公开(公告)号：US3747764A

公开(公告)日：1973-07-24

申请号：US3747764D

申请日：1971-04-05

Applicant: BETHLEHEM STEEL CORP

Inventor： GRAHAM H ,  HUGHES C

IPC: C02F1/52 ,  C22B3/02 ,  B01D23/10

CPC classification number: C02F1/5281 ,  C22B3/02 ,  Y02P10/234

Abstract: An apparatus for the precipitation of metal compounds from acid waste solution comprises a vertical reaction vessel having a reaction chamber for the upward passage of a liquid suspension of solid particles and means for forcing the particles upward. The apparatus is also provided with overflow means for flowing particles to a recycling chamber, separate ports of entry for a precipitant and for liquid feed, a reservoir above the reaction zone for containment of treated waste liquor, and an exit port for removal of the treated liquid from the apparatus.

公开(公告)号：US3800522A

公开(公告)日：1974-04-02

申请号：US3800522D

申请日：1972-08-09

Applicant: BETHLEHEM STEEL CORP

Inventor： HUGHES C ,  GRAHAM H

IPC: D07B1/16 ,  D07B7/14 ,  D02G3/36

CPC classification number: D07B1/162 ,  D07B1/165 ,  D07B5/002 ,  D07B7/145 ,  D07B2201/2044 ,  D07B2201/2046 ,  D07B2201/2054 ,  D07B2201/2077 ,  D07B2201/2081 ,  D07B2201/2082 ,  D07B2207/404 ,  D07B2801/12 ,  D07B2801/24

Abstract: A wire rope or strand is impregnated with a plastic foam type internal sealant to cushion the wires and strands and provide corrosion protection by (a) initially impregnating the strand with a foamable plastic composition, (b) heating the strand under ''''free-blowing'''' conditions to foam the plastic composition uniformly about the wires or strands, and (c) preferably finally collapsing the foam material upon the surface of the strand by means of a cold die to form a dense outer plastic jacket. The foamable plastic composition before foaming serves as a lubricant within the stranding die so that no additional stranding lubricant is required. The resulting plastic impregnated wire rope or strand has uniform low interwire foam filler densities. Alternative constructions of impregnated rope or strand can be made.

Abstract translation: 钢丝绳或股线用塑料泡沫型内部密封剂浸渍以缓冲电线和股线，并通过（a）最初用可发泡塑料组合物浸渍线材提供防腐蚀保护，（b）在“自由吹制” 使塑料组合物均匀地围绕电线或股线发泡的条件，以及（c）最好通过冷模将泡沫材料最终塌陷在股线的表面上，以形成致密的外部塑料外壳。 发泡前的可发泡塑料组合物在绞合模具内用作润滑剂，因此不需要额外的绞合润滑剂。 所得到的塑料浸渍钢丝绳或股线具有均匀的低的线间泡沫填料密度。 可以制成浸渍绳索或绞线的替代结构。

公开(公告)号：US3833694A

公开(公告)日：1974-09-03

申请号：US26894272

申请日：1972-07-05

Applicant: BETHLEHEM STEEL CORP

Inventor： HUGHES C

IPC: B29C33/00 ,  B29C33/10 ,  B29C44/42 ,  B29D27/00

CPC classification number: B29C44/428 ,  B29C33/0038 ,  B29C33/10 ,  B29K2075/00

Abstract: A POLYURETHANE FOAM CORE WALL PANEL IS PRODUCED BY PLACING A QUANTITY OF FOAM IN A MOLD COMPRISING A BOTTOM PANEL, A BORDER AND A TOP PANEL, AND, WHILE THE EXPANDING FOAM IS IN CONTACT WITH THE TOP PANEL CYCLICALLY FLEXING THE TOP PANEL UNTIL THE FOAM HAS COMPLETELY FILLED THE MOLD.