Robert R Zimmerman

US Patent:

54840791, Jan 16, 1996

Filed:

Mar 13, 1995

Appl. No.:

8/402920

Inventors:

Thomas G. Carter - Kent OH
Douglas M. Horner - Gates Mills OH
Robert L. Zimmerman - Cleveland OH
Robert J. Pristas - Chardon OH
James C. Murphy - Chardon OH

Assignee:

Essef Corporation - Chardon OH

International Classification:

F16L 5504

US Classification:

220589

Abstract:

A hydropneumatic filament-wound pressure vessel is disclosed. The vessel has first and second cup-shaped tank liners having circular open mouths which are provided with a seal and diaphragm assembly. The seal assembly includes a pocket formed by an inner wall and shelf associated with the first liner and a ledge associated with the second liner. The shelf, ledge and cylindrical wall cooperate with an inner surface of the second liner to provide an O-ring pocket. An O-ring is provided in the pocket and the O-ring defines the periphery of a flexible diaphragm which divides the interior of the liners into separate pressure chambers. A continuous filament is wound over the surface of the liners in an isotensoid pattern. Each liner has a geodesic dome surface extending between a diameter of the liner and a polar opening. The dome surface is defined by oppositely curving surfaces of revolution of a meridia joined by an inflection point.

US Patent:

49262980, May 15, 1990

Filed:

Feb 27, 1989

Appl. No.:

7/315549

Inventors:

Robert C. Zimmerman - Manlius NY

Assignee:

Hollowick, Inc. - Manlius NY

International Classification:

F21L 1902
F21V 3500

US Classification:

362163

Abstract:

A table lamp having a pedestal and globe each with circular cross-sections has 12 vertical slots cut in the upper edge of the pedestal at 30 degree intervals and 3 inwardly projecting lugs on said globe arranged to engage in 3 of said slots with no more than 30 degrees rotation of the globe relative to the pedestal. The stability of the assembly is improved while retaining the simplicity of use of prior devices.

US Patent:

52287718, Jul 20, 1993

Filed:

Mar 23, 1992

Appl. No.:

7/856297

Inventors:

Robert C. Zimmerman - Manlius NY

Assignee:

Hollowick, Inc. - Manlius NY

International Classification:

F21L 1900

US Classification:

362171

Abstract:

A table lamp that utilizes a fuel cell having a hollow glass or plastic envelope that includes an elongated body section joined to an expanded base by a pinched neck, and a flame shield mounted upon the top of the body section. The fuel cell has an elongated fuel container that rests upon the pinched neck of the envelope and a burner that is positioned within the flame shield. The flame shield has a top opening that permits the fuel cell to be inserted or removed from the envelope therethrough. A shade may be removably mounted upon the flame shield and a decorative insert slidably positioned between the fuel cell and the body of the envelope.

US Patent:

55250556, Jun 11, 1996

Filed:

Mar 2, 1995

Appl. No.:

8/398958

Inventors:

J. Alan Menter - Manlius NY
Robert C. Zimmerman - Manlius NY

Assignee:

Hollowick, Inc. - Manlius NY

International Classification:

F23D 324

US Classification:

431320

Abstract:

A cap for closing the burner of a liquid fuel cell and protecting the burner wick. The burner wick has upraised adjustable tabs that can be separated to control the heat output of the cell. The cap contains a die member that is arranged to move between the tabs when the cap is closed over the burner to position the tabs at a desired standard heat setting that is best suited for a majority of fuel cell applications.

US Patent:

D3189279, Aug 6, 1991

Filed:

Jun 16, 1989

Appl. No.:

7/367103

Inventors:

Douglas Cleminshaw - Tully NY
Robert C. Zimmerman - Manlius NY
J. Alan Menter - Manlius NY

Assignee:

Hollowick, Inc. - Manlius NY

US Classification:

D26 11