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1. 发明授权

US4440588A Hot air welder for welding roofing material 失效
标题翻译：用于焊接屋顶材料的热风焊机
公开(公告)号：US4440588A
公开(公告)日：1984-04-03
申请号：US353168
申请日：1982-03-01
申请人： Edward J. Stevenson , Donald E. Dean
发明人： Edward J. Stevenson , Donald E. Dean
IPC分类号： B29C65/00 , B29C65/02 , B29C65/10 , E04D15/04 , B32B31/08
CPC分类号： E04D15/04 , B29C65/103 , B29C66/1122 , B29C66/43 , B29C66/73921 , B29C66/8161 , B29C66/8362 , B29C66/86521 , B29C66/86535 , B29C66/8748 , B29C66/9121 , B29C66/91212 , B29C66/9141 , B29C66/435 , B29C66/81465 , B29C66/91231 , B29C66/9241 , B29C66/93431 , B29L2031/108 , Y10T156/1788 , Y10T156/1798
摘要： An improved hot air welder which includes a blower communicating with a heater assembly mounted on a chassis wherein the chassis has coupled thereto a pressure wheel and tracking wheel, includes means for adjusting the angle of orientation of the pressure wheel and tracking wheel with respect to the chassis in order to obtain a proper pressure bias through the pressure wheel on the seam over which the pressure wheel rides, and for providing a proper orientation of the tracking wheel according to the slope of the roof upon which the welder is driven. The welder can accommodate inside and outside seams with equal facility. The air dam has an improved roller track to more evenly apply pressure against the underlying roofing material. A guide member slidably engages and accommodates roofing material from both the left and right sides to assist in guiding the hot air welder along the seam to be welded. A constant speed blower controlled by a gate valve controls the amount of air to the heater assembly. An alarm is included within the heater assembly for sensing insufficient temperature when the welder is operating and for sounding an audible alarm to indicate to the operator that insufficient heat is being delivered to the seam to manufacture a suitable weld.
摘要翻译：一种改进的热风焊机，其包括与安装在底盘上的加热器组件连通的鼓风机，其中底盘已经连接到其上的压力轮和跟踪轮，包括用于调节压力轮和跟踪轮的取向角度相对于底座，以便通过压力轮骑行的接缝上的压力轮获得适当的压力偏压，并且用于根据在其上驱动焊机的屋顶的斜率提供跟踪轮的适当定向。焊机可以容纳内部和外部接缝，具有相同的设备。空气坝具有改进的辊道，以更均匀地对下面的屋顶材料施加压力。引导构件可滑动地接合和容纳来自左侧和右侧的屋顶材料，以帮助热风焊机沿待焊接的接缝引导。由闸阀控制的恒速鼓风机控制加热器组件的空气量。在加热器组件中包括一个报警器，用于在焊工运行时检测不足的温度，并且发出声音报警器以向操作者指示不足的热量被传送到接缝以制造合适的焊缝。

