John R Gamble

US Patent:

52606775, Nov 9, 1993

Filed:

Aug 10, 1992

Appl. No.:

7/927596

Inventors:

John G. Gamble - Simsbury CT

International Classification:

H01H 5122

US Classification:

335 78

Abstract:

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.

US Patent:

40299805, Jun 14, 1977

Filed:

Feb 4, 1975

Appl. No.:

5/546938

Inventors:

John Griffith Gamble - Simsbury CT

Assignee:

Veeder Industries, Inc. - Hartford CT

International Classification:

H02K 2114

US Classification:

310112

Abstract:

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.

US Patent:

42283477, Oct 14, 1980

Filed:

Sep 25, 1978

Appl. No.:

5/945422

Inventors:

John G. Gamble - Simsbury CT

Assignee:

Veeder Industries Inc. - Hartford CT

International Classification:

G06M 110

US Classification:

235 92C

Abstract:

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.

US Patent:

40018156, Jan 4, 1977

Filed:

Jun 5, 1975

Appl. No.:

5/584218

Inventors:

John G. Gamble - Simsbury CT

Assignee:

Veeder Industries, Inc. - Hartford CT

International Classification:

G08B 500

US Classification:

340373

Abstract:

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.