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1. 发明授权

US5636706A Ladder, member for connecting a rail to a horizontal element of a ladder, and method 失效
标题翻译：梯子，用于将轨道连接到梯子的水平元件的构件以及方法
公开(公告)号：US5636706A
公开(公告)日：1997-06-10
申请号：US272154
申请日：1994-07-08
申请人： David E. Plotner , Edward E. Heald , Richard P. Sulecki , Frederick J. Bartnicki , Mitchell H. Hetrich
发明人： David E. Plotner , Edward E. Heald , Richard P. Sulecki , Frederick J. Bartnicki , Mitchell H. Hetrich
IPC分类号： E06C1/12 , E06C7/08 , E06C7/10 , E06C7/42 , F16B5/04
CPC分类号： E06C7/083 , E06C1/12 , E06C7/10 , E06C7/42 , F16B5/04
摘要： A member for connecting a rail to a horizontal element of a ladder. The member comprises a first portion that connects to the horizontal member. The member also comprises a second portion which connects to the rail and extends essentially in parallel with the rail. The second portion is integrally connected to the first portion such that the first portion and the second portion are one continuous piece. The second portion is in an angular relationship of less than 90.degree. with the first portion. A member for connecting a rail having a first rail flange and a second rail flange to a horizontal element of a ladder. The member comprises a first arm which connects to the first rail flange and the horizontal member. The member is also comprised of a second arm which connects to the second rail flange and the horizontal member. Additionally, the member comprises a central body which is integrally connected to the second arm and the first arm. The first arm, second arm and central body are one continuous piece, preferably of plastic. A ladder comprised of the member for each rail. A method for using a ladder. The method comprises the steps of placing a load on the ladder. Next there is the step of transferring forces generated from the load to a member connected between a rail of the ladder and a first step of the ladder.
摘要翻译：用于将轨道连接到梯子的水平元件的构件。该构件包括连接到水平构件的第一部分。该构件还包括连接到轨道并基本上与轨道平行延伸的第二部分。第二部分与第一部分一体地连接，使得第一部分和第二部分是一个连续的部分。第二部分与第一部分的角度关系小于90°。用于将具有第一轨道法兰和第二轨道法兰的轨道连接到梯子的水平元件的构件。该构件包括连接到第一轨道法兰和水平构件的第一臂。该构件还包括连接到第二导轨凸缘和水平构件的第二臂。另外，构件包括与第二臂和第一臂一体地连接的中心体。第一臂，第二臂和中心体是一个连续件，最好是塑料。由每个轨道的构件组成的梯子。使用梯子的方法。该方法包括将负载放置在梯子上的步骤。接下来，将从负载产生的力转移到连接在梯子的轨道与梯子的第一台阶之间的构件的步骤。

2. 发明授权

US06142255A Ladder, member for connecting a rail to a horizontal element of a ladder, and method 失效
标题翻译：梯子，用于将轨道连接到梯子的水平元件的构件以及方法
公开(公告)号：US06142255A
公开(公告)日：2000-11-07
申请号：US869494
申请日：1997-06-05
申请人： David E. Plotner , Edward E. Heald , Richard P. Sulecki , Frederick J. Bartnicki , Mitchell H. Hetrich
发明人： David E. Plotner , Edward E. Heald , Richard P. Sulecki , Frederick J. Bartnicki , Mitchell H. Hetrich
IPC分类号： E06C1/12 , E06C7/08 , E06C7/10 , E06C7/42 , F16B5/04
CPC分类号： E06C7/083 , E06C1/12 , E06C7/10 , E06C7/42 , F16B5/04
摘要： A member for connecting a rail to a horizontal element of a ladder. The member comprises a first portion that connects to the horizontal member. The member also comprises a second portion which connects to the rail and extends essentially in parallel with the rail. The second portion is integrally connected to the first portion such that the first portion and the second portion are one continuous piece. The second portion is in an angular relationship of less than 90.degree. with the first portion. A member for connecting a rail having a first rail flange and a second rail flange to a horizontal element of a ladder. The member comprises a first arm which connects to the first rail flange and the horizontal member. The member is also comprised of a second arm which connects to the second rail flange and the horizontal member. Additionally, the member comprises a central body which is integrally connected to the second arm and the first arm. The first arm, second arm and central body are one continuous piece, preferably of plastic. A ladder comprised of the member for each rail. A method for using a ladder. The method comprises the steps of placing a load on the ladder. Next there is the step of transferring forces generated from the load to a member connected between a rail of the ladder and a first step of the ladder.
摘要翻译：用于将轨道连接到梯子的水平元件的构件。该构件包括连接到水平构件的第一部分。该构件还包括连接到轨道并基本上与轨道平行延伸的第二部分。第二部分与第一部分一体地连接，使得第一部分和第二部分是一个连续的部分。第二部分与第一部分的角度关系小于90°。用于将具有第一轨道法兰和第二轨道法兰的轨道连接到梯子的水平元件的构件。该构件包括连接到第一轨道法兰和水平构件的第一臂。该构件还包括连接到第二导轨凸缘和水平构件的第二臂。另外，构件包括与第二臂和第一臂一体地连接的中心体。第一臂，第二臂和中心体是一个连续件，最好是塑料。由每个轨道的构件组成的梯子。使用梯子的方法。该方法包括将负载放置在梯子上的步骤。接下来，将从负载产生的力转移到连接在梯子的轨道与梯子的第一台阶之间的构件的步骤。

