Abstract: An escapement for a timepiece movement includes a toothed escape wheel, a balance and a detent respectively pivoted on rotation axes. The detent supports a pallet lock that interacts with the first tooth of the escape wheel along a certain length of penetration in order to block it in an idle phase during which the balance executes a free arc of oscillation. An impulse pallet rotationally driven by the balance interacts with a second tooth when the detent is pivoted in order to release the escape wheel, this wheel turning by a forward pitch before being blocked again by the pallet lock by interaction with the second tooth. The escapement also includes a limiting plate, which is coaxial and rotationally secured to the balance, has a periphery including a substantially circular main portion and a cutout positioned facing the pallet lock in the release phase.

Abstract: An escapement for a timepiece movement includes a toothed escape wheel, a balance and a detent respectively pivoted on rotation axes. The detent supports a pallet lock that interacts with the first tooth of the escape wheel along a certain length of penetration in order to block it in an idle phase during which the balance executes a free arc of oscillation. An impulse pallet rotationally driven by the balance interacts with a second tooth when the detent is pivoted in order to release the escape wheel, this wheel turning by a forward pitch before being blocked again by the pallet lock by interaction with the second tooth. The escapement also includes a limiting plate, which is coaxial and rotationally secured to the balance, has a periphery including a substantially circular main portion and a cutout positioned facing the pallet lock in the release phase.

Abstract: The heat exchanger system is provided with a second duct part in communication with and downstream of the mixing chamber as well as a helical tube heating surface in the second duct part for conveying a working medium in heat exchange with the hot gas. A pair of branch ducts extend upwardly from the first duct part for the hot gas with the centrally disposed branch duct serving as a bypass for the hot gas. A restrictor in the form of a valve is provided at the upper end of the central branch duct to control the flow of hot gas therefrom into a mixing chamber.