Robert J Stark

US Patent:

46321489, Dec 30, 1986

Filed:

Sep 5, 1985

Appl. No.:

6/773374

Inventors:

Robert G. Stark - Seattle WA
Tom Stark - Sedro Wooley WA
Robert G. Stark - Portland OR
Joseph W. Anderson - Bellevue WA

International Classification:

F16K 1102

US Classification:

13762418

Abstract:

A hydraulic distribution valve having two substantially identical, molded plastic shells which are joined at their peripheries to form the distribution valve housing. A shaft is journaled within the housing and extends through one of the shells. A rotor is coupled to the shaft and is rotatably disposed within a rotor chamber defined by the housing. Each shell additionally defines a plurality of axially disposed cavities, where at least two of the cavities of the second shell communicate with the rotor chamber. The second shell also defines an inlet which communicates through a gallery which passes through a portion of the shaft and rotor for communication between the inlet and a control port which is defined by the rotor. The shaft and rotor can be rotated to align the exhaust port with a selected cavity to permit communication between the inlet and the selected cavity.

US Patent:

45744041, Mar 11, 1986

Filed:

Feb 21, 1984

Appl. No.:

6/581919

Inventors:

Robert G. Stark - Seattle WA

International Classification:

E04H 318

US Classification:

4505

Abstract:

A movable, submersible, transversely extending bulkhead for use in a swimming pool. The bulkhead has an elongated hollow body with top, bottom, end and side walls and a pair of spaced air chambers positioned toward each of its ends. Positioned between and substantially equidistant from each of the air chambers is at least one core of buoyant material. The bulkhead also utilizes means for selectively controlling the quantity of air and water within the chambers for regulating the buoyancy of the bulkhead. The bulkhead may be moved along the length of a swimming pool through increasing the buoyancy of the bulkhead by displacing the water contained in the chambers, shifting the bulkhead to a new longitudinally spaced position within the pool, and decreasing the buoyancy of the bulkhead by allowing water to reenter the chambers.

US Patent:

39355993, Feb 3, 1976

Filed:

Jul 31, 1974

Appl. No.:

5/493471

Inventors:

Robert Stark - Seattle WA

International Classification:

E04H 318

US Classification:

4172

Abstract:

A hollow fiberglass bulkhead is constructed for submersion in a swimming pool. Two boxes open-top and open-ended are joined, a shelf is added, end supporting hardware is added, a bottom is placed on the box and the ends are closed and the box is then inverted to be installed in the swimming pool. Balsa wood plates provide rigidity and partial flotation while two end rollers prevent the bulkhead from becoming twisted as it is moved along the pool.

US Patent:

50143700, May 14, 1991

Filed:

Apr 26, 1989

Appl. No.:

7/343434

Inventors:

Robert Stark - Seattle WA

International Classification:

E04H 318

US Classification:

4505

Abstract:

A bulkhead is illustrated with sockets through the top deck and an intermediate platform to provide a box-frame structural strength to the bulkhead and to receive pool attachments for swimming activities, such as diving platforms or water polo goals. Another invention is the provision of tongue members for joining separate sections of a bulkhead which is assembled together at the swimming pool site. These tongue members can be longitudinal tongue members protruding from one or the other of the sections or they can be transverse tongue members which are on each section and are secured together. There is also an invention of access ports through both the top deck and the intermediate platform of a hollow swimming pool bulkhead for providing access to the interior of the bulkhead.

US Patent:

49063685, Mar 6, 1990

Filed:

Nov 13, 1985

Appl. No.:

6/797691

Inventors:

Robert G. Stark - Seattle WA
Robert G. Stark - Kirkland WA
Janet S. Ellis - Edmonds WA
Tom Stark - Sedro Wooley WA

International Classification:

B01D 3530

US Classification:

210279

Abstract:

An apparatus for use in conjunction with a pressure vessel, having a tubular conduit extending into the interior of the pressure vessel. The outer end of the conduit is rigidly fixed to one end of the pressure vessel in a pressure-tight connection. The inner end of the conduit is attached to a saddle at the other end of the pressure vessel, where the saddle is adapted to slidably receive the conduit such that upon expansion of the pressure vessel due to pressurization, the conduit will move independently relative to the saddle.

US Patent:

46274669, Dec 9, 1986

Filed:

Sep 5, 1985

Appl. No.:

6/773373

Inventors:

Robert G. Stark - Seattle WA
Robert G. Stark - Portland OR
Tom Stark - Sedro Wooley WA
Joseph W. Anderson - Bellevue WA

International Classification:

F16K 11044
F16K 31145
F01B 1900
F16J 302

US Classification:

1376255

Abstract:

A valve made from substantially all plastic parts that has integrally molded valve seats. A unique valve disk comprises two identical, mirror-image, molded plastic parts. The parts are of thin-walled construction but are joined together to give the valve body a substantially thick cross section with elongated shear surfaces in the radial direction. End flanges on the seal disk parts mechanically trap the soft sealing material and provide the maximum depth along the force line of contact between the sealing seat and the seal disk. The valve body has a cylinder and a cylinder cap of identically molded, mirror-image parts which house a diaphragm that overlies a plastic domed piston. The domed piston is provided with radially spaced circular ribs for supporting the diaphragm against excess deflection.

US Patent:

49692194, Nov 13, 1990

Filed:

Feb 16, 1990

Appl. No.:

7/484435

Inventors:

Robert Stark - Seattle WA

International Classification:

E04H 414

US Classification:

4505

Abstract:

A swimming pool bulkhead is provided with sets of transversely spaced buoyancy chambers for providing stability against rotation about the lengthwise axis of the bulkhead when the chambers are inflated. The bulkhead is made of two separate short sections which are transported separately and bolted together at the pool.

US Patent:

45881065, May 13, 1986

Filed:

Dec 5, 1983

Appl. No.:

6/558345

Inventors:

Robert G. Stark - Seattle WA
Robert G. Stark - Kirkland WA
Janet S. Ellis - Edmonds WA
Tom Stark - Sedro Wooley WA

International Classification:

B65D 9002

US Classification:

220414

Abstract:

A pressure vessel having two separately formed vessel halves which are joined to form a compartment along a juncture, one of the halves further having a service port of a size sufficient to allow an individual to fully enter the vessel for working therein. The compartment is sealed at the juncture by a bonding layer surrounding both sides of the juncture inside and outside of the compartment, and is then wrapped circumferentially with tensioned, resin-wetted fiberglass filament. The vessel may have at least one fitted conduit which communicates with the interior of the compartment, the outer surface of the conduit adjacent to the compartment having an irregular surface which has been wrapped with resin-wetted, tensioned fiberglass filament. The juncture between the conduit and the compartment is overlayed with a layer of fiberglass material and subsequently coated with resin to form a rigid, fluid-tight seal. Resin-wetted fiberglass filaments are then wrapped circumferentially around the vessel, and additional resin is applied.