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公开(公告)号：US06254788B1
公开(公告)日：2001-07-03
申请号：US09428418
申请日：1999-10-28
Applicant: Donald R. Davidson
Inventor： Donald R. Davidson
IPC: B01D3700
CPC classification number: C02F1/003 , C02F2201/006
Abstract: A filter/sanitizer has a filter housing, provided with a fluid inlet and a fluid outlet, a filter cartridge with a hollow interior, located within the filter housing, and a sanitizer cartridge, with a hollow core, positioned within the hollow interior of the filter cartridge. In a preferred embodiment, the sanitizer cartridge is constructed with an outer fluid-permeable member and an inner fluid-permeable member, the outer and inner members substantially enveloping a space therebetween, with the space containing a sanitizing media bed. In operation, as fluid enters the filter housing through the fluid inlet, substantially the full flow of fluid passes through the filter cartridge, through the sanitizer cartridge and around the sanitizing media contained within the bed, into the hollow core of the sanitizer cartridge, and out of the filter housing through the fluid outlet.
Abstract translation: 过滤器/消毒器具有设置有流体入口和流体出口的过滤器壳体，位于过滤器壳体内的具有中空内部的过滤器滤芯，以及具有中空芯的消毒器筒，定位在中空内部 滤芯。 在优选的实施方案中，消毒剂滤筒由外部的可透过流体的构件和内部可透过流体的构件构成，外部和内部构件基本上包围其间的空间，其中空间包含消毒介质床。 在操作中，当流体通过流体入口进入过滤器壳体时，基本上全部流体流通过过滤器滤芯，通过消毒剂滤芯和包围在床内的消毒介质周围，进入消毒剂滤筒的空心芯，以及 通过流体出口从过滤器壳体出来。
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公开(公告)号：US5788258A
公开(公告)日：1998-08-04
申请号：US752528
申请日：1996-11-20
Applicant: George P. Gill , David L. Swanson , Donald R. Davidson
Inventor： George P. Gill , David L. Swanson , Donald R. Davidson
CPC classification number: B60D1/06 , B60D1/54 , Y10S280/901
Abstract: A folding ball hitch having a recessed safety chain latching mechanism is of the type normally mounted in the bed of a pickup truck. The ball is foldable from an upright or active position to a down or stowed position in which the ball does not interfere with the usage of the bed when the truck is not towing a trailer. To accommodate the safety chains of a trailer, the present invention provides a sliding rod mounted below the mounting plate of the hitch. Chain link sized slots are formed in the mounting plate. The end links of the safety chains can be inserted into the slots and the rod can be slid from one side to the other to securely lock the chains in respective slots. The rod is biased toward a latching position wherein the rod can be manually translated to open the slot for allowing insertion of a link of the safety chain, following which the rod can be returned to its center position in which the link is secured and any chain forces are transferred by the rod directly to the mounting structure. The safety chain mechanism is completely recessed (except when the bar operator is in the active position) to avoid obstruction of the truck bed.
Abstract translation: 具有嵌入式安全链锁定机构的折叠式搭扣通常安装在皮卡车的床中。 球可以从直立或主动位置折叠到向下或收起的位置，在该位置中，当卡车不牵引拖车时，球不妨碍床的使用。 为了适应拖车的安全链，本发明提供一种安装在搭接装置的下方的滑动杆。 在安装板上形成链节尺寸的槽。 安全链的端部连杆可以插入槽中，并且杆可以从一侧滑动到另一侧，以将链条牢固地锁定在相应的槽中。 杆被朝向闭锁位置偏置，其中杆可以被手动地平移以打开狭槽以允许插入安全链的连杆，随后杆可以返回到其中链节被固定的中心位置，并且任何链条 力通过杆直接传递到安装结构。 安全链机构完全凹陷（除了当操作员处于主动位置时），以避免卡车车厢的阻塞。
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公开(公告)号：US5607224A
公开(公告)日：1997-03-04
申请号：US414521
申请日：1995-03-31
Applicant: Samuel Tobias , Donald R. Davidson , Robert H. Hanes
Inventor： Samuel Tobias , Donald R. Davidson , Robert H. Hanes
CPC classification number: F21S8/00 , F21V25/00 , F21W2131/401
Abstract: A housing for an underwater lighting fixture includes a wet niche formed from plastic and provided with three alternative grounding pathways. A conductor strap is attached to the niche by a threaded lug which extends through the strap and an adjacent wall of the niche to permit an internal ground wire and an external ground wire to be connected to the strap. As a further grounding assurance, the lighting fixture is grounded through a bracket which attaches to the conductor strap. The bracket also serves as a current collector to receive electrical charge from the surrounding water.
