公开(公告)号：US5566964A

公开(公告)日：1996-10-22

申请号：US398219

申请日：1995-03-02

Applicant: Rodney L. Leonard

Inventor： Rodney L. Leonard

IPC: B60D1/07 ,  B60D1/46 ,  B60D1/54 ,  B62D53/06 ,  B62D53/08 ,  B62D63/00

CPC classification number: B60D1/54 ,  B60D1/07 ,  B60D1/46 ,  B62D53/061 ,  B62D53/0828

Abstract: A convertible towing device for use with a towing vehicle equipped with a trailer connector and a trailer having a tongue with a conventional trailer hitch includes a base section connectable to the trailer and a pivot section pivotable on the base section between a rearward position toward the trailer and a forward position toward the towing vehicle and connectable to the towing vehicle in the forward position. The pivot section is adjustably positionable in pre-selected forward positions and is provided with a connector plate having a king pin for connection to a fifth wheel type connector on the towing vehicle.

Abstract translation: 一种用于配备拖车连接器的牵引车辆和具有传统拖车牵引装置的舌头的拖车的可转换拖曳装置，包括可连接到拖车的基座部分和可在靠近拖车的向后位置之间枢转的基座部分上的枢轴部分 并且朝向牵引车辆的向前位置并且能够在向前位置处连接到牵引车辆。 枢转部分可调节地定位在预先选择的前进位置，并且设置有连接板，该连接板具有用于连接到牵引车上的第五轮型连接器的主销。

公开(公告)号：US5372630A

公开(公告)日：1994-12-13

申请号：US50455

申请日：1993-09-20

Applicant: Kevin A. Foo ,  Rodney L. Leonard ,  John G. Whellock ,  Richard S. Celmer

Inventor： Kevin A. Foo ,  Rodney L. Leonard ,  John G. Whellock ,  Richard S. Celmer

IPC: C22B5/16 ,  C22B7/02 ,  C22B7/04 ,  C22B19/04 ,  C22B19/34

CPC classification number: C22B19/34 ,  C22B19/04 ,  C22B7/02 ,  C22B7/04 ,  Y02P10/212

Abstract: A process for treatment of zinc sulfide or other zinc bearing feed materials in conjunction with an iron sulfide containing mineral or compound to effect a separation of zinc from iron by fuming on either zinc and sulphur vapor or zinc sulphide vapor. The vapor is stripped and transported by a carrier gas from the mineral or a molten matte formed from the mineral. The process is operated at a temperature in the region of 1250.degree. to 1400.degree. C. and at a partial pressure of oxygen in the region of 10-.sup.7 to 10-.sup.11 bar. The process is conducted in the presence of a liquid matte phase which contains at least iron sulphide and which is intimately mixed in a bath with a slag phase.

Abstract translation: 一种处理硫化锌或其他含锌原料的方法，与含铁硫化物的矿物或化合物一起处理，以通过在锌和硫蒸气或硫化锌蒸汽上发烟来实现锌从铁分离。 蒸汽被汽提并通过载体从矿物或由矿物形成的熔融锍输送。 该方法在1250℃至1400℃的温度和10-7至10-11巴范围内的氧分压下进行。 该方法在含有至少硫化铁并且在浴中与渣相紧密混合的液态无光泽相存在下进行。

公开(公告)号：US5482534A

公开(公告)日：1996-01-09

申请号：US211916

申请日：1994-04-20

Applicant: Rodney L. Leonard ,  John G. Whellock

Inventor： Rodney L. Leonard ,  John G. Whellock

IPC: C22B11/00 ,  C22B3/06 ,  C22B3/44 ,  C22B15/00 ,  C22B19/00 ,  C22B19/30 ,  C22B23/00 ,  C22B30/04

CPC classification number: C22B15/0073 ,  C22B11/04 ,  C22B19/22 ,  C22B19/30 ,  C22B23/0438 ,  C22B3/065 ,  C22B30/04 ,  Y02P10/234 ,  Y02P10/236

Abstract: A process suitable for the extraction or recovery of metal values from arsenic containing feeds and including the steps of: a) treating the feed with a nitric acid-containing leachant solution in order to dissolve the desired metals; b) adding a source of iron (III) to the leachant solution whereby to oxidise arsenic (III) in solution to arsenic (V); c) adding a neutralising agent to the leachant solution whereby to precipitate arsenic as arsenic (V); d) separating the arsenic (V) precipitate from the leachant solution; and e) recording metal values from the leachant solution.

Abstract translation: 一种适用于从含砷饲料提取或回收金属值的方法，包括以下步骤：a）用含硝酸的浸出剂溶液处理饲料以溶解所需的金属; b）向浸出液中加入铁（III）源，从而将溶液中的砷（III）氧化成砷（V）; c）向浸出液中加入中和剂，由此将砷沉淀为砷（V）; d）从浸出液中分离出砷（V）沉淀物; e）从浸出液中记录金属值。