Class 29/6.2 - By use of reciprocating perforator

Subclass of Class 29 - Metal working
Definition: Process or apparatus including a tool which travels back
No. of patents: 28
Last issue date: 04/03/2012

Number	Title	Issue Date
8146218	Method for making solid edge gutter screen Method and apparatus for continuously forming a one-piece expanded metal gutter cover having at least one solid edge. The method involves feeding a continuous web of solid metal along a continuous path, expanding the continuous web as it is fed along the continuous ...	04/03/2012
7252325	Work vehicle cab screen A side screen for the cab of a work vehicle, such as a skid steer loader, comprises a panel having strips defining openings therebetween. A high percentage of the area of the screen is open for visibility. At least one reinforcing member, such as a rib, is formed in...	08/07/2007
7097914	Composite structural material, and method of producing the same A plate-shaped composite material has a first member and a second member. The first member is an expanded metal formed of a metal plate. The coefficient of linear expansion of the metal plate is less than or equal to 8×10−6/degrees Celsius. The first m...	08/29/2006
7096703	Method for making a three-dimensional metal structure The invention provides a method of making a three-dimensional metal structure, the method being characterized by the following steps: making longitudinal cuts in a sheet metal strip by causing the strip to pass between two rollers ...	08/29/2006
6994917	Composite material and method for manufacturing the same A plate of an expanded metal and two metal plates are overlaid on one another. The expanded metal plate has a plurality of meshes. The linear expansion coefficient of the expanded metal is equal to or less than 8×10−6/° C., and the thermal conductivit...	02/07/2006
6691386	One-step rotary forming of uniform expanded mesh A single step method and apparatus for the production of expanded metal mesh from deformable metal strip such as lead or lead-alloy strip for use in lead-acid battery manufacture. The apparatus comprises a pair of opposed rolls each having a plurality of ...	02/17/2004
6609279	Filling material, and method of and arrangement for making such a filling material A filling material includes a web of sheet made of metal, in particular aluminum, or of dimensionally stable flexible material, especially plastic, with the sheet being perforated with evenly spaced slits extending parallel in longitudinal direction of th...	08/26/2003
6425181	Method and a machine for the production of accumulator plates The method comprises the steps of: moving a strip through an expansion machine having at least one expansion punching tool and an associated complementary tool or matrix, causing the expansion machine to operate in synchronism with the movement of the str...	07/30/2002
6243932	Manufacturing method of expanded grid and its manufacturing apparatus A manufacturing method for an expanded grid includes the steps of: (a) supplying a thin plate of band form from the longitudinal direction, (b) forming a plurality of intermittent cuts parallel to the edge in a first region, excluding the central portion,...	06/12/2001
6202271	Method and apparatus for manufacturing expanded mesh sheet and battery using this expanded mesh sheet An apparatus and method for producing expanded mesh sheets provides for forming fine slits in a metal sheet at a slit section by plate cutters, but excluding portions in a center and both sides in a widthwise direction of the metal sheet. The areas where ...	03/20/2001
5688578	Composite packaging material having an expanded sheet with a separator sheet The invention relates to a composite cushioning system for protecting articles, packaged within a box, from damage while being transported in the box. The composite structure includes an expansion sheet of expanded slit sheet, in combination with a separa...	11/18/1997
5667871	Slit sheet packing material A filling material for use in filling hollow spaces in packaging or the like comprising one or more pieces of flexible paper material. The paper material has a plurality of individual slits formed in parallel spaced rows extending transversely from one en...	09/16/1997
5647257	Method and process for manufacturing expandable packing material A machine for forming a packing material by positioning a paper material on or adjacent to a die member and forcing a multitude of cutting blades completely through the paper material and into the die member at a multitude of spaced apart locations to for...	07/15/1997
5630263	Manufacturing method of expanded mesh In an expanded mesh of this invention, a latitude skeletal element composing a mesh has a length which is substantially not elongated from a state of a sheet-shaped material. For this reason, the expanded mesh is not bulged like a barrel. Namely, it is fl...	05/20/1997
