公开(公告)号：US5638308A

公开(公告)日：1997-06-10

申请号：US361815

申请日：1994-12-22

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： G06F15/02 ,  G06F3/00

CPC分类号： G06F15/0225

摘要： A portable, preferably pocket-sized electronic calculator includes provision for disabling the use of certain keys on its keyboard. By holding down a number key or certain of the function keys for a predetermined period of time such as two to four seconds, the user can disable the selected number or function. This allows the calculator to be used effectively in teaching factoring and various mathematical properties and leads the student to innovate in substituting different numbers and functions in solving problems in the student's own way. For discontinuing all key disabling a reset key preferably is provided.

摘要翻译： 便携式的，最好是袖珍型的电子计算器包括禁止在其键盘上使用某些键的设置。 通过按住数字键或某些功能键达预定时间段（例如2至4秒），用户可以禁用所选择的数字或功能。 这使得计算器能够有效地用于教学分解和各种数学属性，并引导学生用不同的数字和功能来创新，以学生自己的方式解决问题。 为了停止所有键禁用，优选地提供复位键。

公开(公告)号：USD374029S

公开(公告)日：1996-09-24

申请号：US43186

申请日：1995-08-28

申请人： William T. Stokes

设计人： William T. Stokes

公开(公告)号：US5404186A

公开(公告)日：1995-04-04

申请号：US267558

申请日：1994-06-28

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： G03B21/132 ,  G06F15/02 ,  G09B5/00 ,  G03B21/00

CPC分类号： G09B5/00 ,  G03B21/132 ,  G06F15/0216 ,  Y10S353/03 ,  Y10S353/05

摘要： A hand-held calculator has a transparent window carrying a liquid crystal display as well as transparent number and function key locations such that when placed on an overhead projector, the calculator can be used to demonstrate to a classroom of students all operations performed in a sequence of mathematical operations. The plastic casing of the calculator has one or more small holes passing through the casing at corners, so that a string or line can be used to tether the calculator to the overhead projector, preventing damage to the calculator from a fall to the floor. A further feature of the calculator is a protrusion or foot at each corner of the back of the calculator casing, for holding the back surface of the calculator slightly above the light platform of the overhead projector, for cooling of the liquid crystal display by air passing between the light table and calculator.

摘要翻译： 手持式计算器具有透明的窗口，携带液晶显示器以及透明的数字和功能键位置，使得当放置在高架投影仪上时，计算器可用于向学生向课堂展示按顺序执行的所有操作 的数学运算。 计算器的塑料外壳有一个或多个小孔穿过外壳在角落处，从而可以使用弦或线将计算器系在高架投影仪上，防止计算器从落地到地面受到损坏。 计算器的另一个特征是在计算器外壳背部的每个角落处的突起或脚，用于将计算器的后表面稍微保持在高架投影仪的光平台上方，用于通过空气通过来冷却液晶显示器 在光台和计算器之间。

公开(公告)号：US6120022A

公开(公告)日：2000-09-19

申请号：US178376

申请日：1998-10-23

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： A63F9/00 ,  A63F11/00 ,  A63B71/00

CPC分类号： A63F11/0011 ,  A63F2011/0016

摘要： A spinner for randomly selecting a number has a very low friction bearing between a transparent spinner member and a transparent base plate. In one embodiment the base and spinner are formed of a transparent plastic such as Plexiglas, with a cone point set screw mounted in a threaded hole of the base plate and providing a narrow point for seating of the spinner member. A transparency with annularly arranged numbers may be placed at the bottom side of the transparent base plate, and different numerical arrays or symbol arrays may be selected. The spinner member has a central hole fitted with a central hub that has a recess formed into an internal cone shaped apex. The cone angle of the set screw point is steeper than that in the apex of the hub recess, so that the spinner member rests essentially only on the narrow point of the set screw. When the number selector device is placed on an overhead projector, as in a classroom setting, a gentle turn of the spinner member will generate five or ten revolutions of the spinner arrow, which gradually comes to a stop in the random selection of a number or symbol.

