公开(公告)号：US4136428A

公开(公告)日：1979-01-30

申请号：US867858

申请日：1978-01-09

申请人： Randall D. Godsey ,  Roy E. Svacha ,  James V. Crawford ,  Kenneth R. Janowski

发明人： Randall D. Godsey ,  Roy E. Svacha ,  James V. Crawford ,  Kenneth R. Janowski

IPC分类号： B21C37/15 ,  B22F3/11 ,  B23P15/26 ,  F28F13/18

CPC分类号： F28F13/187 ,  B21C37/154 ,  B22F3/1137 ,  B23P15/26 ,  B22F2998/00 ,  B22F2998/10 ,  B29K2105/04 ,  B29K2705/10 ,  B29L2009/003 ,  Y10S138/09 ,  Y10T29/49377 ,  Y10T29/49886 ,  Y10T428/2936 ,  Y10T428/30

摘要： The invention relates to a method of improving the heat transfer properties in boiling liquids of tubes and other surfaces by applying a very porous reticulated organic foam layer which has been precoated with graphite in contact with the tube surface, and then plating a thin metal coating on the foam substrate. Preferably, the tube is copper and the plating consists of an electroplated layer of copper which is applied over the conductive graphite coated foam. the foam is preferably in the form of a thin tape which is spirally wound about the tube. Pyrolyzation of the foam after plating improves the heat transfer performance of the tube. A method for applying the graphite to the foam is also disclosed.

摘要翻译： 本发明涉及一种通过施加非常多孔的网状有机泡沫层来提高管和其它表面的沸腾液体的传热性能的方法，该有机泡沫层已经用石墨预涂以管表面，然后将薄金属涂层 泡沫基材。 优选地，管是铜，并且电镀由施加在导电石墨涂覆的泡沫上的电镀铜层组成。 泡沫体优选为以管的螺旋形缠绕的薄带的形式。 电镀后泡沫的热解改善了管的传热性能。 还公开了将石墨施加到泡沫体上的方法。

公开(公告)号：US5046085A

公开(公告)日：1991-09-03

申请号：US524192

申请日：1990-05-15

申请人： Randall D. Godsey ,  Charles T. Walneck ,  James Santee ,  Ronald J. Gaulke ,  Luis R. Ortez Perez ,  Alexis T. Ramos

发明人： Randall D. Godsey ,  Charles T. Walneck ,  James Santee ,  Ronald J. Gaulke ,  Luis R. Ortez Perez ,  Alexis T. Ramos

IPC分类号： H04M15/28 ,  H04M17/02 ,  H04W4/24

CPC分类号： H04W4/24 ,  H04M15/28 ,  H04M15/30 ,  H04M15/83 ,  H04M17/023 ,  H04M2215/2026 ,  H04M2215/32 ,  H04M2215/82 ,  H04M2215/92

摘要： An interface unit for coupling an international-type pay-telephone to a land-based or cellular telephone system. The interfacing unit of the invention has a microcomputer, and an associated EPROM in which is stored the exchanges of the telephone numbers that are accessible by that local payphone-terminal, which EPROM also stores a table indicative of the tariffing rates associated with the respective exchanges called. The invention also includes the tone-detectors for detecting the dialed DTMF digits of the pay-telephone, for the conversion thereof for storage in the microcomputer for the determination of a valid telephone number dialed in order to determine the associated tariffing rates. The tone detectors also detect the tone-signals received from the telephone system. The invention also includes "isolating" switching circuitry for isolating the coin-operated pay terminal from its couplement to the telephone system until the telephone call has been connected. After a call has been made according to the invention, the microcomputer, after having determined the tariffing schedule for that particular call made, will generate 12K to 16K tone-bursts to the international-type payphone terminal required for debiting the required amount from the coins or credit initially inserted into the payphone.

摘要翻译： 用于将国际型付费电话连接到陆基或蜂窝电话系统的接口单元。 本发明的接口单元具有微型计算机和相关联的EPROM，其中存储可由该本地付费电话终端访问的电话号码的交换机，该EPROM还存储表示与各交换机相关联的收费率的表 叫。 本发明还包括用于检测付费电话的拨号DTMF数字的音调检测器，用于其转换以存储在微型计算机中，以便确定拨打的有效电话号码以便确定相关联的费率。 音调检测器还检测从电话系统接收的音调信号。 本发明还包括“隔离”切换电路，用于将投币式付费终端与其耦合隔离到电话系统，直到电话呼叫已被连接。 在根据本发明进行呼叫之后，微型计算机在确定了该特定呼叫的收费时间表之后，将向国际型付费电话终端产生12K至16K的音调脉冲串，以从硬币中扣除所需的金额 或最初插入到付费电话中的信用。