Krystyn Teresa Motykiewicz

51617781, Nov 10, 1992

Sep 30, 1991

7/767486

Krystyn Motykiewicz - Southington CT

Rostra Precision Controls, Inc. - Waterbury CT

F16K 148
F16K 3106

25112915

Solenoid valve employing a loosely mounted rubber insert in a confining recess of the plunger for sealing an inlet port during closed condition of the valve. In case of adherence at the sealing surface of the inlet port with the rubber insert, initial acceleration of the plunger establishes an inertia impact to effectively break the bond, even at extremely low temperature.

50103121, Apr 23, 1991

Apr 10, 1990

7/507025

Krystyn Motykiewicz - Southington CT

Rostra Engineered Components - Waterbury CT

H01F 708

335261

A solenoid actuator that includes a ferromagnetic armature body mounted for movement through a defined stroke in the direction of its central axis. A stator includes an electrical coil surrounding the axis of the armature, and a ferromagnetic stator body having a first portion axially opposed to the armature body and a second portion radially surrounding and spaced from the armature body. A ferromagnetic ring is positioned on the armature body radially adjacent and opposed to the second portion of the stator body. The opposed surfaces that define the air gap between the armature ring and the stator body are of identical conical construction and overlap each other as viewed in the axial direction.