Harold Blumhardt

US Patent:

44416555, Apr 10, 1984

Filed:

Mar 6, 1981

Appl. No.:

6/241415

Inventors:

Harold Blumhardt - Ashley ND

Assignee:

Blumhardt Manufacturing Co. - Ashley ND

International Classification:

B05B 120

US Classification:

239163

Abstract:

Sprayer apparatus for agricultural applications is disclosed. The sprayer apparatus disclosed includes spring-biased, damped booms having an inner portion with a parallelogram form. The individual booms have two points of articulation and they are spring-biased to a center position to permit breakaway. A linkage is provided which tends to list the outer section of each boom during breakaway.

US Patent:

42237416, Sep 23, 1980

Filed:

Mar 3, 1978

Appl. No.:

5/883275

Inventors:

Harold Blumhardt - Ashley ND

Assignee:

Blumhardt Mfg., Inc. - Ashley ND

International Classification:

A01B 6322
A01B 3700
A01B 7300

US Classification:

172240

Abstract:

A vehicle to be moved in either of two mutually perpendicular directions, and including a first plurality of caster wheels, a second plurality of wheels rotatable on parallel axes to follow a common track aligned with one of the directions, apparatus for moving said second plurality of wheels into and out of contact with the ground, and coupling members for applying tractive force to the vehicle in either of said directions.

US Patent:

41281071, Dec 5, 1978

Filed:

Mar 1, 1977

Appl. No.:

5/773200

Inventors:

Harold Blumhardt - Ashley ND

Assignee:

Blumhardt Mfg., Inc. - Ashley ND

International Classification:

F16K 4300

US Classification:

137318

Abstract:

An outlet fitting construction for thin-walled, flexible plastic tubing for fluid distribution systems. The outlet fitting includes first and second outlet members that in the preferred embodiment are threadedly engaged and have aligned axial passageways. One outlet member is provided with an annular rim with a riding surface that facilitates insertion of the outlet fitting into an aperture in the flexible surface irrigation tubing. In an alternative embodiment a tube piercing member is provided that is engaged with the outlet members so that the outlet fitting may be inserted into a tube which does not have pre-existing apertures.