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| Number | Title | Issue Date |
| 6240604 | Zipper slide handle, tab or pull apparatus A novel handle tab or pull for a zipper which comprises a unitary wire-like resilient member having an integral spring member and including a pair of offset, spring biased gripper members which are squeezed together against the tension of the integral spr... | 06/05/2001 |
| 5323642 | Non-invasive testing apparatus for submersible timepieces Non-invasive, portable, modular testing apparatus for non-invasively testing timepieces for fluid integrity without damaging or dismantling the timepiece and without interrupting the timekeeping function or operation thereof, including a transparent tubul... | 06/28/1994 |
| 4691829 | Method of and apparatus for detecting change in the breakoff point in a droplet generation system A particle separator for sorting particles suspended in a liquid according to certain characteristics, including a method of and apparatus for detecting a change in the droplet breakoff point of a liquid jet stream which is subjected to vibrations. The vi... | 09/08/1987 |
| 4631483 | Particle analyzing apparatus and method of moving particles in suspension through such apparatus A particle analyzing apparatus and method of moving and counting particles in suspension through such an apparatus. The particle analyzing apparatus comprises a particle counting device wherein particles in suspension are caused to be moved through an ape... | 12/23/1986 |
| 4403235 | Optical scanning and imaging system utilizing laser diode Photo-optical reproducing, copying/printing apparatus wherein a solid state laser diode is caused to emit a divergent beam of light which is collected and collimated. A cylindrical multi-element lens shapes the beam first in a vertical and then in a secon... | 09/06/1983 |
| 4379968 | Photo-optical keyboard having light attenuating means The invention relates to photo-optical detection by coded aperture in which photo-optical keyboard apparatus includes a pattern arrangement of keys in rows and columns wherein each row is provided with a light source or generator optically couplable to a ... | 04/12/1983 |
| 4218647 | Voltage regulator with current limiting circuitry Voltage regulator having current limiting circuitry. The voltage regulator includes an operational amplifier which has a substantially high output impedance and is disposed in a negative feedback configuration to provide an output signal which is the diff... | 08/19/1980 |
| 4208075 | Zero clearance linear bearing apparatus A zero clearance linear bearing wherein a hollow, elongate cylindrical member is provided with a number of peripheral projections or castellations at opposite ends thereof. Alternate ones of such castellations or projections extend outwardly away from the... | 06/17/1980 |
| 4189078 | Paper tractor locking apparatus A mechanism is provided for securing a paper driving tractor device along a relatively thin elongate member effective in the released condition to permit the tractor to be positioned at will along said elongate member while in the locked condition enablin... | 02/19/1980 |
| 4182388 | Fluid coupling system A fluid coupling system employs a cap assembly and a connector assembly to provide a leakproof fluid coupling between a liquid container and a device requiring liquid. The cap assembly consists of a cap, a filler valve assembly, a spring and a cap gasket.... | 01/08/1980 |
| 4175719 | Microfilm cassette module An assembly for housing microfilm is provided. The assembly includes a first cartridge, a second cartridge, and a connector assembly for detachably connecting the first cartridge to the second cartridge along an offset axis of the assembly. The first and ... | 11/27/1979 |
| 4157489 | Servo control system An apparatus forming an incremental motion system is described for controllably moving a load from a first position to a second position in a forward mode to track a moving object field in response to an external reference signal. The apparatus moves the ... | 06/05/1979 |
| 4155032 | Constant illumination apparatus An apparatus that provides constant illumination in response to an AC input power source having variable magnitude. The input power passes through a full wave rectifier and is then switched by a solid state switching device having conductive and nonconduc... | 05/15/1979 |
| 4133262 | Inking apparatus An endorser for use in document processing apparatus is provided with a matrix wire printer for printing variable information on documents as they are transported at a controlled speed along a transport path forming part of an endorsing station, and with ... | 01/09/1979 |
| 4131899 | Droplet generator for an ink jet printer An ink jet printer having a piezoelectric capillary injector-type droplet generator. The droplet generator includes an integral body having formed within it a single chamber that receives and holds ink under capillary action. A nozzle defined by one or mo... | 12/26/1978 |
| 4128841 | Droplet microphone A microphone is provided for converting the impact force of a moving charged droplet into a corresponding electrical signal. A vertical support member supports a diaphragm in the path of the moving droplet. The diaphragm flexes or vibrates in response to ... | 12/05/1978 |
| 4124121 | Document sorter system having interchangeable pocket modules A document sorting system includes a concatenation of document receiving modules, each module having a plurality of pockets and being distinguishable from another module only by its position in the concatenation. A coding circuit is included in each modul... | 11/07/1978 |
| 4123821 | Self locking door opening device and assembly A self locking door opening device and assembly are provided, the door having an aperture extending therethrough. The assembly includes a grip and a retainer latch. The grip includes a pair of side walls and a base member from which the side walls extend.... | 11/07/1978 |
| 4117430 | Keyboard switch A keyboard switch is actuated by the depression of a magnetized plunger into the region of a magnetic sensing device positioned at the lower extreme of plunger travel. The plunger is integrally formed of a plastic, magnetizable material and has a central,... | 09/26/1978 |
| 4111052 | Pressure-sensitive writing stylus A pressure-sensitive pen for use in a signature verification system is responsive to the handwriting pressure applied by the pen user to develop a signal representative of the pressure. In the preferred form, the pen comprises a cylindrical barrel that ho... | 09/05/1978 |
