Abstract: A carbonation machine includes a carbonation head comprising: a carbonation lever configured to be operated by a user to assume a carbonation position to carbonate a liquid in a bottle connected to the carbonation head; a plunger for operating a valve of a gas canister between a closed position and an open position, whereby, when the carbonation lever assumes a carbonation position, the plunger causes the valve to open so as to allow carbon-dioxide from the gas canister to flow into the bottle to carbonate the liquid; and a retractor configured to interact with the carbonation lever such that when the carbonation lever assumes the carbonation position the retractor retracts during a predetermined period of time from an initial deployed state to a retracted position, so as to cause the plunger to move to the closed position and cause the valve to close.

Abstract: A carbonation machine may include a carbonation head with a bottle holder configured to hold a bottle with water to be carbonated and inject carbon dioxide into the bottle; and a safety dual valve assembly comprising a first spring operated piston and a second spring operated piston, for releasing excess pressure when the bottle is held by the carbonation head, wherein the first spring operated piston is configured to release excess pressure at a first pressure threshold level and wherein the second spring operated piston is configured to release excess pressure at a second pressure threshold level, wherein the first pressure threshold level is lower than the second pressure threshold level.

Abstract: A carbonation machine includes a carbonation head to sealingly couple to a bottle filled with liquid to be carbonated; a piping to introduce and compress carbon dioxide into a space within the bottle above a top surface of the liquid to a predetermined pressure level when the bottle is coupled to the carbonation head; a stirrer to stir the liquid to enhance absorption of carbon dioxide in the liquid when the bottle is coupled to the carbonation head; and a manually operated valve mechanism configured to be moved to any position between a closed position to an open position for user-controlled release of pressure within the space.

Abstract: An automatic mechanism for operating sliding doors or windows, e.g., for fully or partially closing and fully or partially opening sliding doors or windows. Each of a plurality of sliding panes of doors or windows may comprise a corresponding automatic mechanism that may be operated independently of any of the other automatic mechanisms.