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Patents Published on 07/21/1981


See All Patents Issued In 1981


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NumberTitleIssue Date
4279157Method of and device for determining the internal structure of a body by means of acoustic beams
A method and device for determining the internal structure of a body by means of acoustic beams. Transit times and intensities of acoustic beams passing through the body in different spatial directions are measured to establish the refractive index distri...
07/21/1981
4279158Ultrasonic flaw detector driving apparatus
A ultrasonic flaw detector driving apparatus including a driving apparatus which is equipped with an arm mounted respective side faces of a main frame of the ultrasonic flaw detector driving apparatus so as to allow the arms to move into an open and close...
07/21/1981
4279159Vibrometer
A vibrometer comprising a reed unit adjustably clamped in position within a case. The reed unit includes three vibratory reed portions projecting from a base. Each of the reeds will vibrate at its natural frequency in response to vibration at a preselecte...
07/21/1981
4279160Pressure measuring apparatus with temperature compensating means
A pressure measuring apparatus using process transmission media and comprising measuring and compensation systems. These systems have the substantially same construction which comprises a pressure receiving portion, a pressure transmitting portion and a p...
07/21/1981
4279161Gauge
A pressure gauge is disclosed which is generally suitable for use in connection with a fire extinguisher. The pressure responsive element is rotatably secured in position in the casing by an adjustable sleeve. The zero reference dial mark is provided on t...
07/21/1981
4279162Pressure transducer
A hydraulic pressure transducer comprises a cylindrical housing having a plurality of circumferential inwardly and outwardly directed ribs which axially position and retain coaxially aligned operative components within the transducer. These components inc...
07/21/1981
4279163Stress measuring apparatus
A residual stress measuring apparatus for sensing a magnetic state of an object to measure a residual stress of the object comprises a magnetic sensor for sensing a magnetic state of the object to provide its state in the form of current and voltage, an A...
07/21/1981
4279164Metallurgical specimen tester
A plurality of cantilever beams, each fitted with a calibrated strain gage, are arranged to pivot on a corresponding plurality of upstanding pivots located near one end of each beam of a steel plate. A cylindrical specimen threaded at each end is disposed...
07/21/1981
4279165Apparatus for measuring cohesion force of particulate materials
An apparatus for measuring the cohesion force of a particulate material. The apparatus comprises a bottomed container composed of a fixed container segment and a movable container segment for containing the particulate material, a driving device for movin...
07/21/1981
4279166Field replaceable electrode assembly for magnetic flowmeter
A field replaceable electrode assembly for a magnetic flowmeter or the like in which an electrode may be readily installed in and sealed relative to a fitting provided on a meter body from the exterior of the meter body. The electrode assembly of the pres...
07/21/1981
4279167Liquid coupling for doppler sonic flowmeter
A coupling device for attachment of a sonic doppler flowmeter to pipes or conduits is shown and described. In this coupling, a temperature compensated liquid wedge is used to couple the transducer to the wall of the pipe or conduit, and means are shown an...
07/21/1981
4279168Mass rate of flow meter with electromagnetic interference compensation
A mass rate of flow meter including an unrestrained rotor and a restrained turbine and including a magnetic coupling for generating signals in a sensing coil when a predetermined point on the rotor passes a predetermined point on the turbine. A sensing me...
07/21/1981
4279169Timer latch mechanisms
A timer latch mechanism is provided having a timer mechanism which releases a gate structure by moving a linkage tied to arms so that the arms pivot intermediate their length to move pawls on one end away from the gate....
07/21/1981
4279170Pushbutton tuner
The pushbutton tuner comprises a plurality of pushbutton assemblies arranged side by side and parallel to each other. Each pushbutton assembly is movable in its longitudinal direction towards and away from a control bar slidably arranged transversely with...
07/21/1981
4279171Torque applicator
A double-acting piston and a rotatable torque applicator stem are mounted in a torque applicator housing such that the stem is actuated by the double-acting piston. A coupling member is non-movably mounted on the stem and another coupling member is mounte...
07/21/1981
4279172Derailleur for a bicycle
A derailleur for a bicycle comprising four members: a stationary member, first and second linkage members and a movable member. They are arranged in the form of a pantograph mechanism. Associatd with this mechanism is a pivotal member and a spring means w...
07/21/1981
4279173Backlash free adjusting mechanism
A zero clearance, backlash free, adjusting mechanism wherein a multithreaded helical member is constrained against movement within a movable support by means of oppositely disposed concentric threaded members separated by a concentric torsion spring. Oppo...
07/21/1981
4279174Single lever 10-speed bicycle shifter
The shift mechanism is incorporated into the handlebar stem which goes into the front fork stem....
