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US 2015/0020459 A1Published application
Duct access door
AssigneeOmni Containment Systems, LLC
InventorKevin R. Chwala
Life of this patent
Estimating the term…
Abstract
An access panel for an opening in a duct is provided. The access panel includes an exterior and an interior. The access panel further includes a section positioned on the interior and having a profile substantially corresponding to the opening in the duct. A plurality of fasteners is positioned about the section. Each fastener has a dip configured to move to a position defined to extend away from the profile of the section on the interior. When the access panel is positioned with the section on the interior against the opening in the duct and the fasteners are moved to the locking position the clips rotate to extend over the profile and secure a portion of the duct adjacent to the opening against the interior of the access panel.
Claims19
An access panel for an opening in a duct system surrounded by insulation, the access panel comprising:
- a base plate having an exterior surface side and an interior surface side, wherein the base plate is positioned against the opening of the duct system such that the interior surface side faces towards the duct system and the exterior surface side faces away from the duct system;
- wherein the interior surface side of the base plate has defined a first interior surface section having a profile corresponding substantially to the opening in the duct system, and a second interior surface section defined between the first interior surface section and an outside edge of the base plate, such that when the base plate is positioned against the opening of the duct system the first interior surface section resides about the opening of the duct system and the second interior surface section overlaps a duct edge defined about a periphery of the opening in the duct system;
- and
- a plurality of rotatable fasteners separately positioned through openings in the base plate about the profile of the first interior surface section, each fastener having a locking clip extending from the fastener about the interior surface side of the first interior surface section and said locking clip being configured to move into a locking position, said locking position defined when the locking clip is rotated to extend over and engage the duct edge, and each fastener having a top portion accessible from the exterior surface side of the base plate such that when the top portion is rotated the locking clip rotates therewith, and each fastener further includes an internally threaded bore positioned through the top portion towards the base plate, and each fastener further includes an threaded bolt to fasten into the internally threaded bore, the threaded bolt defined to include a plurality of threaded sections and a plurality of unthreaded sections, wherein the plurality of unthreaded sections are separately positioned between a pair of adjacent threaded sections from the plurality of threaded sections, the threaded bolt having an elongated length such that an end distal to the fastener extends past the insulation, and wherein the unthreaded section further defining a weak section such that an excess portion of the threaded bolt extending past the insulation is broken away;
- and
- whereby when the access panel is positioned with the first interior surface section on the interior surface against the opening in the duct system and one or more of the plurality of rotatable fasteners are moved to said locking position, by rotating the elongated threaded bolts, one or more of the locking clips rotate to extend over and engage the duct edge to secure the duct system to the base plate.
3 more elements
An access panel for an opening in a duct system surrounded by insulation, the access panel comprising:
- a base plate having an exterior surface side and an interior surface side, wherein the base plate is positioned against the opening of the duct system such that the interior surface side faces towards the duct system and the exterior surface side faces away from the duct system;
- wherein the interior surface side of the base plate has defined a first interior surface section having a profile corresponding substantially to the opening in the duct system, and a second interior surface section defined between the first interior surface section and an outside edge of the base plate, such that when the base plate is positioned against the opening of the duct system the first interior surface section resides about the opening of the duct system and the second interior surface section overlaps a duct edge defined about a periphery of the opening in the duct system;
- and
- a plurality of rotatable fasteners separately positioned through openings in the base plate about the profile of the first interior surface section, each fastener having a locking clip extending from the fastener about the interior surface side of the first interior surface section and said locking clip being configured to move into a locking position, said locking position defined when the locking clip is rotated to extend over and engage the duct edge, and each fastener having a top portion accessible from the exterior surface side of the base plate such that when the top portion is rotated the locking dip rotates therewith, and each fastener further includes an internally threaded bore positioned through the top portion towards the base plate, and each fastener further includes an threaded bolt to fasten into the internally threaded bore, the threaded bolt defined to include a plurality of threaded sections and a plurality of unthreaded sections, wherein the plurality of unthreaded sections are separately positioned between a pair of adjacent threaded sections from the plurality of threaded sections, the threaded bolt having an elongated length such that an end distal to the fastener extends past the insulation, and wherein the unthreaded section further defining a weak section such that an excess portion of the threaded bolt extending past the insulation is broken away at an unthreaded section and wherein the unthreaded sections include a section narrower than the threaded sections;
- and
- whereby when the access panel is positioned with the first interior surface section on the interior surface against the opening in the duct system and one or more of the plurality of rotatable fasteners are moved to said locking position, by rotating the elongated threaded bolts, one or more of the locking clips rotate to extend over and engage the duct edge to secure the duct system to the base plate.
3 more elements
A threaded bolt comprising:
- a plurality of threaded sections and a plurality of unthreaded sections, wherein the plurality of unthreaded sections are separately positioned between a pair of adjacent threaded sections defined from the plurality of threaded sections, the threaded bolt having an elongated length, and wherein the unthreaded section further defining a weak section such that the threaded bolt is configured to brake away at an unthreaded section.
Dependencies are inferred from the claim text.