Abstract: A test scoring system and method of testing a plurality of individuals utilizes a hand-held answer recording unit for each individual including a user operable input device for receiving and storing user answers. A scoring processor is provided for receiving answer data from each answer recording unit and comparing the answers with an answer key in order to determine conforming answers. A data transfer unit is connected with the scoring processor to receive answer data from the answer recording unit and transfer the answer data transparently to the scoring processor. Each student is provided a hand-held answer recording unit, along with a test, which is typically in written format. The user scrolls through the answer locations in the hand-held answer recording unit and inputs in each location an answer to each question.

Abstract: A remote response system includes a central control unit and a plurality of remotely-located response units each having keypads for entering a selection from a user. The central control unit sequentially transmits distinct address words and includes redundant receivers for receiving data words transmitted by response units. Each response unit becomes powered-up upon the entry of a user response and transmits a data word, corresponding to the user selection, upon receipt of its unique address word. The central control unit examines the validity of each data bit received and the validity of an entire data word to determine if both a character and its complement are received. If a valid data word is received, the central control unit transmits an acknowledge bit, which powers-down the response unit that sent the valid word.

Abstract: A wireless signaling between one or more remote locations and a central location includes a transmitter at each remote location and switches for providing signals indicating status information on each remote location. A logic circuit coupled to the switches and to the transmitter provide signals effecting transmission of a signal modulated to uniquely identify the remote location and the status represented by the switches. A receiver at the central location is coupled to a second logic circuit for decoding the signals received from the transmitter and is coupled to indicators for providing an indication of the status at the first location.

Abstract: An invalid bed includes a frame and an overhead support structure which provides an elevated diagonally extending support surface for a pivot arm. The pivot arm is pivotally anchored to a corner post and extends over and is supported by the support surface. The pivot arm swings from a position at the side of the bed frame to its center and includes a strap which an invalid can grasp for elevating himself and swinging onto or out of the bed.

Abstract: A height adjustable table adapted for wheelchair use includes a top member and depending end panels defining channel structure for telescopingly receiving leg structures at the ends of the top member. An actuator includes an extendable and retractable rod which is connected to the leg structures by flexible cables which are reeved over pulleys. Extension and retraction of the rod results in raising and lowering of the top member and end panels with respect to the leg structures. Readily accessible hand controls are positioned for easy access by the user for raising and lowering the top member. An adjustable control automatically limits the maximum height of the top surface with respect to the leg structures.

Abstract: A wireless electrical teaching system includes an instructor operated console with a plurality of lesson sources and means for transmitting the lesson source information to students, each having a transceiver unit which can be used to select one of the desired lesson sources. The console includes means for generating a unique student identification code transmitted on a common carrier frequency for all students but identifying an individual student for purposes of monitoring the student's progress during a lesson or for intercommunications between the instructor and a student. Each of the student transceivers include code detecting means responsive only to the unique code indentifying the student for generating a control signal which actuates a student transmitter for transmitting the student's voice back to the instructor during a monitoring mode of operation. The console also includes an intercom transmission circuit and a circuit for modifying the student code.

Abstract: A remote response system includes a central control unit and a plurality of remotely-located response units each having keypads for entering a selection from a user. The central control unit sequentially transmits distinct address words and includes redundant receivers for receiving data words transmitted by response units. Each response unit becomes powered-up upon the entry of a user response and transmits a data word, corresponding to the user selection, upon receipt of its unique address word. The central control unit examines the validity of each data bit received and the validity of an entire data word to determine if both a character and its complement are received. If a valid data word is received, the central control unit transmits an acknowledge bit, which powers-down the response unit that sent the valid word.