3. 发明授权

US5791439A Ladder, member for connecting a rail to a horizontal element of a ladder, and method, and apparatus and method for holding a washer 失效
公开(公告)号：US5791439A
公开(公告)日：1998-08-11
申请号：US426194
申请日：1995-04-21
申请人： David E. Plotner , Edward E. Heald , Kevin L. McIntire , Richard P. Sulecki , Mitchell H. Hetrich , Frederick J. Bartnicki
发明人： David E. Plotner , Edward E. Heald , Kevin L. McIntire , Richard P. Sulecki , Mitchell H. Hetrich , Frederick J. Bartnicki
IPC分类号： E06C1/12 , E06C7/08 , E06C7/10 , E06C7/42 , F16B5/04
CPC分类号： E06C7/083 , E06C1/12 , E06C7/10 , E06C7/42 , F16B5/04
摘要： A member for connecting a rail to a horizontal element of a ladder. The member comprises a first portion that connects to the horizontal member. The member also comprises a second portion which connects to the rail and extends essentially in parallel with the rail. The second portion is integrally connected to the first portion such that the first portion and the second portion are one continuous piece. The second portion is in an angular relationship of less than 90.degree. with the first portion. A member for connecting a rail having a first rail flange and a second rail flange to a horizontal element of a ladder. The member comprises a first arm which connects to the first rail flange and the horizontal member. The member is also comprised of a second arm which connects to the second rail flange and the horizontal member. Additionally, the member comprises a central body which is integrally connected to the second arm and the first arm. The first arm, second arm and central body are one continuous piece, preferably of plastic. A ladder comprised of the member for each rail. A method for using a ladder. The method comprises the steps of placing a load on the ladder. Next there is the step of transferring forces generated from the load to a member connected between a rail of the ladder and a first step of the ladder. The member can include an apparatus for holding a washer. An apparatus for holding a washer. The apparatus comprises a backing having a backing surface. The apparatus also comprises a retainer extending from the backing. The retainer holds the washer. The retainer has a front through which the washer is introduced into the retainer. Additionally, the apparatus comprises a stop extending from the backing. The stop is disposed adjacent to the front of the retainer and prevents the washer from coming out of the retainer when the washer is in the retainer. The present invention pertains to a method for holding a washer. The method comprises the steps of positioning the washer at a front of a retainer. Then there is the step of moving the washer past a stop adjacent the front of the retainer. Next there is the step of seating the washer in the retainer, with the stop preventing the washer from coming out of the retainer.

4. 外观设计

USD372105S Ladder pail shelf 失效
公开(公告)号：USD372105S
公开(公告)日：1996-07-23
申请号：US039016
申请日：1995-05-18
申请人： David E. Plotner
设计人： David E. Plotner

5. 发明授权

US07165649B2 Positioning system for folding ladder and method of installation of folding ladder using positioning system 有权
标题翻译：梯子定位系统及使用定位系统安装折叠梯的方法
公开(公告)号：US07165649B2
公开(公告)日：2007-01-23
申请号：US10635900
申请日：2003-08-07
申请人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson , David A. Winslow
发明人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson , David A. Winslow
IPC分类号： E06C9/00
CPC分类号： E04F11/064
摘要： A support frame for a folding ladder, a folding ladder positioning system, and a method for installing a folding ladder, are disclosed and pertain to folding ladders disposable within an opening, such as openings in a ceiling of a house, to provide temporary access between one floor or space and another floor or space. In one aspect, a support frame includes a plurality of separable support frame plates collectively configured to circumscribe the opening and a plurality of connection sites are disposed at opposing ends of each of the plurality of separable support frame plates to facilitate connection of each support frame plate to adjacent support frame plates. The connection sites include, for example, mating locking connectors or a plurality of matching through-holes, which permit insertion of a fastening means therethrough.
摘要翻译：公开了一种用于折叠梯子，折叠梯子定位系统和用于安装折叠梯子的方法的支撑框架，并且涉及在诸如房屋的天花板之类的开口内的一次性折叠梯子，以提供临时进入一个楼层或空间和另一个楼层或空间。在一个方面，支撑框架包括多个可分离的支撑框架板，其共同构造成围绕开口，并且多个连接位置设置在多个可分离支撑框架板的每一个的相对端部处，以便于连接每个支撑框架板到相邻的支撑框架板。连接部位包括例如配合锁定连接器或多个匹配的通孔，其允许紧固装置插入其中。

