Abstract: Disclosed is a liquid crystal display device to realize soft touch and sense touch regardless of illumination of external light or reflected light. The liquid crystal display device includes a liquid crystal panel including a first substrate and a second substrate facing each other, wherein a liquid crystal layer is interposed between the first substrate and the second substrate, an infrared sensor arranged on the first substrate, an infrared filter arranged corresponding to the infrared sensor arranged on the second substrate facing the first substrate, a first polarizing plate adhered to the back surface of the first substrate, a second polarizing plate adhered to the back surface of the second substrate, a light guiding plate arranged under the first polarizing plate, a first light source arranged on one side of the light guiding plate to emit white light, and a second light source arranged on the other side of the light guiding plate to emit infrared light to the light guiding plate.

Abstract: The invention provides a waterproof connector in which a seal is maintained around a bolt without having to increase the number of components. A bolt 39 is passed through a through hole 36 of a bolt attachment member 35, this bolt 39 being passed from a countersunk hole 46 of a grommet 40 attached so as to cover a posterior face of a female housing 30. A nut 26 of a male housing 20 is fastened to this bolt 39, this fastening the two housings 20 and 30 together. A circular sealing member 50 is formed in a manner whereby it adjoins a central hole 47 of a base face 46A of the countersunk hole 46, a shaft 39A of the bolt 39 passing through this sealing member 50 in a manner whereby it fits tightly therewith. The sealing member 50 fits into a housing hole 53 of the bolt attachment member 35.

Abstract: A method of entering a hand-marked response into a system by altering a predetermined modified bar code symbol in a manner so that the bar code is rendered readable. In this manner, bar code reading devices can be utilized to detect the hand marked response. In an alternative embodiment, one of several potential responses may be marked and rendered non-decodable. A bar code reading device determines which of the several responses has been hand-marked by ascertaining which is non-decodable. Marking the response sheets may be aided by using an opaque template sheet or using a pressure sensitive overlay sheet.

Abstract: A method of entering a hand-marked response into a system by altering a predetermined modified bar code symbol in a manner so that the bar code is rendered readable. In this manner, bar code reading devices can be utilized to detect the hand-marked response. In an alternative embodiment, one of several potential responses may be marked and rendered non-decodable. A bar code reading device determines which of the several responses has been hand-marked by ascertaining which is non-decodable. Marking the response sheets may be aided by using an opaque template sheet or using a pressure sensitive overlay sheet.

Abstract: An apparatus for obstructing a standardized test form from view of all but the test taker. The apparatus permits a test taker to see the necessary portions of the answer sheet but obstructs and obscures the view of answer marks from shallow angles or from a distance.

Abstract: A teaching aid for increasing the memorization of a large number of equations comprising a front cover having a vertical column of horizontally disposed completed equations visible thereon and which front cover forms a cut out portion adjacent the vertical column and a writing sheet which is removable and positionable under the cut out portion of said front cover for providing a replaceable writing area accessible through said cut out portion.

Abstract: A template is intended for use with user marked lottery tickets. The template consists of two sheets of stiff material joined along a fold line. The sheets conform in shape and size to the lottery ticket to be marked. One sheet of the template is provided with an array of perforations outlining removable areas on the template that correspond in number, position and form to the user markable spaces on the lottery ticket. The template is preferably a transparent plastic material. In use, the removable areas corresponding to numbers to be marked on the lottery ticket are removed from the template so that a writing implement may be introduced through the resulting open areas for marking the desired spaces on the ticket. The template may be used not only for marking a ticket but for protecting the ticket from damage so that it can be used from time to time.

Abstract: An overlay having a window frame includes a block of questions positioned to be lined up with an empty space on a census directory. Answers to the survey questions are written in the empty space on the census directory in the window frame. The method of this invention is well suited for taking political surveys using registered voters' lists by placing the overlay on the voters' list and moving it down the series of names on the list and recording the answers to the survey questions as they are provided.

Abstract: A machine printer for marking a machine readable code on envelopes and the like allows house holders and small businesses to print the postal precode on envelopes so they can be read by a machine reader rather than a keypunch operator. The printer has an adjustable jig to hold one end of an envelope, the jig has two portions which join together in sliding relationship for different sized envelopes. Each portion has a corner slot to position an envelope, and at least one of the portions has a stencil or other marking means for producing a mark on an envelope, the stencil or other marking means located a fixed distance from one corner of the envelope.

Abstract: A folder having an opaque or transparent plastic template heat sealed along one edge to an overlapping opaque plastic layer. The template is rectangular and has rows and columns of rectangular openings therethrough. A lottery card is then inserted between the template and the overlapping plastic layer. The lottery card has rows and columns of indicia outlining rectangular areas thereon, all of which may be placed in registration with the template openings. Selected areas may then be filled in by hand with a ball point pen or pencil or other writing instrument.