Abstract: An adjustable sledgehammer workout apparatus may include a handle, and a clamping assembly connected to the handle. The clamping assembly can include an upper portion and a lower portion, the lower portion connected to a first end of the handle, the clamping assembly operable to releasably clamp a dumbbell between the upper and lower portions of the clamping assembly. The clamping assembly can include a first clamping subassembly operable to apply a clamping force on the upper and lower portions of the clamping assembly. The clamping assembly can further include a second clamping subassembly engageable with the first clamping subassembly, the second clamping subassembly operable to increase the clamping force applied by the first clamping subassembly on the upper and lower portions of the clamping assembly.

Abstract: An adjustable sledgehammer workout apparatus may include a handle, a pair of supporting brackets connected to the handle, and a clamping assembly connected to the supporting brackets. The supporting brackets may be rectangular in shape with beveled or rounded edges. The clamping assembly may include a pair of lower c-shaped portions connected to a pair of upper c-shaped portions using a hinge assembly. Different size and weight dumbbells may be connected to the handle using the clamping assembly.

Abstract: An adjustable sledgehammer workout apparatus may include a handle, and a clamping assembly connected to the handle. The clamping assembly can include an upper portion and a lower portion, the lower portion connected to a first end of the handle, the clamping assembly operable to releasably clamp the dumbbell between the upper and lower portions of the clamping assembly. The clamping assembly can include a first clamping subassembly operable to apply a clamping force on the upper and lower portions of the clamping assembly. The clamping assembly can further include a second clamping subassembly engageable with the first clamping subassembly, the second clamping subassembly operable to increase the clamping force applied by the first clamping subassembly on the upper and lower portions of the clamping assembly.

Abstract: An adjustable sledgehammer workout apparatus may include a handle, a pair of supporting brackets connected to the handle, and a clamping assembly connected to the supporting brackets. The supporting brackets may be rectangular in shape with beveled or rounded edges. The clamping assembly may include a pair of lower c-shaped portions connected to a pair of upper c-shaped portions using a hinge assembly. Different size and weight dumbbells may be connected to the handle using the clamping assembly.

Abstract: An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with a wire pass-through tube and a sight glass opening. After the door member has been externally secured to a side wall portion of the water heater over an access opening therein, with the main and pilot burner structures disposed in the combustion chamber of the water heater, a lighting wand is extended through the sight glass opening to light and test the burners. Subsequently, a sight glass structure is snapped into the sight glass opening to complete the installation of the door/burner assembly. Thermocouple and igniter wires extend through the pass-through tube, and are sealed therein by a laterally split resilient cylindrical sealing plug member.

Abstract: An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with a wire pass-through tube and a sight glass opening. After the door member has been externally secured to a side wall portion of the water heater over an access opening therein, with the main and pilot burner structures disposed in the combustion chamber of the water heater, a lighting wand is extended through the sight glass opening to light and test the burners. Subsequently, a sight glass structure is snapped into the sight glass opening to complete the installation of the door/burner assembly. Thermocouple and igniter wires extend through the pass-through tube, and are sealed therein by a laterally split resilient cylindrical sealing plug member.

Abstract: An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with a wire pass-through tube and a sight glass opening. After the door member has been externally secured to a side wall portion of the water heater over an access opening therein, with the main and pilot burner structures disposed in the combustion chamber of the water heater, a lighting wand is extended through the sight glass opening to light and test the burners. Subsequently, a sight glass structure is snapped into the sight glass opening to complete the installation of the door/burner assembly. Thermocouple and igniter wires extend through the pass-through tube, and are sealed therein by a laterally split resilient cylindrical sealing plug member.

Abstract: An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with a wire pass-through tube and a sight glass opening. After the door member has been externally secured to a side wall portion of the water heater over an access opening therein, with the main and pilot burner structures disposed in the combustion chamber of the water heater, a lighting wand is extended through the sight glass opening to light and test the burners. Subsequently, a sight glass structure is snapped into the sight glass opening to complete the installation of the door/burner assembly. Thermocouple and igniter wires extend through the pass-through tube, and are sealed therein by a laterally split resilient cylindrical sealing plug member.

Abstract: An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with a wire pass-through tube and a sight glass opening. After the door member has been externally secured to a side wall portion of the water heater over an access opening therein, with the main and pilot burner structures disposed in the combustion chamber of the water heater, a lighting wand is extended through the sight glass opening to light and test the burners. Subsequently, a sight glass structure is snapped into the sight glass opening to complete the installation of the door/burner assembly. Thermocouple and igniter wires extend through the pass-through tube, and are sealed therein by a laterally split resilient cylindrical sealing plug member.

Abstract: Fuel fired power vented and natural draft type water heaters are provided with flammable vapor sensors operative to detect flammable vapors exteriorly adjacent the water heater and responsively preclude fuel flow to the burner portion of the water heater. In each water heater a flow tube is extended between the flammable vapor sensor and the draft structure of the water heater and forms a flow path isolated from the combustion chamber of the water heater. In the event that flammable vapors are present exteriorly adjacent the water heater, the forced or natural draft of the water heater creates a biased flow of flammable vapors which is sequentially drawn across the vapor sensor and through the isolated flow path to the draft structure of the water heater.