Veeder Industries, Inc.

Other

John G Gamble

Arnold C Johnson

Robert C Clapp

Edward F Gebelein, Jr

A normally closed AC relay with a stator core with primary and shaded poles, a pivotal clapper, an elongated leaf spring fixed to the clapper providing a clapper return spring and a clapper overtravel spring extending radially outwardly from the outer end of the clapper, the overtravel spring being substantially narrower than the rest of the leaf spring to reduce the weight and moment of inertia of the overtravel spring and the complete clapper assembly, the overtravel spring having a spring rate significantly greater than the return spring and both the overtravel spring and clapper assembly having a natural frequency significantly greater than twice the frequency of the AC source so that the clapper is actuated to open the relay without incipient switch chatter.

Snap-acting normally closed AC relay

A normally closed AC relay having a stator core with primary and shaded poles, an operating coil mounted on the stator core to magnetically attract a pivotal clapper in one pivotal direction thereof toward the stator pole against the bias of a return spring, the clapper and/or stator core having a reduced transverse section in the magnetic loop of the operating coil with a cross-sectional area equal to or less than that of the primary pole to control the magnetic field across the working air gap by magnetic saturation of the reduced section.

Normally closed AC relay

A vane-type galvanometer employs a stator having a unibody type structure. Narrow bridge regions of the stator are magnetically saturated to produce regions of high magnetic reluctance and salient magnetic poles in the stator. A pre-wound bobbin is mounted to the stator for generating a control flux to thereby exert a torque on a vane armature.

Rotary displacement motor

An electromagnetic counting mechanism having a rotary counter and an electromagnetic operator with a pivotal clapper adapted to be magnetically actuated for indexing the counter. The clapper has a primary air gap and a tangential projection which cooperates with an edge of a pole of the electromagnet to provide a secondary air gap to reduce the rate of increase of magnetic force as the clapper is pivoted to its closed gap position and so that the magnetic force/clapper displacement curve has a generally flattened slope less than that of the return spring force/clapper displacement curve for stable pivotal operation of the clapper with a shaped drive pulse.

Electromagnetic counting mechanism

A clock with a rotary drive motor having a pair of axially aligned stator subassemblies with identical molded frame parts with interfitting end portions rotatably supporting a permanent magnet rotor and take-off gears. A separate axially extending U-shaped pole piece is mounted on each frame part to provide four stator poles equiangularly spaced about the axis of the rotor, and each frame part forms a coil bobbin for winding a stator coil for the respective pole piece.

Rotary electric motor

A rotary electromagnetic indicator having a stator with an annular arrangement of five equiangularly spaced radially inwardly extending salient poles, a winding on each stator pole and an indicating rotor having a permanent magnet with diametrically opposed north and south salient poles, each having an angular width equal to the included angle of a pair of adjacent salient poles of the stator.

Rotary electromagnetic indicator

An electromagnetic counter with a rotary counter and an electromagnetic operator for indexing the counter having a generally U-shaped core plate mounted in opposed pockets in parallel end supports of a plastic support frame, an energizing winding on one of the parallel legs of the core plate, and a pivotal actuator connected for indexing the counter having a ferromagnetic armature member positioned aside and extending transversely of the parallel legs of the core plate. A ferromagnetic insert having a preselected configuration and permeability is inserted through a slot in the support frame and press fit between the parallel legs of the core plate to provide a saturable magnetic shunt for preventing electromagnetic operation of the counter by electrical noise spikes of relatively short duration and to provide an air gap filler for reducing the incipient air gap of the electromagnet.

Growing community of inventors

Simsbury, CT, United States of America

John G Gamble