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US 4,308,606 AGranted
Clock with rotary pendulum
AssigneeKundo-Kieninger & Obergfell
InventorWolfgang Fehrenbacher
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AssigneeKundo-Kieninger & Obergfell
InventorWolfgang Fehrenbacher
Estimating the term…
A rotary pendulum without time-keeping function, comprising an inertial body suspended from a clockwork housing of a preferably electronically driven timepiece through the intermediary of an elongate torsion spring, is periodically accelerated by the impact between a vane on the spring and radial camming teeth of an impeller wheel frictionally entrained on a horizontal seconds shaft of the timepiece via a spiral spring anchored to that shaft. The vane, near the upper end of the torsion spring, oscillates only through a half-cycle limited on the return swing by an abutment on the clockwork housing. The inertial body is secured to a latch member at the lower end of the torsion with the aid of a coupling ring on which a drag ring is rotatably mounted, the latter carrying a radial fin engageable with a fixed stop pin as well as with a peripheral lug on the coupling ring whereby the body can turn through almost two full revolutions before being positively arrested. The upper end of the torsion spring is anchored to the housing through a vertically guided coil spring designed to absorb axial shocks; the inertial body is provided at its underside with a central stud received with clearance in a guide bore of an underlying base on which it bottoms whenever such shocks reach a certain intensity.
In a timepiece comprising a clockwork in a housing provided with mounting means and a rotary pendulum including an inertial body suspended from said mounting means by an elongate element having a lateral extension coacting with clockwork-driven impeller means periodically imparting thereto a unidirectional impulse for sustaining rotational oscillations of said inertial body about a vertical axis,
In a timepiece comprising a clockwork in a housing provided with mounting means, an elongate torsion spring having an upper extremity nonrotatably secured to said mounting means, an inertial body attached to a lower extremity of said torsion spring and forming therewith a rotary pendulum overhanging a base which is part of said housing, and impeller means driven by said clockwork for periodically imparting a unidirectional impulse to a lateral extension of said torsion spring for sustaining rotational oscillations of said pendulum about a vertical axis,
In a timepiece comprising a clockwork in a housing provided with mounting means, an elongate torsion spring having an upper extremity nonrotatably secured to said mounting means, an inertial body attached to a lower extremity of said torsion spring and forming therewith a rotary pendulum overhanging a base which is part of said housing, and impeller means driven by said clockwork for periodically imparting a unidirectional impulse to a lateral extension of said torsion spring for sustaining rotational oscillations of said pendulum about a vertical axis,
In a timepiece comprising a clockwork in a housing provided with mounting means and a rotary pendulum including an inertial body suspended from said mounting means by an elongate element having a lateral extension coacting with clockwork-driven impeller means periodically imparting thereto a unidirectional impulse for sustaining rotational oscillations of said inertial body about a vertical axis,
Dependencies are inferred from the claim text.