Walter Allen Plummer

US Patent:

49449761, Jul 31, 1990

Filed:

Feb 17, 1989

Appl. No.:

7/312735

Inventors:

Walter A. Plummer - Santa Ana CA

Assignee:

The Zippertubing Co. - Los Angeles CA

International Classification:

F16L 900

US Classification:

428 369

Abstract:

This protective jacket of electrical conductors, tubing or the like has a semi-rigid generally tubular sheet body with male and female seam locking members along opposite lateral edges. A single barb-like hook on the male member engages a complementary pocket in the female member for securely interconnecting the edges and closing the seam. The jacket and seam closing members are integrally extruded and have sufficient stiffness that when the seam is closed, the jacket is in hoop tension.

US Patent:

55458440, Aug 13, 1996

Filed:

Aug 3, 1993

Appl. No.:

8/101902

Inventors:

Walter A. Plummer - Santa Ana CA
Vernon L. Shrader - Laguna Hills CA
Laurence R. Klein - Torrance CA

Assignee:

The Zippertubing Company - Los Angeles CA

International Classification:

H05K 900

US Classification:

174 35MS

Abstract:

An electrical shielding chamber has six electrically conductive rigid walls in electrical contact with each other. A first wall forms a first door and a second wall forms a second door, each of which is selectively attachable to at least three other walls. The chamber is collapsible for forming a substantially flat package, and expandable for forming a substantially electrically-shielded compartment.

US Patent:

50386638, Aug 13, 1991

Filed:

Sep 16, 1983

Appl. No.:

6/532708

Inventors:

Walter A. Plummer - Sherman Oaks CA

International Classification:

D04C 112

US Classification:

87 6

Abstract:

This invention relates to protective and appearance sleeving, and more particularly to improved expandable-contractible braided sleeving having a pull cord extending lengthwise of its interior one end of which is attachable to an object to be enshrouded while the sleeving is being assembled thereover. The pull cord may comprise a strip of high strength material imprintable with indicia.

US Patent:

47912367, Dec 13, 1988

Filed:

Jul 10, 1987

Appl. No.:

7/072216

Inventors:

Laurence R. Klein - Torrance CA
Walter A. Plummer - Santa Ana CA

Assignee:

The Zippertubing Co. - Los Angeles CA

International Classification:

H01B 734

US Classification:

174 36

Abstract:

An electrically conductive removable jacket is provided for wire bundles or the like. The jacket comprises a flattened knitted metal wire tube with a strip of hook and loop fastener stitched along each longitudinal edge so that a tubular jacket is formed by overlapping the edges and securing the fasteners. Plural strips of hook and loop fastener assure that the jacket can be kept electrically "closed" regardless of the size of bundle encompassed. A resilient gasket is provided along one edge of the conductive jacket for making electrical contact with the opposite edge. The conductive jacket may be secured along one edge to one edge of a flexible electrically insulating jacket having fastening means along each edge for forming a tubular insulating jacket. The insulating jacket is inside of the conductive jacket.

US Patent:

47410876, May 3, 1988

Filed:

Jan 13, 1986

Appl. No.:

6/817868

Inventors:

Walter A. Plummer - Sherman Oaks CA

International Classification:

D03D 302

US Classification:

29446

Abstract:

Disclosed is a method of making pre-expanded braided sleeving from flexible strands of either conductive or nonconductive filaments, or a combination thereof, along with entrapped warp filaments of heat shrinkable material. The warp filament material is commonly known as heat reactive material and, when briefly subjected to heat below its fusion temperature, shrinks in the order of 30% to 50% of its length and very substantially expands the sleeving thereby greatly expediting the assembly thereof over an elongated object. Thereafter the sleeving is readily contracted into a snug fit with the object upon being tensioned between its opposite ends.

US Patent:

46004548, Jul 15, 1986

Filed:

Apr 15, 1985

Appl. No.:

6/723499

Inventors:

Walter A. Plummer - Tustin CA

International Classification:

H01B 1322

US Classification:

156 55

Abstract:

Disclosed is a unitary re-enterable shielded jacket assembly for a plurality of insulated conductors provided with a dielectric spacer of nonconductive netting arranged and effective to provide a layer of air cells between the jacket shielding and the embraced conductors thereby to stabilize the impedance of the cable assembly from end to end thereof. One lateral edge of the dielectric spacer is attached to the jacket adjacent the inner shielding layer thereof and is sufficiently wide for its opposite edges to overlap when the jacket seam is closed. The dielectric spacer may be pleated lengthwise thereof to provide pockets for separate ribbon cables, the pleats being interconnected by hinges formed by groups of severed transverse strands which groups are separated by at least one unsevered transverse strand.

US Patent:

42522587, Feb 24, 1981

Filed:

May 10, 1979

Appl. No.:

6/037753

Inventors:

Walter A. Plummer - Tustin CA

International Classification:

B26F 302

US Classification:

225 25

Abstract:

A gang tape dispenser for a multiplicity of dissimilar rolls of pressure sensitive tape selectively usable at the user's option. Each roll may bear a roll of distinctive symbols dissimilar from those on the other rolls enabling the user to employ strips alone or in any of a profusion of combinations for coding and identifying and the like purposes. The tape rolls are housed in aligned storage cells having dispensing ports facing a common severing blade. The dispenser can be bench mounted or suspended on a workman's belt.

US Patent:

39556018, May 11, 1976

Filed:

Apr 7, 1975

Appl. No.:

5/565623

Inventors:

Walter A. Plummer - Tempe AZ

Assignee:

Moore Business Forms, Inc. - Niagara Falls NY

International Classification:

F16L 914
F16L 900

US Classification:

138149

Abstract:

A laminated heat insulating jacket for conduits having a self-locking separable plastic seam for holding the jacket assembled about a fluid conveying conduit and more particularly a conduit of the type embraced by a heat tracer tube helpful in heating the fluid conduit and its contents. The exterior layer or main body of the jacket comprises suitable impervious plastic strip material equipped along its lateral edges with separable seam forming members. Laminated to the main body strip are one or more layers of resilient heat insulating material and an exposed layer of foil-like heat conducting and heat reflective material serving to minimize heat losses from the conduit and to distribute heat from a heat tracer tube to adjacent areas of a fluid conduit embraced thereby.