公开(公告)号：US3964696A

公开(公告)日：1976-06-22

申请号：US519371

申请日：1974-10-30

申请人： Casimir T. Orzechowski ,  Nat Seiden ,  Anthony Mycka, Jr.

发明人： Casimir T. Orzechowski ,  Nat Seiden ,  Anthony Mycka, Jr.

IPC分类号： F42B10/16 ,  F42B10/30 ,  F42B13/32

CPC分类号： F42B10/16 ,  F42B10/30

摘要： The spin rate of a rocket missile is controlled by bevelling the inside ofhe leading edge of the missile fins. Altering the bevel angle controls the rate of spin. The spin rate is also controlled by sweeping back the leading edges of the fins.

摘要翻译： 火箭导弹的旋转速度由导弹翅片前缘的内部倾斜控制。 改变斜角控制旋转速度。 旋转速率也可以通过扫掠翅片的前缘来控制。

公开(公告)号：US3952970A

公开(公告)日：1976-04-27

申请号：US501307

申请日：1974-08-28

申请人： Casimir T. Orzechowski ,  Nat Seiden

发明人： Casimir T. Orzechowski ,  Nat Seiden

IPC分类号： F42B10/16 ,  F42B13/32

CPC分类号： F42B10/16

摘要： This invention comprises wrap-around fins for a rocket missile, the fins ng mounted on rods which are borne by a spool-like runner which encircles the nozzle body of a rocket missile. The nozzle body is exteriorly coated with teflon. The spool-like member has a ring-shaped extension on each end, each of which fits into a ring-shaped teflon bearing which, in turn, fits into a slot in a flange on the nozzle body whereby the spool-like member and the fins which are mounted on it are free to rotate relative to the nozzle (and therefore the rocket) body. The interior of the nozzle of the rocket is formed with flutes, the action of the exiting gases on the flutes causing the missile body to rotate in flight.

摘要翻译： 本发明包括一种用于火箭导弹的环绕翅片，翅片安装在由围绕火箭导弹的喷嘴体的线轴状转轮承载的杆上。 喷嘴体外部涂有聚四氟乙烯。 线轴状构件在每个端部上具有环形延伸部，每个端部均装配在环形聚四氟乙烯轴承中，环形聚四氟乙烯轴承又装配在喷嘴主体上的凸缘中的狭槽中，由此使阀芯状部件和 安装在其上的翅片相对于喷嘴（因此是火箭）主体自由旋转。 火箭喷嘴的内部形成有凹槽，排出的气体在凹槽上的作用导致导弹体在飞行中旋转。

公开(公告)号：US4281835A

公开(公告)日：1981-08-04

申请号：US63604

申请日：1979-08-03

申请人： Nat Seiden

发明人： Nat Seiden

IPC分类号： A63F1/02 ,  A63F9/00 ,  A63F1/00

CPC分类号： A63F1/02 ,  A63F9/0098 ,  A63F2009/0004

摘要： A game method and apparatus utilizes a first and second plurality of card-like devices, each bearing indicia. The first plurality of card-like devices, include indicia depicting various arithmetic symbols, while the second plurality of card-like devices include indicia representing numerals. The symbol bearing cards determine the method of play of the game in which the numeral bearing cards may be matched, added, subtracted, multiplied, divided, or deleted from play, in accordance with a method of play determined by the rules of the game.BACKGROUND OF THE INVENTIONField of the InventionThis invention relates to playing cards used for educational purposes.In order to induce children, especially, to practice arithmetic concepts among themselves without the aid of a teacher, the present invention makes such an endeavor more fun. Children, even adults, like to play games, and many like to play card games. The present invention uses as its basis the idea of a deck of playing cards, and specifies a simple imprinting of numbers on the face of each playing card. The game utilizes the numbers and arithmetic operations in matching, building or stealing card game operations for fun and drill.Prior educational games and card games use numerals printed in some specified combination on the cards. None, however, utilize such a straightforward use of individual numbers on the face of each card in the deck without distracting printed directions on the cards. For example, U.S. Pat. No. 1,699,629, issued to Phifer on Jan. 22, 1929 for an educational card game divided into three types of cards, those directing the player to "add", those directing the player to "subtract" and those directing the player to "multiply" only certain specified numbers on the same card. Thus, the instruction and playing cards were not interchangeable or separate; and the players could not use their decisional ability to select any desired arithmetic operation to be used in conjunction with the numbers on the cards.SUMMARY OF THE INVENTIONTherefore, the present invention contemplates a simple design and manufactured set of playing cards with numbers on the playing card faces and mathematical symbols on the instruction cards, for fun and drill in basic arithmetic operations.It is therefore an object of this invention to overcome the limitations and disadvantages in the games of the prior art.One of the objects of the invention is to provide a game embodying improved principles of design and construction.Another object of the invention is to provide an easy to learn and use card game whose educational purpose is to provide a means for drill in the basic arithmetic operations of addition, subtraction, multiplication, and division.A further object of the invention is to specify card game operations on separate cards, that can be performed on the separate playing cards, which make the learning of the arithmetic itself fun because the playing of the card game itself is fun. Some of these card game operations are laterally familiar to children who have played other card games, and it is seen that their use in the practice of the present invention in a game, will impart some of the sense of excitement, surprise and suspense, which is a prime accompaniment to games played for amusement and diversion.An arithmetic card game, according to the principles of this invention, comprises a deck or plurality of playing cards and a deck or plurality of mode indicator or mathematical instruction cards and a set of pertinent playing instructions.Further objects and advantages of this invention will appear more clearly from the following description of a nonlimiting illustrative embodiment and the accompanying drawings in which like numerals designate like parts throughout the several views.

摘要翻译： 游戏方法和装置利用第一和第二多个卡状装置，每个装有标记的装置。 第一组多个卡状装置包括描绘各种算术符号的标记，而第二组卡片式装置包括表示数字的标记。 符号轴承卡根据由游戏规则确定的游戏方式确定游戏的玩法，其中可以从游戏中匹配，添加，减去，乘以，分割或删除数字轴承卡。