摘要翻译： 用于随机选择数字的旋转器在透明旋转构件和透明基板之间具有非常低的摩擦力。 在一个实施例中，基部和旋转器由诸如有机玻璃的透明塑料形成，锥形固定螺钉安装在基板的螺纹孔中，并提供用于旋转构件的放置的狭窄点。 可以在透明基板的底侧放置具有环形布置数量的透明体，并且可以选择不同的数字阵列或符号阵列。 旋转构件具有装配有中心毂的中心孔，该中心毂具有形成为内锥形顶点的凹部。 固定螺钉点的锥角比轮毂凹部顶点的锥角更陡，使得旋转体构件基本上仅在定位螺钉的狭窄位置上。 当数字选择器装置放置在高架投影仪上时，如在教室设置中，旋转器构件的平缓转动将产生五转或十转的旋转箭头，其逐渐停止在随机选择的数字或 符号。

公开(公告)号：US5660387A

公开(公告)日：1997-08-26

申请号：US590452

申请日：1996-01-23

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： A63F9/12 ,  G09B23/04

CPC分类号： A63F9/12 ,  G09B23/04

摘要： A set of polyhedrons have shapes capable of fitting together, in one or more ways, into a solid geometric shape such as a rectangular solid or more specifically, a cube. The polyhedrons include five-sided polyhedrons made up of a regular tetrahedron and an irregular tetrahedron abutted together as one solid; alternately, the two separate tetrahedra can be included in lieu of one or more of the five-sided polyhedrons, for assembly in the puzzle. The set of polyhedrons includes separate irregular tetrahedra and may include a regular octahedron. Preferably each shape of polyhedron is in a different color. In a preferred embodiment, the polyhedrons are all solid throughout and are of the same density, and that density is preferably the same density as water to enable the teaching of certain relationships. The set of polyhedrons function not only as a puzzle, for fitting into a transparent housing such as a cube, but also for educational purposes in teaching geometry.

摘要翻译： 一组多面体具有能够以一种或多种方式装配在一起的固体几何形状（例如矩形固体或更具体地立方体）的形状。 多面体包括由正四面体和不规则四面体构成的五面多面体，其以一个固体邻接在一起; 可替代地，可以包括两个单独的四面体来代替五面多面体中的一个或多个，以便在拼图中组装。 该组多面体包括单独的不规则四面体，并且可以包括正八面体。 优选地，多面体的每个形状都是不同的颜色。 在优选的实施方案中，多面体全部是固体，并且具有相同的密度，并且该密度优选地与水的密度相同以使教导某些关系。 多面体的功能不仅作为一个难题，适合于透明的房屋，如立方体，也可用于教学几何教学。

公开(公告)号：US5613463A

公开(公告)日：1997-03-25

申请号：US368299

申请日：1995-01-03

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： G09F11/23 ,  G09F11/04

CPC分类号： G09F11/23

摘要： A device for assigning numbers to products having casings, such as electronic calculators, has at least two digit wheels, each preferably having digits 0 through 9. One of the digit wheels is transparent, while the other may be opaque, with a light background. The digits on each of the two wheels are offset from radial lines such that two-digit numbers can be made with selected digits juxtaposed. If three digit wheels are included the tens wheel has digits centered on radial lines. The casing of the product to be numbered has a number viewing window and an internal peg on which the digit wheels are held and can be rotated for adjustment, as well as at least one peg or pin for engaging registry holes to align and maintain the digit wheels in proper position. In a preferred embodiment the digit wheels are manipulated to the proper number by removing the back from the casing.

摘要翻译： 用于将数字分配给具有壳体的产品（例如电子计算器）的装置具有至少两个数字轮，每个数字轮优选地具有数字0到9.数字轮之一是透明的，而另一个可以是不透明的，具有浅色背景。 两个轮子中的每一个上的数字都与径向线偏移，使得两位数字可以与并置的选定数字一起进行。 如果包含三位数的数字轮，数十个转轮的数字以径向线为中心。 要编号的产品的外壳具有数字观察窗口和内部钉，数字轮被保持在其上并且可以旋转以进行调节，以及至少一个钉或销，用于接合注册孔以对准和维持数字 车轮处于正确的位置。 在优选实施例中，通过从壳体中移除背部，数位轮被操纵到适当的数量。

公开(公告)号：US5590944A

公开(公告)日：1997-01-07

申请号：US40538

申请日：1993-03-30

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： G03B21/132 ,  G06F15/02 ,  G09B5/00 ,  G09B19/00

CPC分类号： G03B21/132 ,  G06F15/0216 ,  G09B5/00 ,  Y10S353/03

摘要： An electronic timing device has a transparent liquid crystal display for use on an overhead projector, for projecting a large image of the LCD numerals on a screen or wall of a classroom, for timing of tests or other activities. The timer has a plastic casing, various function keys, a solar cell and/or battery, other internal electronics and a transparent liquid crystal display. Foldable legs of the timer, when open, maintain the timer a set distance above the light stage of the projector so as to prevent the LCD from overheating. One of the foldable legs, in the closed position, serves as protection and as a reflective backing for the LCD, so that the timer can function as a desk top LCD clock in the closed position. The timing device can function as a clock or timer in various modes.

