Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21K - Making forged or pressed products, e.g. horse-shoes, rivets, bolts, wheels › B21K 21 - Making hollow articles not covered by any single one of groups
Patents for B21K 21 - Making hollow articles not covered by any single one of groups (1,317)
03/1987
03/24/1987US4651548 Wobble-die forging machine
03/17/1987US4649728 Integral joint forming of work-hardenable high alloy tubing
02/1987
02/26/1987WO1987001061A1 Tool for and method of making hollow articles
02/24/1987US4644775 Shell forming apparatus and process
02/10/1987CA1217732A No-hole insertion joint and method
02/03/1987US4640814 Filling cavity with metal particles, then concureent heating and forging
01/1987
01/27/1987US4639568 Apparatus and method for finishing fuel injector spray tips using EDM
12/1986
12/02/1986US4625537 Localized boss thickening by cold swaging
11/1986
11/11/1986US4621514 Method of making an intermediate stage, intermediate blank for a dynamo electric machine commutator ring, and apparatus to carry out the method
10/1986
10/29/1986EP0199428A2 Manufacture of tubular members with at least one enlarged end
09/1986
09/02/1986US4609118 Convex type bottom with a bearing rim for bottles for industrial gases obtained by means of hot forging from a steel billet
07/1986
07/23/1986EP0188086A2 Manufacture of tubular components
07/08/1986US4598856 Process for making bimetallic seamless tubing of steel or special alloys for extrusion
05/1986
05/27/1986CA1204924A1 Method for manufacturing welded pipes
04/1986
04/08/1986US4580431 Method and apparatus for producing a stepped hollow article
02/1986
02/05/1986EP0170388A1 Apparatus and method for finishing fuel injector spray tips
12/1985
12/31/1985US4561274 Method of and apparatus for forging hollow blank member
12/24/1985US4559803 Tool for making hollow articles
12/10/1985US4557100 Unitary fastener insert for structural sandwich panels
10/1985
10/01/1985CA1194348A1 Bimetallic pipe for corrosive fluids
08/1985
08/20/1985US4535519 Method of manufacturing a valve sleeve
05/1985
05/28/1985CA1187681A2 Method and apparatus for making pneumatic counterbalances
05/21/1985US4517897 Small arms projectile
05/21/1985US4517716 Primer pocketing method for brass cartridge cases
05/14/1985CA1186874A1 Method of making a male resistance welding electrode
05/02/1985EP0138805A1 Unitary fastener insert for structural sandwich panels.
04/1985
04/24/1985EP0137957A1 Method of manufacturing an intermediate stage for a commutator-segment collar
04/16/1985US4510788 Method of forging a workpiece
03/1985
03/19/1985US4505144 Apparatus for simultaneous both-end shaping of workpiece
01/1985
01/22/1985CA1181270A1 Method and apparatus for making tubular containers
12/1984
12/25/1984US4489588 Apparatus for manufacturing screw workpieces of a tube semi-product
10/1984
10/17/1984EP0121531A1 Tool for and method of making hollow articles.
10/03/1984EP0120735A1 Method for the production of tubular rods with necked ends, and tubular rods made by this method
09/1984
09/11/1984US4470281 Method of forming end face wall having concentric recess in tubular workpiece
09/05/1984EP0117849A2 Convex type bottom with a bearing rim for bottles for industrial gases obtained by means of hot forging from a steel billet and fixture for forming said bottom
08/1984
08/29/1984EP0116877A2 Method and apparatus of producing a stepped hollow article
08/16/1984WO1984003130A1 Unitary fastener insert for structural sandwich panels
07/1984
07/24/1984US4461162 Forging of conical liners
07/03/1984US4457156 Horizontal tube upsetter
06/1984
06/27/1984EP0111624A1 Improvements in and to aluminium discs for the manufacture of metal containers by impact extrusion
06/26/1984US4455725 Method and apparatus for making tubular containers, at least substantially closed at one end, from pipe material by cold-working
05/1984
05/29/1984US4450704 Metal sleeve production
05/23/1984EP0109048A1 A clutch drum and a method of producing same
04/1984
04/26/1984WO1984001530A1 Tool for and method of making hollow articles
04/25/1984EP0106411A2 Small arms ammunition, and manufacturing process therefor
03/1984
03/06/1984US4434640 Process for the production of a bearing bushing without machining
01/1984
