Christopher O Irwin

US Patent:

46093400, Sep 2, 1986

Filed:

Aug 23, 1985

Appl. No.:

6/768585

Inventors:

Christopher Irwin - Adrian MI
Rudolf H. Poehlsen - Tecumseh MI

Assignee:

Hoover Universal, Inc. - Ann Arbor MI

International Classification:

B29C 4904
B29C 4720

US Classification:

425532

Abstract:

An accumulator head for blow molding machines having a diverter sleeve that cooperates with other components in the head to form annular concentric flow paths for plastic material between the inlet and outlet of the diverter sleeve to divide the plastic material into two arcuate paths which subsequently meet and split into two more arcuate paths in which plastic material flows in a reverse direction relative to the first two paths and is directed to the diverter outlet. The diverter sleeve thus insures intimate mixing of the plastic material and eliminates the likelihood of a weld line in the plastic material. In addition, the diverter sleeve is mounted for up and down movement with respect to the inlet for plastic material to thereby eliminate dead points in the plastic flow path and facilitate changeover from one material to another in the head.

US Patent:

50693450, Dec 3, 1991

Filed:

Sep 24, 1990

Appl. No.:

7/587085

Inventors:

Christopher Irwin - Adrian MI

Assignee:

Hoover Universal, Inc. - Plymouth MI

International Classification:

B65D 4132

US Classification:

220270

Abstract:

A single service container having a plastic body and a non-removable plastic cap. The cap and body are made of materials which are compatible to one another for recycling purposes. A tear strip is defined in the cap by a pair of score lines which extend substantially across the cap. By lifting a pulling member that is integrally formed with the tear strip, the tear strip separates from the remainder of the cap along the score lines and provides the container with an opening through which its contents may be consumed. In this manner, a container is provided which has no components that need to be separated prior to recycling.

US Patent:

46171665, Oct 14, 1986

Filed:

Aug 26, 1985

Appl. No.:

6/769540

Inventors:

Christopher Irwin - Adrian MI
Richard M. Bowen - Addison MI

Assignee:

Hoover Universal, Inc. - Ann Arbor MI

International Classification:

B29C 4904
B29C 4956

US Classification:

264531

Abstract:

A method and apparatus for blow molding articles with deeply recessed edges utilizing mold halves each of which consists of a center section and end sections that are relatively movable in a direction lengthwise of the mold to enable both lengthening and shortening of the mold. Rack and pinion assemblies are associated with the mold sections so that in response to movement of one end section toward or away from the center section, the other end section is similarly moved toward or away from the center section to thereby enable selective lengthwise lengthening or shortening of the mold halves. This enables the mold halves to be shortened after they are closed on a parison to thereby compress the shape of the parison within the mold to thereby move portions of the parison closer to the edges of the mold cavity. This facilitates a uniform distribution of plastic material along the surface of the mold cavity when the parison is blown into conformity with the mold cavity.

US Patent:

51039907, Apr 14, 1992

Filed:

Oct 29, 1990

Appl. No.:

7/604109

Inventors:

Christopher Irwin - Adrian MI

Assignee:

Hoover Universal, Inc. - Plymouth MI

International Classification:

B65D 4158

US Classification:

215320

Abstract:

A single service container having a hollow body and a cap with a portion extending interiorly of the body. The cap is mounted to seal a wide mouth style of opening formed at the upper end of the body. Interiorly of the mouth, a portion of the cap extends downwardly so as to cooperate with the positive internal pressure of the container and assist in sealing the cap on the body. A conical ring is formed on the periphery of the dome and engages an undercut interior surface adjacent to the mouth. The container further includes means for sealingly engaging the perimeter of the mouth. To open the container, a pulling member is pulled thereby severing the sealing engagements between the cap and the mouth, releasing the internal pressure and opening the container.