Hans J Hofmann

Author:

Hans Wolfgang Hofmann

ISBN #:

3486213415

Author:

Hans Wolfgang Hofmann

ISBN #:

3486266411

Author:

Hans Wolfgang Hofmann

ISBN #:

3821900180

Author:

Hans Hofmann

ISBN #:

0807615269

Author:

Hans Hofmann

ISBN #:

0818001291

Author:

Hans Hofmann

ISBN #:

0847823806

Author:

Hans Hofmann

ISBN #:

0870991191

Author:

Hans Hofmann

ISBN #:

0870999125

US Patent:

44719132, Sep 18, 1984

Filed:

Mar 15, 1982

Appl. No.:

6/357991

Inventors:

Hans J. Hofmann - Nashua NH

Assignee:

Spraco, Inc. - Nashua NH

International Classification:

B05B 120

US Classification:

239550

Abstract:

A spray shower (10) is equipped with flat fan nozzles (17), having a dome shaped indentation (21) directed to the pipe inside, and located inside a nozzle base (12), attached to the outer surface of the pipe wall, at which the adjustment at the nozzle discharge orifice (22) in relation to the longitudinal axis (24) of the spray-shower (10) results from a corresponding fixation of the nozzles (17) inside the nozzle base (12). The flat fan nozzle has at the outer circumference several sides (20) and on the inner circumference of the nozzle base (12) are tip stretched corresponding sides (19) used as stops for the sides (20) of the flat fan nozzles (17). An arrangement of the spray-shower in such a manner obtains the advantage of a quick and problemless assembly of the flat fan nozzles in the required exact position, without the need for special skills of the assembler. Time consuming controls of the exact position of the nozzle discharge orifice after assembly and eventual correction is no longer necessary. In addition, the arrangement of the spray-shower conforming to the invention simplifies eventual changes of flat fan nozzles (in case of wear or clogging).

US Patent:

62502247, Jun 26, 2001

Filed:

Nov 16, 1999

Appl. No.:

9/441413

Inventors:

Hans J. Hofmann - Acworth GA
Mark A. DiRico - Mansfield MA

International Classification:

B41F 2306

US Classification:

1014242

Abstract:

A powder sprayer unit which provides improved spraying of powder onto printed sheets of material produced in printing presses. The powder sprayer includes a source of pressurized fluid, a source of powder, a mixer and a distributor. The mixer includes at least one fluid inlet positioned to receive fluid from the fluid source, and at least one powder inlet positioned to receive powder from the source of powder to mix the fluid and the powder forming a fluid/powder mixture. The distributor-includes a disperser positioned to disperse the mixture as it flows to a plurality of nozzles. The nozzles are positioned to spray the dispersed mixture onto specified areas of printed sheets of material having passed through the printing press.

US Patent:

47068892, Nov 17, 1987

Filed:

Jun 8, 1982

Appl. No.:

6/386308

Inventors:

Hans J. Hofmann - Nashua NH

Assignee:

Spraco, Inc. - Nashua NH

International Classification:

B05B 1302

US Classification:

239550

Abstract:

A spray-shower pipe is equipped with flat fan nozzles having a dome-shaped indentation directed to the pipe inside and located inside a nozzle base formed with a recess that conforms with and engages the outer surface of the pipe wall and an annular extension of length corresponding to the pipe wall thickness at the circumference of the opening in which the extension is snugly seated. The front surface of the extension facing the inside of the pipe has a curvature which corresponds to the curvature of the pipe wall inside surface. The dome-shaped indentation is formed with an aperture that forms an angle with the longitudinal axis of the pipe that is slightly less than 90. degree. , typically 83. degree.