摘要翻译： 电子定时装置具有用于高架投影仪的透明液晶显示器，用于将大量图像的LCD数字投影在教室的屏幕或墙壁上，用于测试或其他活动。 定时器具有塑料外壳，各种功能键，太阳能电池和/或电池，其他内部电子元件和透明液晶显示器。 定时器的可折叠腿，当打开时，将定时器保持在投影机的光级上方的设定距离，以防止LCD过热。 在关闭位置，可折叠腿之一用作LCD的保护和反射背衬，因此定时器可用作处于关闭位置的桌面LCD时钟。 定时设备可以作为各种模式的时钟或定时器。

公开(公告)号：USD342685S

公开(公告)日：1993-12-28

申请号：US897513

申请日：1992-06-11

申请人： William T. Stokes

设计人： William T. Stokes

公开(公告)号：US5035502A

公开(公告)日：1991-07-30

申请号：US400158

申请日：1989-08-28

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： G03B21/132 ,  G06F15/02 ,  G09B5/00

CPC分类号： G09B5/00 ,  G03B21/132 ,  G06F15/0216 ,  Y10S353/03 ,  Y10S353/05

摘要： A hand-held calculator has a transparent window carrying a liquid crystal display as well as transparent number and function key locations such that when placed on an overhead projector, the calculator can be used to demonstrate to a classroom of students all operations performed in a sequence of mathematical operations. The plastic casing of the calculator has one or more small holes passing through the casing at corners. Another feature of the calculator is an improved keyboard of relatively small domain size for each key, with a spacer grid on the back surface of the keyboard membrane panel overlay element, effective to provide pressure isolation of an active key from adjacent keys and also to prevent other pressures on the keyboard from causing mistaken entries. A further feature of the calculator is a protrusion or foot at each corner of the back of the calculator casing. Finally, the calculator in a preferred embodiment has a plurality of different background colors for different groups of the transparent function keys.

摘要翻译： 手持式计算器具有透明的窗口，携带液晶显示器以及透明的数字和功能键位置，使得当放置在高架投影仪上时，计算器可用于向学生向课堂展示按顺序执行的所有操作 的数学运算。 计算器的塑料外壳在拐角处有一个或多个穿过外壳的小孔。 计算器的另一个特征是每个键具有相对小的域大小的改进的键盘，在键盘膜面板覆盖元件的后表面上具有间隔栅格，有效地提供活动键与相邻键的压力隔离，并且还防止 键盘上的其他压力导致错误输入。 计算器的另一个特征是在计算器外壳的后部的每个角落处的突起或脚。 最后，优选实施例中的计算器具有用于不同组的透明功能键的多种不同的背景颜色。

公开(公告)号：US4949843A

公开(公告)日：1990-08-21

申请号：US401185

申请日：1989-08-31

申请人： William T. Stokes

发明人： William T. Stokes

IPC分类号： A45C7/00 ,  A45F5/00 ,  A47F7/14 ,  A47G29/00

CPC分类号： A47G29/00 ,  A45C7/0095 ,  A45F5/00 ,  A47F7/146

摘要： An item storage device with a plurality of open-topped storage pockets in a matrix of rows and columns is formed of a single sheet of material, preferably of woven fabric. The single sheet is lapped over in a series of horizontal fold lines, forming alternating three-ply areas and single-ply areas. An overlap opening at the top of each three-ply area or row forms the pockets of that row. Left and right ends of the folded sheet are folded on a vertical fold line to form a small hem which is stitched on a vertical line to form closed margins at left and right. Horizontal stitch lines are made to hold at least two of the three plies together along horizontal lines which define the bottoms of the pockets. Additional vertical stitch lines are made to define and separate the pockets laterally. In preferred embodiments a series of circular grommets are secured through a doubled-over fabric hem along the top edge of the carrying device, to enable suspending the device vertically. A series of calculators, for example, may be carried in the pockets, as for classroom use.

摘要翻译： 具有行列列的多个开顶储存袋的物品存放装置由单张材料制成，优选为机织织物。 单张纸在一系列水平折叠线上搭搭，形成交替的三层区域和单层区域。 在每个三层区域或行的顶部的重叠开口形成该排的口袋。 折叠片材的左右端部折叠在垂直折线上以形成缝制在垂直线上的小折边，以在左侧和右侧形成封闭的边缘。 水平缝合线被制成使三个层中的至少两个沿着水平线保持在一起，所述水平线限定了袋的底部。 制造另外的垂直线迹线以横向限定和分离凹坑。 在优选实施例中，沿着承载装置的顶部边缘，一系列环形索环通过双层织物卷边固定，以使得能够垂直悬挂该装置。 例如，一系列计算器可以在口袋中携带，用于教室使用。