Abstract

A sealing device for sealing a space defined between respective end portions of an adjacent pair of orthogonal flange members of a conditioned air duct having a generally rectangular cross-section. The sealing device includes a substantially planar first plate member having a surface configured for placement in face-to-face relation with corresponding adjacent planar surfaces of the adjacent pair of orthogonal flange members. A leg member extends away from a generally central portion of the first plate member and is generally perpendicular thereto. The leg member includes second and third orthogonal plate members extending in respective orthogonal planes and having respectively orthogonal surface portions. The second and third orthogonal plate members are configured and dimensioned to engage corresponding respective adjacent orthogonal inner wall surface portions of the duct when the first plate member is positioned on the planar surface portions of the adjacent pair of orthogonal flange members.

IPC Classes  ?

• F24F 13/02 - Ducting arrangements
• F16L 23/16 - Flanged joints characterised by the sealing means
• F16L 23/14 - Flanged joints specially adapted for particular pipes for rectangular pipes
• F16J 15/10 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing

Abstract

The invention is directed to a handle assembly for rotating a pivot rod attached to a damper within ductwork, for the purpose of controlling the flow of conditioned air therethrough. In particular, the present invention provides a pre-assembled portion of the required parts, thereby reducing the number of steps required for final assembly of the damper handle to the pivot rod, resulting in a significant time savings.

IPC Classes  ?

• F24F 13/14 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built-up of tilting members, e.g. louvre

Abstract

A method and apparatus is disclosed for preparing release paper rolls of adhesive duct insulation material which are stackable and non-adherent to each other. The adhesive insulation material contemplated is the type used for sealing crevices and spaces in air cooling and leaking systems generally referred to as "Heating, Ventilation and Cooling" systems, or "HVAC". The apparatus and method disclosed dispenses strips (16) of the adhesive insulation material onto release paper (20) generally silicone coated on at least one side, leaving a marginal tab (30) which is then bent upwardly to contact each alternate side face (32) of the insulation strips (16) to protect them from adhering to each other when placed in a shipping container. This system thus avoids the need for inserting a sheet of interface paper between the rolls to prevent them from sticking to each other.

IPC Classes  ?

• B65H 35/02 - Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators

Abstract

A corner seal device is disclosed for use in preventing unwanted air leaks in ductwork sections intended for directing conditioned air in heating, ventilating and air conditioning systems (i.e., HVAC systems). The comer seal device eliminates potential air leaks caused inter alia, by the flange members of the ductwork sections, and further, it avoids previously known costly expenses and loss of time to seal the unwanted air leaks created when the flange members of the ductwork sections are made and are prepared for assembly of the ductwork sections. A method of assembly of such ductwork sections incorporating the unique comer seal device of the invention, is also disclosed. A duct for directing conditioned air in heating, ventilating and air conditioning systems incorporating such ducts is also disclosed. A heating, ventilating and air conditioning system incorporating such unique corner seal device and related structures is also disclosed.

IPC Classes  ?

• F24F 13/02 - Ducting arrangements
• F16L 23/16 - Flanged joints characterised by the sealing means

Abstract

An adjustable regulator and lock device for a pivotally rotatable damper adapted for installation in an air duct of an HVAC system is disclosed, which includes a pivot rod rotatably attached to the air duct and arranged for rotation with the damper. The pivot rod has coupled to it, a lockdown member having a plurality of radially extending teeth extending outwardly therefrom. A plate member is fixedly spaced from the air duct and has a plurality of correspondingly shaped and dimensioned tooth-shaped cutouts adapted to receive the teeth of the lockdown member to selectively lock the rotational position of the pivot rod and the damper in a selected angular orientation. The teeth of the lockdown member are biased by a coil spring toward engagement with the cutouts of the plate member, and yet selectively releaseable therefrom. When the teeth of the lockdown member are manually released from engagement with the plate member, the pivot rod and the damper are rotatable to any number of select angular positions, whereby the lockdown member can be released from the force of the coil spring and the teeth of the lockdown member can be engaged with the cutouts of the plate member to secure the damper in a selected angular orientation. In a preferred embodiment, the teeth of the lockdown member have an outermost side elevational profile which is tapered, whereby the outermost dimension of the teeth is progressively greater from the plate member toward the air duct. In an alternative embodiment, the teeth of the lockdown member have an outermost dimension which is constant as measured along the length of the pivot rod. The invention provides secure and locked positioning of the damper.

IPC Classes  ?

• F24F 13/14 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built-up of tilting members, e.g. louvre
• F16K 35/02 - Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a push or pull
• F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves

Abstract

A bushing is disclosed for pivotally mounting a damper in ductwork of the type generally used with heating, ventilation, and air conditioning (HVAC) systems. The bushing is a circular shaped member of silicone rubber material, which is particularly configured and dimensioned to provide an airtight fit with the ductwork to prevent loss of conditioned air at the pivot location, without compromising the rotational capability of the damper to alter the direction of the conditioned air. The bushing is dimensioned to be inserted into the ductwork and includes a peripheral groove which receives the ductwork in a manner which compresses the inner surface of the groove to provide the airtight seal. The bushing also includes a longitudinally tapered square central opening, which opening is dimensioned to engageably receive the damper pivot rod snugly to provide additional sealing at the interface between the bushing and the pivot rod.

IPC Classes  ?

• F24F 13/14 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built-up of tilting members, e.g. louvre
• F16K 1/226 - Shape or arrangement of the sealing