5538778	Method and apparatus for producing individual rolls of packing material An expanded cushioning material for packing or packaging is in the form of a filled cylinder. The cylinder is formed from a spiral of an essentially flexible, extended sheet material. The flexible material, in its unexpanded form, has a plurality of space...	07/23/1996
5142755	Compositions of matter for stopping fires, explosions and oxidations of materials and build up of electrostatic charges and method and apparatus for making same This invention is directed to an apparatus for making an expandable metal product for use in extinguishing fires and controlling explosions by means of revolving cylinders equipped with slitting knives. The apparatus has opposing cylinders with spaced, di...	09/01/1992
4881307	Expansion of sheet materials A process and machine are provided for the formation of expanded mesh materials in which a slotted starting sheet is bent along at least one succession of alternate strand diagonals (1,2, 3, 4, 5; A, B, C, D), each strand (20) in any one diagonal being be...	11/21/1989
4736610	Method and apparatus for making grain bin flooring Corrugated grain bin floor plates are manufactured from flat metal sheets by a progressive die set in a punch press. A metal sheet is fed into a slitting section of the die set to form slits in the sheet extending in the longitudinal direction of the shee...	04/12/1988
4615671	Die to produce mesh in non-metallic materials The present invention is related to a new process and equipment to produce mesh in non-metallic materials such as leather having a wide application in industrial and commercial fields. The process produces a variety of cuts or incisions in a relatively fl...	10/07/1986
4598569	Method and apparatus for making grain bin flooring Corrugated grain bin floor plates are manufactured from a continuous flat metal strip by a progressive die set in a punch press. The metal strip is fed into a slitting section of the die set to form slits in the sheet extending in the longitudinal directi...	07/08/1986
4567630	Process of continuously producing plate-shaped catalyst and system therefor There is proposed a process of continuously producing a catalyst plate, wherein a thin metal plate is formed by use of a blade with slits in the widthwise directions thereof, expanded in the longitudinal direction thereof into an expanded metal plate havi...	02/04/1986
4510786	Method and apparatus of making double reverse corrugated material A method of making double reverse corrugated material includes feeding the material between an upper die and a lower die. Each of the dies have laterally spaced projections and a stripper positioned in the spaces between the projections of the die. One di...	04/16/1985
4305187	Method and apparatus for making continuous grids for lead acid batteries In method and apparatus for making continuous strips for lead acid batteries, a strip of lead is advanced through a plurality of successive stations such that zigzag slits are formed on the strip, either in a direction parallel to the longitudinal axis or...	12/15/1981
4124925	Expanded metal A reciprocating knife expanded metal machine has a knife for producing parallel strand expanded metal mesh. The knife has cutting teeth with the effective cutting edges of adjacent teeth spaced by a distance almost as great as the length of an effective c...	11/14/1978
4102024	Method and apparatus for making flattened expanded lead strip for battery plates Apparatus for and a method of making expanded lead strip for use in fabricating plates for lead-acid secondary batteries. Lead strip is expanded into a non-planar shape with two mesh portions divided by a longitudinally extending unexpanded portion. The e...	07/25/1978
3987520	Machine for making expanded metal Apparatus for manufacturing expanded sheet stock is disclosed. The apparatus includes a stationary knife having a cutting edge defining one edge of a strip feed slot. While the strip is fed through the slot, a movable knife passes across the slot to form ...	10/26/1976
3987521	Machine for making expanded metal Apparatus for manufacturing expanded sheet stock is disclosed. The apparatus includes a stationary knife having a cutting edge defining one edge of a strip feed slot. While the strip is fed through the slot, a movable knife passes across the slot to form ...	10/26/1976
3965550	Machine for making expanded metal Apparatus for manufacturing expanded sheet stock is disclosed. The apparatus includes a stationary knife having a cutting edge defining one edge of a strip feed slot. While the strip is fed through the slot, a movable knife passes across the slot to form ...	06/29/1976

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Class 29/6.2 - By use of reciprocating perforator