Abstract translation: 用于水下照明器具的壳体包括由塑料形成并具有三个备选接地路径的湿龛。 导体带通过螺纹凸耳连接到小孔，该螺纹凸耳延伸通过带子和相邻的小孔壁，以允许内部接地线和外部接地线连接到带子上。 作为进一步的接地保证，照明器具通过附接到导体带的支架接地。 支架还用作集电器以从周围的水接收电荷。
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公开(公告)号：USD312906S
公开(公告)日：1990-12-11
申请号：US249467
申请日：1988-09-26
Applicant: Donald R. Davidson , Gerald J. Creed , Howard D. Rogers
Designer： Donald R. Davidson , Gerald J. Creed , Howard D. Rogers
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公开(公告)号：US4953300A
公开(公告)日：1990-09-04
申请号：US388124
申请日：1989-07-31
Applicant: Donald R. Davidson , Pao-Ter Huang , H. David Rogers
Inventor： Donald R. Davidson , Pao-Ter Huang , H. David Rogers
CPC classification number: D06F71/34 , D06F71/026
Abstract: A steam iron press employs first and second members and a lever mechanism connected to the second member and when manually actuated by an operator causing the second member to be moved to any position between a position of maximum separation and a position of engagement with respect to the first member. The second member receives water and converts the water into steam which is expelled through openings therein. A pump connected between the second member and a water reservoir feeds water to the second member. A cam mechanism is connected between the lever mechanism and the pump to only actuate the pump during a predetermined interval t between the instant of time T1 at which the lever mechanism has initiated movement of the second member toward the first member and the instant of time T2 at which an article to be pressed is squeezed between the two surfaces.
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Patent Agency Ranking
公开(公告)号：US4380961A
公开(公告)日：1983-04-26
申请号：US246564
申请日：1981-03-23
Applicant: Gerhard Reinert , Donald R. Davidson
Inventor： Gerhard Reinert , Donald R. Davidson
CPC classification number: D05B63/00
Abstract: A variable pull-off mechanism for a sewing machine is provided with a thread pull-off disc on a rotatably mounted shaft which is concentric with the drive shaft of a vertical axis looptaker. The disc is formed with thread catching edges which engage and pull-off thread from a bobbin as the disc is oscillated between a fixed and a controllable position in accordance with the operation of a servomotor responsive to various control signals.
Abstract translation: 一种用于缝纫机的可变牵引机构在可旋转地安装的轴上设置有螺纹拉出盘，其与垂直轴线取样器的驱动轴同心。 盘根据各种控制信号的伺服电动机的操作，在盘在固定位置和可控位置之间摆动时，将线圈形成有螺纹啮合边缘，从而从线轴上接合和脱开螺纹。
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公开(公告)号：US4316562A
公开(公告)日：1982-02-23
申请号：US145939
申请日：1980-05-02
Applicant: Donald R. Davidson , Wesley R. Peterson
Inventor： Donald R. Davidson , Wesley R. Peterson
CPC classification number: A41H37/005
Abstract: A button attaching tool is provided with a base, a pair of needles which have collapsible and expandable thread receiving eyes and which project from the base for use in penetrating a layer of material and the holes of a button to be attached to the material, and a member for stripping the material and button from the needles.
Abstract translation: 按扣安装工具设置有基部，一对针，其具有可折叠和可扩展的线接收眼睛，并且从基座突出以用于穿透材料层和要附接到材料的按钮的孔，以及 用于从针上剥离材料和按钮的构件。
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公开(公告)号：US07318448B2
公开(公告)日：2008-01-15
申请号：US10282223
申请日：2002-10-25
Applicant: Eric C. Fleischer , Donald R. Davidson , Bernhard Schaub , Melvyn L. Henkin , Jordan M. Laby
Inventor： Eric C. Fleischer , Donald R. Davidson , Bernhard Schaub , Melvyn L. Henkin , Jordan M. Laby
IPC: F16K11/10
CPC classification number: E04H4/1654 , F16K11/20 , Y10T137/794 , Y10T137/86413 , Y10T137/87877 , Y10T137/87893
Abstract: A swimming pool cleaning device includes a fluid distribution system for controlling its operation. More particularly, the distribution system includes a housing having an inlet for receiving a supply of pressurized fluid, a pair of outlet openings and a valve chamber positioned between the inlet and the outlet openings. A piston, including a valve member, is movably mounted in the housing so as to be movable between a first position, in which the valve member closes one of the outlet openings so as to divert pressurized fluid to the other one of the outlet openings, and a second position, in which the valve member closes the other one of the outlet openings so as to divert pressurized fluid to the one of the outlet openings. A valve is provided for controlling the movement of the piston between the first and second positions. The piston has a passage extending therethrough so as to permit flow of pressurized fluid from the valve chamber to the valve.
