TIMOTHY DAVID JOHNSON
Vehicle Board in Erie, PA

6467502, Oct 22, 2002

Jul 26, 2000

09/626049

Timothy L. Johnson - Erie PA
Christopher C. Knoll - Fairview PA
Anthony Medina - Erie PA

Snap-Tite Technologies, Inc. - Wilmington DE

F15B 13044

13759617

A manifold assembly and method of making the same is disclosed. The manifold assembly is preferably made of a polymer. A mold is used to make the manifold portion of the manifold assembly such that small diameter passageways and valve seats are formed enabling use of small solenoids. Since pressure is applied to small diameter plunger seals (valves) driven by solenoid plungers, small solenoids may be used because the force on the solenoid plungers is correspondingly low. The manifold assembly is comprised of a manifold portion and a plug portion. The manifold portion, as disclosed, has an inlet port for the supply of air pressure. An inlet housing in which an inlet solenoid is housed, a supply port for supplying air to or exhausting air from a reservoir, and an exhaust housing in which an exhaust solenoid is housed are connected to a chamber. The chamber which interconnects the housings and supply port is enclosed by the plug portion which is ultrasonically welded to the manifold portion.

6386221, May 14, 2002

Apr 5, 2001

09/827377

Christopher C. Knoll - Fairview PA
Timothy L. Johnson - Erie PA
Anthony Medina - Erie PA

Snap-Tite Technologies, Inc. - Wilmington DE

F15B 13044

137 1521, 1374542, 137580, 13762565

A solenoid valve is mounted in the bore of a ferromagnetic journal. Mounting the solenoid valve in the journal conserves space on the firewall of a vehicle where the solenoid is typically located. Journal mounting also minimizes the length of the air line necessary to supply air to the solenoid valve. Use of a ferromagnetic journal as part of the magnetic circuit allows full use of the journal bore for the components of the solenoid valve. A leak vent path is provided as well as a principal vent path in the flux flanges of the solenoid valve. The solenoid valve controls the flow of air through a seal which engages a rotating coupling of a clutch which operates a fan.

6075353, Jun 13, 2000

Mar 12, 1998

9/042389

Timothy L Johnson - Erie PA
Silverio S Leandro - Cambridge Springs PA

Snap-Tite Technologies, Inc. - Wilmington DE

G05F 156, H02M 3335

323285

A power circuit for controlling the amount of power delivered to a solenoid coil is disclosed. A current mode pulse width modulation controller is employed to interrupt the flow of current through a power branch of the circuit. A rectifying bridge enables use of the power circuit with either AC or DC power sources. The power circuit includes a startup current source for initially energizing the pulse width modulation controller. Two feedback voltages, one representing the compensated current through the power branch of the circuit and one representing the output voltage of the power circuit are used by the pulse width modulation controller to output pulses of varying duration at constant frequency to a field effect transistor. The opening of the field effect transistor interrupts the flow of current in the power branch of the circuit.

4394262, Jul 19, 1983

Aug 6, 1982

6/406580

Ronald G. Bukowski - Erie PA
Timothy L. Johnson - Erie PA

Zurn Industries, Inc. - Erie PA

B01D 2938

210103

An automatic backwashing strainer system is provided for cleaning a strainer with a minimum amount of backwash water. The system includes a long time mode and a short time mode of operation in which the backwashing operation is conducted periodically with a variable duration and a variable cycle time. The system also includes a differential pressure mode of operation in which the backwashing is conducted whenever the pressure drop across the strainer exceeds a predetermined upper limit and continues for a variable time delay after the pressure drop reaches a predetermined lower limit. The particular durations, cycle times, time delays, and modes utilized to control the backwashing are selected in response to the operating conditions of the strainer system.

6050542, Apr 18, 2000

Jun 3, 1998

9/089694

Timothy L. Johnson - Erie PA
Christopher D. Cedzo - Erie PA

Snap-Tite Technologies, Inc. - Wilmington DE

F16K 3102, F03B 3100

25112915

A solenoid valve employing a coil can cover and a top cover residing between the bobbin, the stop and the plunger is disclosed. The coil can cover and top cover perform efficiently resulting in less saturation and hysterisis. Low power operation is achieved. A plug valve and seal arrangement are provided in one end of the plunger to operate in conjunction with a square edged orifice formed at the exit of the body. A linear flow characteristic is achieved over mid range throttle positions which facilitate the flow control of natural gas, and propane and other such fuels at low pressures.

6012700, Jan 11, 2000

Oct 22, 1998

9/177263

Timothy L. Johnson - Erie PA
James W. Neuburger - Fairview PA

Snap-Tite Technolgoies, Inc. - Wilmington DE

F16K 3106

25112915

A solenoid valve including a body, plunger, stop, bobbin, coil, and strap is disclosed. One embodiment is a normally open solenoid valve and one embodiment is a normally closed solenoid valve. The bobbin, coil and strap are encapsulated by a glass-filled nylon cover. The strap and the glass-filled nylon restrain the stop. A body is ultrasonically welded to the glass-filled nylon cover. In the normally open embodiment a first body has a single port. In the normally closed embodiment a second body has two ports. The plunger includes grooves and sections of reduced diameter, or channels, which allow for communication between the stop and the body. A method for making the solenoid valve is also disclosed and claimed.

6076803, Jun 20, 2000

Mar 12, 1999

9/267558

Timothy L. Johnson - Erie PA
Albert J. Pristera - Fairview PA

Snap-Tite Technologies, Inc. - Wilmington DE

F16K 3102

25112922

A solenoid valve is disclosed which includes a solenoid assembly, an axial flow chamber and inlet and outlet housings secured to the axial flow chamber. The axial flow chamber comprises a generally cylindrically shaped inner portion and a cylindrically shaped outer portion spaced radially apart from the inner portion and connected to the inner portion by a web forming at least one passageway through the axial flow chamber. The solenoid assembly resides generally within the inner portion of the axial flow chamber and is further restrained by the inlet housing. The inlet and outlet housings are secured to the axial flow chamber.