single exhaust outlet ( 2 ) with an outlet mounting flange ( 3 ) and at least two exhaust inlets ( 4, 5, 6 ) with an inlet mounting flange ( 7 ) for...
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6471256 |
Companion duct flanges
A duct assembly made from multiple duct sections for transporting pressurized fluid therethrough which can be formed simply by laborers at a building site or elsewhere and has a strong joint...
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6431609 |
Pipe connection for ventilating duct system
A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe...
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6428056 |
Method and apparatus for stacking ankle plates to permit free, sliding, lateral displacement of plates
A method and apparatus shapes and dimensions the flanges of angle plates to ensure that the plates can be stacked without nesting.
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6412519 |
Duct connecting system having double walled transverse flanges
The invention relates to an improved system for connecting the ends of sheet metal ducts wherein each duct end is provided with a double walled frame. Corner connectors defining perpendicularly...
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6364374 |
Methods and devices for joining panels
Methods and devices for joining two or more panels together are provided. The methods allow joining of panels of material such as glass fiber board, and are particularly useful for forming ducts or...
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6254140 |
Segmented flange including a shim
A flange structure formed from a plurality of joined flange segments is provided. The joined flange segments form a generally circular opening for a conduit. The flange structure can be connected...
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6244633 |
Self-sealing collar for use in heating and air conditioning systems
A collar for connecting a duct to a wall having a hole therein bounded by an edge having a predetermined thickness. The collar is constructed from a sheet of material having top, bottom, left and...
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6231704 |
Apparatus for on-site installation of air duct system
An insulated air duct apparatus including insulated duct modules and associated insulated fitting apparatus for transferring a volume of fluid in a warm air heating and air conditioning...
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6213522 |
Device for securing adjacent segments of fibrous glass duct work and the like and a system including said device
A device and system for securing adjacent segments of duct work formed from fibrous glass duct board insulation and the like is disclosed. The device comprises a corner member having two legs...
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6206432 |
Ball-lock-type quick-acting connector
A quick connector of the ball-lock type includes a socket member, a plug member and a slidable sleeve which are specifically designed to permit manufacture by deep drawing of a sheet metal. The...
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6203074 |
Duct system and method
Internal connectors are configured to conformingly fit within each of the mating ends of adjacent duct elements. The internal connectors each comprise a sleeve having an outwardly extended wall...
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6199921 |
Pipe lap joint with bridged slot
A pipe lap joint is disclosed with an improved sealing zone structure in the overlap region of the pipes. The sealing zone comprises a slot extending from the end of the outer pipe to an inner end...
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6123369 |
Pipe lap joint and methods
A lap joint includes an outer, flexible, cylindrical tube; an inner, solid, cylindrical pipe; and a securing device for compressing the flexible tube around the pipe for securing the flexible tube...
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6109665 |
Butt joint of air duct sections
The invention relates to a butt joint between two circular or flat, oval air duct sections (10) each with a connection flange (32) at each end and a ring (34) clamping the connection flanges...
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6089624 |
Pipe lap joint with improved collapsible slot
A pipe lap joint is disclosed with an improved sealing zone structure in the overlap region of the pipes. The sealing zone comprises a serpentine slot extending from the end of the outer pipe to an...
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6062610 |
Device for the coupling together of pipes
A device for coupling together pipes, which at their end have an outwardly directed bead, comprises an annular clamping strap (1) and a clamping mechanism (4-6) arranged at the ends (2a, 2b) of the...
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