Abstract translation: 游泳池清洁装置包括用于控制其操作的流体分配系统。 更特别地，分配系统包括具有用于接收加压流体供应的入口的壳体，一对出口开口和位于入口和出口之间的阀室。 包括阀构件的活塞可移动地安装在壳体中，以便能够在第一位置和第二位置之间移动，在第一位置，阀构件关闭其中一个出口，从而将加压流体转移到另一个出口， 以及第二位置，其中阀构件封闭另一个出口开口，以将加压流体转移到出口开口之一。 提供阀，用于控制活塞在第一和第二位置之间的运动。 活塞具有通过其延伸的通道，以允许加压流体从阀室流到阀。
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公开(公告)号：US6004458A
公开(公告)日：1999-12-21
申请号：US14448
申请日：1998-01-28
Applicant: Donald R. Davidson
Inventor： Donald R. Davidson
CPC classification number: C02F1/003 , C02F2201/006
Abstract: A filter/sanitizer has a filter housing, provided with a fluid inlet and a fluid outlet, a filter cartridge with a hollow interior, located within the filter housing, and a sanitizer cartridge, with a hollow core, positioned within the hollow interior of the filter cartridge. In a preferred embodiment, the sanitizer cartridge is constructed with an outer fluid-permeable member and an inner fluid-permeable member, the outer and inner members substantially enveloping a space therebetween, with the space containing a sanitizing media bed. In operation, as fluid enters the filter housing through the fluid inlet, substantially the full flow of fluid passes through the filter cartridge, through the sanitizer cartridge and around the sanitizing media contained within the bed, into the hollow core of the sanitizer cartridge, and out of the filter housing through the fluid outlet.
Abstract translation: 过滤器/消毒器具有设置有流体入口和流体出口的过滤器壳体，位于过滤器壳体内的具有中空内部的过滤器滤芯，以及具有中空芯的消毒器筒，定位在中空内部 滤芯。 在优选的实施方案中，消毒剂滤筒由外部的可透过流体的构件和内部可透过流体的构件构成，外部和内部构件基本上包围其间的空间，其中空间包含消毒介质床。 在操作中，当流体通过流体入口进入过滤器壳体时，基本上全部流体流通过过滤器滤芯，通过消毒剂滤芯和包围在床内的消毒介质周围，进入消毒剂滤筒的中空芯部，以及 通过流体出口从过滤器壳体出来。
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公开(公告)号：US5432688A
公开(公告)日：1995-07-11
申请号：US30661
申请日：1993-03-12
Applicant: Samuel Tobias , Donald R. Davidson , Robert H. Hanes
Inventor： Samuel Tobias , Donald R. Davidson , Robert H. Hanes
CPC classification number: F21V17/168 , F21V23/001 , F21V25/00 , F21V27/02 , F21V31/005 , F21V31/04 , F21W2131/401
Abstract: A housing for an underwater lighting fixture includes a wet niche formed from plastic and provided with a grounding strap. The grounding strap is attached to the niche by a threaded lug which extends through the strap and an adjacent wall of the niche to permit an internal ground wire and an external ground wire to be connected to the strap. As a further grounding assurance, the lighting fixture may be grounded through the grounding strap, which mechanically and electrically attaches the lighting fixture to the niche.
Abstract translation: 用于水下照明器具的壳体包括由塑料形成并具有接地带的湿龛。 接地带通过螺纹凸耳连接到小孔，该螺纹延伸穿过带子和相邻的小孔壁，以允许内部接地线和外部接地线连接到带子上。 作为进一步的接地保证，照明器具可以通过接地带接地，接地线将照明器具机械地和电气地附接到利基。
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