Abstract: A base Tee connector for connecting, for example, an exhaust pipe to a chimney liner, includes a section of cylindrical pipe made of sheet metal. The base Tee connector includes an open top end adapted for connection with the chimney liner, and an open bottom. A portion of the sheet metal of the cylindrical pipe is deformed and thereby defines a flat open side end adapted for connection with an exhaust pipe. The flat open side end defines a plane substantially tangential to the section of the cylindrical pipe such that a horizontal section of a conventional base Tee connector is significantly shortened while the flat open side end feature of the conventional base Tee connector is retained. Thus, the base Tee connector of the present invention can pass relatively easily through a chimney passage, and it is also relatively easy to connect with an exhaust pipe within a limited space.

Abstract: The present invention relates to a pipe connection configuration which is particularly used for furnace exhaust pipe connection or the like. A sheet metal pipe with an open end thereof is mounted to a sheet metal T-shaped three-way pipe joint. The pipe joint has a first pipe section and a second pipe section extending perpendicularly from the first pipe section. The pipe joint includes a pair of diametrically opposed bayonet slots extending from an open end of the second pipe section for receiving and engaging a pair of diametrically opposed pins projecting radially and outwardly from the pipe when the open end of the pipe slides into the open end of the second pipe section, in order to ensure a secure connection between the pipe and the pipe joint. Such a pipe connection configuration provides a self-locking connection of the pipe to the T-shaped three-way pipe joint in a very simple manner which reduces the amount of labour required on site.

Abstract: The present invention relates to a removable, self-locking chimney cap which is screwless. The chimney cap comprises a stationary member and a removable member removably mountable to the stationary member. The stationary member comprises a base plate adapted to be secured to the end of the chimney or venting system and defining an opening, and a first tube mounted to the base plate around the opening. The removable member comprises a second tube adapted to slide over the first tube and a cap mounted to the second tube, the first and the second tubes comprising a pin and a corresponding bayonet slot adapted to receive the pin, whereby when the second tube slides over the first tube, the pin is received by the bayonet slot and locks the removable member with the stationary member. Such a chimney cap may be manually locked and unlocked in a single step, without the use of tools.