2. 发明授权

US4039643A Method for forming plastic sheets 失效
标题翻译：塑料片的成型方法
公开(公告)号：US4039643A
公开(公告)日：1977-08-02
申请号：US508706
申请日：1974-09-23
申请人： Donald E. Dean , John Alesi, Jr.
发明人： Donald E. Dean , John Alesi, Jr.
IPC分类号： B29C49/00 , B29C51/14 , B29C51/22 , B29C51/26 , B29C17/04 , B29F5/00
CPC分类号： B29C49/0047 , B29C51/22 , B29C51/262 , B29C51/14 , B29L2009/001
摘要： Improvements in the method for transporting and positioning thermoplastic sheets in a vacuum-forming machine are disclosed. The vacuum-forming machine has a stationary, lower platen which supports the lower mold half and an upper reciprocating platen which carries the upper mold half. This construction provides for minimal overall height of the press used in the vacuum forming and also achieves a high precision of mating of the lands of the opposed die faces so that a minimal land area is provided, permitting the formation of molded hollow enclosures from the thermoplastic sheets which have tear trims about their outer periphery to facilitate the removal of excess sheet material therefrom. The method of transferring the thermoplastic sheets between the opposed die faces of the vacuum molding apparatus includes the steps of supporting the thermoplastic sheets in upper and lower vertically spaced apart, open frameworks which are moved between heating stations and the molding station. At the molding station, the lowermost open frameworks is lowered to place the lower thermoplastic sheet in contact with the die face of the lower mold half and vacuum is applied thereto to draw the thermoplastic sheet into conforming contour with the die face. The upper platen of the press is lowered into proximity with the uppermost of the open frameworks, vacuum is applied to the upper mold half to draw the uppermost thermoplastic sheet into contour-conforming contact with the die face of the upper mold half and the upper mold half is then lowered into land contact with the lower mold half. Pressure is applied to extrude sheet material from between the opposed lands of the die faces, thereby providing a weakened tear line about the peripheral edges of the formed product.The apparatus used in the invention includes thermoplastic sheet transfer means that comprises the open frameworks which support the thermoplastic sheets at their peripheral edges and that are mounted on transport means for moving the open frameworks and their supported thermoplastic sheets between heating and molding stations. The open frameworks are carried by carriages that are mounted on vertical track means of the transport means whereby the vertical position of the thermoplastic sheets can be readily controlled with actuator means therefor which are linked to the open frameworks and the transport means to effect vertical movement of the open frameworks. The actuator means include reciprocal piston and cylinder assemblies with ports at opposite ends of each of the cylinders and conduit means connected between the ports and selector valve means which are effective to connect the conduits between a source of pressured fluid or a fluid exhaust line. The selector valve means in the invention have null positions and are biased into the null positions to supply the source of pressured fluid to the cylinders on both sides of their pistons when the open frameworks are to be held stationary. This constructional feature eliminates creeping of the open frameworks that could be caused by leaks in the actuator assemblies.
摘要翻译：公开了在真空成型机中输送和定位热塑性片材的方法的改进。真空成型机具有支撑下半模的固定的下压板和承载上半模的上往复压板。这种结构提供了在真空成型中使用的压力机的最小总高度，并且还实现了相对的模具表面的焊盘的匹配的高精度，使得提供了最小的焊盘区域，允许从热塑性塑料形成模制的中空封壳具有围绕其外周的撕裂修剪的片材，以便于从其中除去多余的片材。在真空成型设备的相对的模具面之间转移热塑性片材的方法包括以下步骤：将热塑性片材支撑在加热站和成型台之间移动的上部和下部垂直间隔的开放框架中。在模制站处，最下面的开放框架被降低以放置下部热塑性片材

3. 发明授权

US4575879A Safety seat closure 失效
标题翻译：安全座椅关闭
公开(公告)号：US4575879A
公开(公告)日：1986-03-18
申请号：US539150
申请日：1983-10-05
申请人： Chavelo Cabral , Donald E. Dean , Armando M. Lopez
发明人： Chavelo Cabral , Donald E. Dean , Armando M. Lopez
IPC分类号： A47K13/10 , E05D11/10 , E05F3/20
CPC分类号： A47K13/10 , A47K13/242 , E05D11/1014 , E05F3/20 , E05D11/1064 , E05Y2900/614
摘要： This safety seat closure is designed to prevent small children from being injured or killed, when using toilet commodes. Primarily, the closure consists of a base member with a cover, and a pair of shafts in the structure are secured to two pair of lever arms, which are secured to the seat and lid of the commode. The structure further includes interior mechanisms for locking the lid and seat closed, and also unlocking the seat and lid from their closed positions.
摘要翻译：这个安全座椅关闭是为了防止小孩在使用厕所时受伤或死亡。主要地，封闭件由具有盖的基部构件组成，并且结构中的一对轴被固定到两对杠杆臂，固定到该槽的座和盖上。该结构还包括用于锁定盖子和座椅关闭的内部机构，并且还将座椅和盖子从其关闭位置解锁。

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