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1. 发明授权

US4995194A Power-assist door closer 失效
标题翻译：助力门关闭
公开(公告)号：US4995194A
公开(公告)日：1991-02-26
申请号：US500023
申请日：1990-03-27
申请人： Eckart F. Schultze , Richard Easter , Robert V. Funderburk
发明人： Eckart F. Schultze , Richard Easter , Robert V. Funderburk
IPC分类号： E05F3/10 , E05F3/04 , E05F3/22 , E05F15/02 , E05F15/04
CPC分类号： E05F3/04 , E05F15/53 , E05F3/224 , E05Y2201/21 , E05Y2201/256 , E05Y2201/264 , E05Y2201/41 , E05Y2201/422 , E05Y2201/448 , E05Y2800/113 , E05Y2900/132 , Y10T16/2788
摘要： An hydraulic door closer has a motor/pump component to assist opening the door by supplying oil under pressure to the closer cylinder. The component is activated by a switch sensitive to the turning of the closer pinion shaft as the door is moved out of its frame. Further, the distance which the door must move until the switch activates the motor/pump component is adjustable. The hydraulic circuitry is conveniently embodied in a single manifold block.

2. 发明授权

US4500069A Hydraulic directional control valve 失效
标题翻译：液压方向控制阀
公开(公告)号：US4500069A
公开(公告)日：1985-02-19
申请号：US346175
申请日：1982-02-05
申请人： Ralph R. Barber , Eckart F. Schultze
发明人： Ralph R. Barber , Eckart F. Schultze
IPC分类号： F16K31/10 , F16K39/00
CPC分类号： F16K31/10 , Y10S137/901 , Y10T137/7876 , Y10T137/7928 , Y10T137/87241
摘要： An improvement in ball-type check valve arrangements including a valve body in which is formed a fluid passageway and a valve chamber communicating through a valve seat in the chamber, a ball in the chamber seated in the valve seat, and a reciprocal retaining member having a head engaging the ball in opposition to the valve seat and a stem extending from the head through the chamber wall opposite the valve seat, the ball and retaining member being reciprocably movable toward and away from the seat. The head includes a circular wall annularly engaging the ball, the stem being of a cross-sectional area smaller than both the area defined by the circular wall and the valve seat opening, providing a net surface area of the ball and retaining member equal to the difference of the valve seat opening area and the cross-sectional stem area against which chamber pressure applies valve closing force toward the seat, whereby reduced valve opening force, as compared to conventional ball valves, is required in opposition to the valve closing force and the ball and retaining member are maintained in contact. A longitudinal bore through the valve stem permits relief of pressurized fluid if any separation of the ball and retaining member occurs whereby chamber pressure cannot act in opposition to its valve closing force on the net surface area.
摘要翻译：球型止回阀装置的改进包括阀体，其中形成有流体通道和通过腔室中的阀座连通的阀室，位于阀座中的腔室中的球，以及具有与球座相对的头部接头的头部以及从头部延伸通过与阀座相对的腔室壁的杆，球和保持构件能够朝向和远离座椅往复运动。头包括环形地与球接合的圆形壁，杆的横截面面积小于由圆形壁和阀座开口限定的区域的两个区域，提供球和保持构件的净表面积等于阀座开口面积和腔室压力对阀座施加阀关闭力的横截面阀杆面积的差异，因此与传统的球阀相比，需要与阀门关闭力相反的减小的阀打开力球和保持构件保持接触。通过阀杆的纵向孔可以释放加压流体，如果球和保持构件发生任何分离，则室压力不能与其在净表面积上的阀关闭力相反。

3. 发明授权

US5251400A Control for a door closer having a power-assist opening feature 失效
标题翻译：具有助力开启特征的门闭合器的控制
公开(公告)号：US5251400A
公开(公告)日：1993-10-12
申请号：US905420
申请日：1992-06-29
申请人： Eckart F. Schultze
发明人： Eckart F. Schultze
IPC分类号： E05F3/22 , E05F15/04 , H01H3/44 , E05F15/10
CPC分类号： E05F3/224 , E05F15/53 , E05Y2201/41 , E05Y2201/422 , E05Y2201/448 , E05Y2800/113 , E05Y2900/132 , H01H3/44 , Y10T16/2788
摘要： A control for a power-assist feature for an hydraulic closer is driven by structure mounted on the pinion shaft of the closer. It includes a pump-activating arm slidably mounted on the shaft, the end of the arm adapted to cover a pump-on sensor when the door is `bumped`. It also includes a follower rotatably mounted near the pinion and engageable escapement-fashion by a wheel in friction fit on the pinion shaft, the follower carrying a pump-deactivating arm, the end of the latter arm adapted to move away from a pump-off sensor when the door opens to its preset limit.
摘要翻译：用于液压闭合器的辅助功能的控制由安装在靠近器的小齿轮轴上的结构驱动。它包括可滑动地安装在轴上的泵激活臂，当门被“碰撞”时，臂的端部适于覆盖泵送传感器。它还包括可转动地安装在小齿轮附近的随动件，并且可通过摩擦配合在小齿轮轴上的轮进行可接合的擒纵机构，后者承载泵停用臂，后者臂的端部适于远离泵送传感器当门打开到其预设极限。

4. 外观设计

USD266091S Hydraulic power pump 失效
公开(公告)号：USD266091S
公开(公告)日：1982-09-07
申请号：US111860
申请日：1980-01-14
申请人： Robert E. Richards , Eckart F. Schultze
设计人： Robert E. Richards , Eckart F. Schultze

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