| 4110675 | Return and position control for a DC servo system An apparatus is provided for controllably moving a load in a return mode back to a first or home position by a motor driven shaft, which shaft moves the load toward a second position in a forward mode to track a moving object field. An apertured fan-shape... | 08/29/1978 |
| 4107593 | Current control circuit An electronic circuit is provided for controlling the energization of the windings of a stepper motor. The electronic circuit is responsive to a sequencing circuit which selects which one of the stepper windings is to be energized. The electronic circuit ... | 08/15/1978 |
| 4107653 | Document processing, magnetic character detecting apparatus A document processing apparatus that detects magnetic characters on documents as they pass therethrough. The apparatus includes a transport path, pairs of wheels for driving the documents through the apparatus, a DC magnetic writing device and a magnetic ... | 08/15/1978 |
| 4104682 | Apparatus for reducing the number of undetected errors read along the length of a binary information bearing medium An apparatus is described for reducing the number of undetected errors serially read along the length of a magnetic stripe containing binary information. The magnetic stripe is adhesively attached to a plastic card. A serial self-clocking data stream is d... | 08/01/1978 |
| 4097731 | Automatic gain control for photosensing devices A beam-of-light (BOL) sensor having means for regulating the intensity of the sensor light source to compensate for extraneous factors in the operating environment, e.g. dust accumulation, that may affect consistent sensor operation. The BOL sensor includ... | 06/27/1978 |
| 4097732 | Automatic gain control for photosensing devices A beam-of-light (BOL) sensor having means for regulating the intensity of the sensor light source to compensate for extraneous factors in its operating environment, e.g., dust accumulation, component aging, misalignment, etc., that may affect consistent s... | 06/27/1978 |
| 4069755 | Ribbonless endorser for printing both fixed and variable information on moving documents An endorser for use in document processing apparatus is provided with a matrix wire printer for printing variable information on documents as they are transported at a controlled speed along a transport path forming part of an endorsing station, and with ... | 01/24/1978 |
| 4068212 | Method and apparatus for identifying characters printed on a document which cannot be machine read A method and apparatus for identifying a character which cannot be machine read so that an operator may observe the identified character and make the necessary correction. A document such as a bank check or the like which has a field of encoded characters... | 01/10/1978 |
| 4064388 | Decoder clutching system for minicomputers A decoder clutching system for use in a minicomputer such as the Burroughs Series-L or TC-Series minicomputer is employed to reduce noise and extend the life of the decoder while minimizing power consumption. An electromagnetic master clutch is secured to... | 12/20/1977 |
| 4063219 | Character recognition system An apparatus and method for recognizing a presented character are provided. The apparatus includes a scanner for extracting black and white information from a document in the form of an analog electrical signal. The analog electrical signal is converted i... | 12/13/1977 |
| 4058266 | Strip length monitoring apparatus An apparatus for monitoring the length of a continuous strip of material, such as film, is disclosed. The apparatus includes an alternating current actuated supply motor which drives a rotatable shaft which retains and dispenses a roll of the strip. A cap... | 11/15/1977 |
| 4046961 | Conditioning system for transducer signals A signal conditioning system for improving the analog signal-to-noise ratio. The system first filters (to reduce the extrinsic noise outside the bandpass), then squares (to reduce the intrinsic noise inside the bandpass), finally transforms the improved a... | 09/06/1977 |
| 4037535 | High speed printing apparatus The disclosure relates to item or document signing apparatus for imprinting a legally acceptable signature and/or date, etc., upon individual items or documents fed on demand thereto at high speed from an input to an output hopper in a stop-start operatio... | 07/26/1977 |
| 4034342 | Magnetic character recognition system employing a dynamic threshold voltage determination system An improved magnetic character recognition system employing a linearly operated dynamic or variable threshold voltage determination system and signal deterioration compensation circuits for expanding the range of dynamic information signals to which the d... | 07/05/1977 |
| 4034177 | Plunger-actuated, lost motion switch with tactile feedback A plunger actuated, electrical switch uses a lost motion mechanism to prevent the switch from making and breaking contact more than once for each plunger depression. The plunger drives a contact element from a rest position to a contact position where ele... | 07/05/1977 |
| 4029192 | Digital circuit for controlling the return speed of a business machine carriage A digital electrical circuit for selectively activating a clutch mechanism for controlling the return speed of a business machine carriage. A carriage speed pulse transducer provides a series of sync pulses with intervals between each sync pulse being a f... | 06/14/1977 |
| 4029426 | Tubular fastening system A tubular fastening system for holding a plurality of members together with a predictable holding force, including a tubular eyelet of ductile but non-work hardening material pressed into a non-circular aperture formed in a rigid support plate. The predic... | 06/14/1977 |
| 4012715 | Adaptive information signal discriminator In a character recognition system, an improved adaptive information signal discriminator for detecting an information signal when it varies over a wide range and/or when the background noise varies over a wide range. The discriminator is able to adaptivel... | 03/15/1977 |
| 4012745 | Phase correction system An improved system for determining the optimal phase time to charge a liquid stream emitted from a jet as it evolves in form from a continuum to a separatuum of droplets wherein the optimal time for achieving the desired level of charge on a given droplet... | 03/15/1977 |
| 4010838 | Spacer bar mechanism An electronic keyboard is provided with a centrally operable elongated spacer bar that affords a smooth response to depression anywhere along its linear spans, a bail preloadably anchored at various points along the keyboard base being pivotally coupled t... | 03/08/1977 |