01/17/1984CA1160486A1 Method of manufacturing cartridge cases
01/17/1984CA1160436A1 Method and apparatus for manufacturing spiral pipe
01/03/1984US4423617 Method of making a male resistance welding electrode
12/1983
12/06/1983US4418557 Making a seamless spherical case
10/1983
10/04/1983CA1154617A1 Warm forging method for cup-shaped pieces
09/1983
09/07/1983EP0087911A1 Method of making a male resistance welding electrode
08/1983
08/10/1983EP0085388A1 Method of making a metal socket starting from a cylindrical tubular piece
08/03/1983EP0084817A1 A compound metallic body
06/1983
06/28/1983US4389871 Method of producing yoke of rotary electric machine
06/14/1983CA1147939A1 Hydrostatic pipe splicing method and apparatus
04/1983
04/12/1983US4379397 Apparatus having shaping jaws for manufacturing bodies of spindle-type shapes
02/1983
02/01/1983US4370799 Method for manufacturing unfinished parts for pressed material commutators
11/1982
11/03/1982EP0063995A2 Explosive projectile liberating preformed fragmentary elements, and manufacturing method therefor
10/1982
10/05/1982US4352283 Method of forming spark plug bodies
08/1982
08/31/1982US4346581 Apparatus for manufacturing fittings
06/1982
06/30/1982EP0055006A1 A method and apparatus for making tubular containers, at least substantially closed at one end, from pipe material by cold-working
05/1982
05/19/1982EP0051717A2 Method for self-propelling projectile manufacturing and resulting projectiles thereof
04/1982
04/27/1982CA1122446A1 Upsetting of tube ends
03/1982
03/30/1982US4321816 Metal tube and apparatus and method for manufacturing the same
02/1982
02/18/1982WO1982000424A1 Method of manufacturing cartridge cases
01/1982
01/27/1982EP0044764A1 Method for manufacturing a center electrode for use in a spark plug
01/26/1982US4312210 Warm forging method for cup-shaped pieces
01/26/1982US4312206 Making a seamless, spherical case
01/07/1982WO1982000013A1 Method of obtaining butt-end wall with concentric recess in a tubular workpiece
11/1981
11/10/1981CA1112031A1 Method of making a helically corrugated tube
10/1981
10/27/1981US4296536 Method of manufacturing cartridge cases
10/20/1981US4296180 Process for the production of metallic formed members
09/1981
09/30/1981EP0036444A2 Method of manufacturing commutators by cold-shaping
09/23/1981EP0036050A1 Method of forming spark plug bodies
06/1981
06/23/1981CA1103617A1 Method and apparatus for cold forming a polygonal inner surface
06/02/1981US4271240 Lobed preparatory blank for cold extruding a cup-shaped article with hollow polygonal interior
04/1981
04/21/1981US4262516 Pierced metal tube blanks and methods of making such blanks
03/1981
03/10/1981CA1097041A1 Method of producing a conduit intended for communication with a plurality of working medium sources
02/1981
02/10/1981US4249408 Process for extruding maraging steel
12/1980
12/16/1980CA1091434A1 Apparatus for fabricating tubing
11/1980
11/11/1980CA1089410A1 Internal and external extruded nipples or nozzles in pipe headers or boiler drums
09/1980
09/23/1980CA1086112A1 Process for producing tubular articles
08/1980
08/20/1980EP0014474A1 Method for the production of a tube
08/20/1980EP0014245A1 Apparatus for upsetting tube ends
08/19/1980US4217771 Method of cold forming
07/1980
07/15/1980US4212183 Upsetting of tube ends
07/01/1980US4210013 Press with load transfer mechanism
07/01/1980CA1080520A1 Axle spindle forming apparatus and method
06/1980
06/24/1980US4208900 Axle spindle forming apparatus
04/1980
04/22/1980US4198843 Process for producing tubular articles
03/1980
03/11/1980US4192167 Process and apparatus for upsetting pipe ends
01/1980
01/29/1980US4185749 Can body for an aerosol container
09/1979
09/25/1979US4168619 Process for forging metallic nozzles
09/04/1979US4166373 Method of cold forming
07/1979
07/24/1979US4161873 Internal and external extruded nipples or nozzles in pipe headers or boiler drums
07/10/1979CA1058108A1 Method for forming a track link bushing having a contoured opening
06/1979
06/05/1979US4157026 Swaging machine for swaging large tubes
04/1979
04/03/1979CA1051824A1 Method and apparatus for swaging tubular material
01/1979
01/24/1979EP0000438A1 Process for producing tubular articles
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