6. 发明授权

US07234203B2 Locking hinge for folding ladder 失效
标题翻译：用于折叠梯的锁定铰链
公开(公告)号：US07234203B2
公开(公告)日：2007-06-26
申请号：US10635896
申请日：2003-08-07
申请人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson , Joseph C. Dangrow
发明人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson , Joseph C. Dangrow
IPC分类号： E05F1/08
CPC分类号： E04F11/064 , E06C1/32 , Y10T16/528 , Y10T16/5385 , Y10T403/32336
摘要： A hinge for a folding ladder including a hinge latch movable between a locked position and an unlocked position disposed within a hinge latch cavity. The hinge latch includes a first locking portion protruding therefrom, an elongated slot formed configured to slidingly receive a hinge shaft, a first opening configured to receive a first biasing member, and a second opening configured to receive a locking member. Rotational movement of one hinge casing relative to another hinge casing is prevented by engagement of the first locking portion and locking member with a respective one of the first opening and second opening.
摘要翻译：一种用于折叠梯子的铰链，包括可在锁定位置和设置在铰链闩锁腔内的解锁位置之间移动的铰链闩锁。铰链闩锁包括从其突出的第一锁定部分，形成为被构造成滑动地接收铰链轴的细长槽，构造成接收第一偏置构件的第一开口和构造成接收锁定构件的第二开口。通过将第一锁定部分和锁定构件与第一开口和第二开口中的相应的一个接合来防止一个铰链外壳相对于另一个铰链外壳的旋转运动。

7. 发明授权

US06994184B2 Stowable ladder configured for installation in an opening 有权
标题翻译：可安装在开口中的可安装梯子
公开(公告)号：US06994184B2
公开(公告)日：2006-02-07
申请号：US10733765
申请日：2003-12-12
申请人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson
发明人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson
IPC分类号： E06C9/00 , E04G3/00
CPC分类号： E04F11/064 , E06C1/32 , E06C1/387 , E06C1/54
摘要： A folding ladder is configured for installation in an opening to provide access between one floor or space and another floor or space. The folding ladder includes, in one aspect, an upper ladder section having a left ladder rail and a right ladder rail, a lower ladder section having a left ladder rail and a right ladder rail, a hinge rotatably connecting the upper ladder section ladder rails to the lower ladder section ladder rails, and a plurality of steps rotatably disposed between the upper and lower ladder rails. The plurality of steps are configured for rotation between a retracted position and a deployed position. At least one step disposed between the upper ladder rails and at least one step disposed between the lower ladder rails are linked by at least one linkage member so that each of the noted steps rotates between a retracted position and a deployed position upon rotational movement of the upper ladder section relative to the lower ladder section between a closed position and an open position.
摘要翻译：折叠梯构造成用于安装在开口中以提供一个楼层或空间与另一楼层或空间之间的通道。折叠梯子在一个方面包括具有左梯子轨道和右梯子导轨的上部梯形部分，具有左梯子轨道和右侧梯子轨道的下部梯形部分，将上部梯形梯形梯形轨道可旋转地连接到下梯梯梯轨，以及可旋转地设置在上下梯轨之间的多个台阶。所述多个台阶构造成用于在缩回位置和展开位置之间旋转。设置在上梯形轨道之间的至少一个台阶和设置在下梯子轨道之间的至少一个台阶通过至少一个连杆构件连接，使得每个所述步骤在缩回位置和展开位置之间在旋转运动时旋转相对于下梯子部分的上梯部分在关闭位置和打开位置之间。

8. 发明授权

US06991063B2 Stowable ladder configured for installation in an opening 有权
标题翻译：可安装在开口中的可安装梯子
公开(公告)号：US06991063B2
公开(公告)日：2006-01-31
申请号：US10635897
申请日：2003-08-07
申请人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson
发明人： Brett A. Latimer , Ronald K. Burig , Christine A. Brown , David E. Plotner , John J. Fiumefreddo , Roy B. Bendickson
IPC分类号： E06C9/00
CPC分类号： E04F11/064 , E06C1/32 , E06C1/387 , E06C1/54
摘要： A stowable or foldable ladder is configured for installation in an opening between one floor or space and another floor or space. An upper ladder section includes a left ladder rail and a right ladder rail, a lower ladder section having a left ladder rail and a right ladder rail, a hinge rotatably connecting the upper ladder section left ladder rail to the lower ladder section left ladder rail and rotatably connecting the upper ladder section right ladder rail to the lower ladder section right ladder rail, and a plurality of steps rotatably disposed between the upper pair of ladder rails and the lower pair of ladder rails. The steps are configured for rotation between a retracted position and a deployed position.
摘要翻译：一个可收起或可折叠的梯子被配置为安装在一个地板或空间与另一个地板或空间之间的开口中。上梯子部分包括左梯子轨道和右梯子轨道，具有左梯子轨道和右梯子轨道的下部梯形部分，将梯形梯部分梯子梯子可转动地连接到下部梯子部分左梯子轨道的铰链，以及将上梯子部分的右梯子导轨与下梯子部分的右梯导轨可转动地连接，以及可旋转地设置在上一对梯轨和下一对梯轨之间的多个台阶。这些台阶被配置为在缩回位置和展开位置之间旋转。

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