Abstract: A fitness device for strength training can include: a clamshell housing including a front portion and a back portion. The front portion and the back portion can mate together to define an internal volume. The clamshell housing includes first handle portions extending circumferentially around the front portion and second handle portions extending circumferentially around the back portion. The first and second handle portions mate together to define a plurality of handles. The fitness device includes a sealed container defining a fluid chamber. The sealed container can be fixedly received within the internal volume defined by the front portion and the back portion of the clamshell housing. The fluid chamber of the sealed container can contain: a gaseous component, a first fluid component, and a second fluid component.

Abstract: A fitness device for strength training can include: a clamshell housing including a front portion and a back portion. The front portion and the back portion can mate together to define an internal volume. The clamshell housing includes first handle portions extending circumferentially around the front portion and second handle portions extending circumferentially around the back portion. The first and second handle portions mate together to define a plurality of handles. The fitness device includes a sealed container defining a fluid chamber. The sealed container can be fixedly received within the internal volume defined by the front portion and the back portion of the clamshell housing. The fluid chamber of the sealed container can contain: a gaseous component, a first fluid component, and a second fluid component.

Abstract: Devices, and methods for strength training are disclosed herein. A fitness device for strength training can include: a clamshell housing including a front portion and a back portion. The front portion and the back portion can mate together to define an internal volume. The clamshell housing includes first handle portions extending circumferentially around the front portion and second handle portions extending circumferentially around the back portion. The first and second handle portions mate together to define a plurality of handles. The fitness device includes a sealed container defining a fluid chamber. The sealed container can be fixedly received within the internal volume defined by the front portion and the back portion of the clamshell housing. The fluid chamber of the sealed container can contain: a gaseous component, a first fluid component, and a second fluid component.

Abstract: One end of a wrench is a first measurement system, such as SAE, and the second end is another measurement system, such as metric, that is close in size to the first end. It is possible to know approximately the correct size wrench needed but not the measurement system. Having two measurement systems in a single tool allows a user to pick a single wrench and have a high probability that one end of the wrench will correctly fit the nut or bolt. The end may be any type of socket, such as open ended or box ended, and the box end may be supplied with a ratchet mechanism. The combination of a first measurement system and a second measurement system on each end, close in size to one another, the ratcheting box end and the ability to reverse the ratchet action direction greatly reduces time and effort in the removal and tightening of bolts and nuts.

Abstract: A water dispenser having a cold water tank maintaining water below room temperature. A thermoelectric chip module, preferably having two thermoelectric chips, extracts heat from the cold water tank. The cold side of the thermoelectric chip faces the cold water tank. The hot side of the thermoelectric chip has a heat sink or fans providing convection.