The present invention provides a method for producing a full engagement Pittsburgh male lock using specific cutting assemblies and protocols that reduce the amount of metal that is removed from the male portion of the corner notches in the duct. Forming of the male portion of the lock is done after the connecting flange forming has been completed as opposed to before the connecting flange forming has been completed.

A swage tool includes a plurality of swage projections that each defines an angular circumferential extent, and the sum of each of these angular circumferential extents is at least 290 degrees.

A swage tool includes a plurality of swage projections that each defines an angular circumferential extent, and the sum of each of these angular circumferential extents is at least 290 degrees.

A method of making a book or booklet cover including placing a first face of a sheet-like information carrier on a first side of a metal sheet that extends beyond one edge of the sheet-like information carrier. The method including bending a portion of the metal sheet along an edge thereof, for the portion to elastically press on the sheet-like information carrier.

A book or booklet cover including a metal sheet supporting a sheet-like information carrier, which sheet-like information carrier has a first face and an opposite second face, with the second face on a first side of the metal sheet, the metal sheet-having a portion extending beyond at least one edge of the sheet-like information carrier, where the portion of the metal sheet has a rounded bend along an edge thereof, the portion elastically pressing against the sheet-like information carrier.

A method of making a book or booklet cover including placing a first face of a sheet-like information carrier on a first side of a metal sheet that extends beyond one edge of the sheet-like information carrier. The method including bending a portion of the metal sheet along an edge thereof, for the portion to elastically press on the sheet-like information carrier.

A book or booklet cover including a metal sheet supporting a sheet-like information carrier, which sheet-like information carrier has a first face and an opposite second face, with the second face on a first side of the metal sheet, the metal sheet-having a portion extending beyond at least one edge of the sheet-like information carrier, where the portion of the metal sheet has a rounded bend along an edge thereof, the portion elastically pressing against the sheet-like information carrier.

Combined sheets and a method of producing combined sheets. A combined sheet includes a main sheet including a first main indentation feature providing a first overhang over a first portion of the main sheet and a second main indentation feature providing a second overhang over a second portion of the main sheet. The combined sheet also includes a foundation sheet abutting the main sheet. The foundation sheet includes a first foundation indentation feature crimped to the first main indentation feature and a second foundation indentation feature crimped to the second main indentation feature. The first overhang and the second overhang provides overhangs in different directions to prohibit separation of the foundation sheet from the main sheet. The method of producing the combined sheet includes co-locating the main sheet to abut the foundation sheet and pressing one or more indentation punches for forming indentation features providing overhangs in different directions.

Combined sheets and a method of producing combined sheets. A combined sheet includes a main sheet including a first main indentation feature providing a first overhang over a first portion of the main sheet and a second main indentation feature providing a second overhang over a second portion of the main sheet. The combined sheet also includes a foundation sheet abutting the main sheet. The foundation sheet includes a first foundation indentation feature crimped to the first main indentation feature and a second foundation indentation feature crimped to the second main indentation feature. The first overhang and the second overhang provides overhangs in different directions to prohibit separation of the foundation sheet from the main sheet. The method of producing the combined sheet includes co-locating the main sheet to abut the foundation sheet and pressing one or more indentation punches for forming indentation features providing overhangs in different directions.

A method of manufacturing a rotating bearing unit includes to cause one end surface in the axial direction of the forming punch (46), formed by combining a plurality of punch elements (46, 46) divided in the circumferential direction, which are displaceable in the axial direction and which are not displaceable in the circumferential direction, and having a processing teeth (44, 44) at one end surface in the axial direction, to face the other end surface of the caulking section (20) in the axial direction. In this state, rolls (30a) are rotated about the central axis (α) of the hub main body (8) while pressing the other end surface of the forming punch (46) in the axial direction with a pressing surface (43) of the roll (30a) having a central axis (β) that is inclined with respect to the central axis (α) of the hub main body (8).

Provided is a roller hemming apparatus capable of preventing positional misalignment of a lower plate workpiece during a bending process. A roller hemming apparatus of the present disclosure includes a die configured to hold a first workpiece which is a plate material, and a roller configured to bend an edge of the first workpiece onto an edge of a second workpiece, which is a plate material placed on the first workpiece held in the die, to overlap each other, the die including a suction mechanism that opens toward a workpiece contact surface against which a hem flange on a peripheral edge of the first workpiece abuts, and that suctions the first workpiece. Thus, positional misalignment of the first workpiece is prevented during a hemming process.

In a method for producing a multilayered heat shield, which has a first metal layer and a second metal layer that has an insulating layer arranged between the metal layers, the metal layers are connected at the edge by a flanging. To produce the heat shield, the first metal layer, the insulating layer and the second metal layer are placed into a first pressing tool. This is effected in such a way that an edge portion of the first metal layer protrudes beyond an edge portion of the second metal layer. The insulating layer is set back from the edge portions of the first metal layer and of the second metal layer.