07/21/1981
4279175Adjustment for shift fork on a shift rail of a transmission
A selectively adjustable means for positioning a shift fork on a shift rail. The adjustable means correlates the shift fork with a shift lever position and assures full engagement of the clutch teeth when the lever is shifted. Positive detent mechanism wi...
07/21/1981
4279176Locking device for a tilt steering wheel
A locking device for a tilt steering wheel in which a first bracket is mounted on an end of a steering column secured on a vehicle body, a second bracket rotatably supporting a steering wheel shaft is pivotally connected to the first bracket and a wheel d...
07/21/1981
4279177Variable speed transmission
An internal gear assembly comprising an internal gear and a pinion in mesh therewith is connected to either of a transmission input shaft and output shaft. A first sun gear fixedly mounted on the other of the input and output shafts meshes with a planet g...
07/21/1981
4279178Overdrive gear arrangement
A power transfer case for a four wheel drive land cruiser is altered to provide overdrive capability. A main drive gear is journaled for rotation about a main drive shaft driven by the vehicle transmission system. The main drive gear includes an axially e...
07/21/1981
4279179Ignition system control
An ignition system control for garden tractors is disclosed which includes a single control switch actuator interconnected with independently movable mower drive and transmission drive control linkages. The tractor engine will start only if both drive con...
07/21/1981
4279180Multi-spindle lathes
A multi-spindle machine tool has a frame, a work spindle carrier and its rotatable work spindles indexably mounted on the frame, and a main drive shaft provided with a main brake and a main clutch. A plurality of clutches and selectively actuable to place...
07/21/1981
4279181Tool control head for pipe and tubing cutting machine
A machine for performing cutting, roll-grooving and like operations on pipe or tubing. A pneumatically operated head assembly provides for rapid tool advancement to a first predetermined position short of work engagement and hydraulically cushioned advanc...
07/21/1981
4279182Machine tool
A machine tool for machining a blank, such as round bar, comprising an electric motor which includes a motor housing having an axial bore through which the blank can extend, an annular stator arranged in said motor housing, and an annular rotor arranged i...
07/21/1981
4279183Rotary heat cutter for plastic webs
The rotary heat cutter comprises a heating element adapted to be rotated into engagement with a taut section of plastic web to sever the web transversely while the web is traveling in a straight path. Means are provided for constraining the heating elemen...
07/21/1981
4279184Apparatus for processing longitudinally-moving webs of material
At least three crosscutters for a web of corrugated board include a first crosscutter for the original width of the web and second and third crosscutters for crosscutting slit subwebs having reduced widths as compared to the original web width. A module f...
07/21/1981
4279185Electronic music sampling techniques
The disclosure describes improved apparatus for sampling a digitally-stored waveshape only at a rate 2N times the fundamental frequency of a note synthesized, where N is an integer. The apparatus includes a digital memory for storing a digital ...
07/21/1981
4279186Polyphonic synthesizer of periodic signals using digital techniques
The invention concerns a polyphonic musical synthesizer using digital techniques. The generation of successive wave form patterns makes use of phase data for addressing a wave form memory, and of amplitude and harmonic or octave row data contained in a se...
07/21/1981
4279187Digital arpeggio system for electronic musical instrument
An arpeggio system, utilizing bipolar digital logic devices in all control and sequencing functions, generates a variety of arpeggio and strum note patterns. A key operated switch enables a NOR logic note gate, or a series of octavely related note gates, ...
07/21/1981
4279188Acoustic coupling free electric drum
Faithful replication of a drummer's hits on an electric drum, free of cogeneration of spurious signals by acoustic coupling of the drum pick-up with extraneous energy sources such as nearby musical instruments is achieved by employing as the drum hit pick...
07/21/1981
4279189Bass drum spur and stabilizer assembly
A spur and stabilizer assembly for a bass drum. The assembly comprises a pair of tubular stabilizer elements with their upper ends mounted substantially adjacent each other to the inside surface of the bass drum shell. The tubular stabilizer elements exte...
07/21/1981
4279190Break away nail
A nail having a shank and head including one or more spaced grooves formed in the shank about its periphery, such that the nail can be fractured. The groove may comprise any one of several configurations, e.g. rectangular, V-shaped, concave, etc. in cross-sect...
07/21/1981
4279191Firearms
An arrangement in firearms having a barrel and a bolt. The bolt is provided with means mounting the bolt for axial displacement and rotation on the outside of the barrel. A carrier displaceably mounted on the outside of the barrel is operatively connected to t...
07/21/1981
4279192Electronic compensator for a pneumatic servo controlled load bearing bellows system
An electronic compensation circuit for a pneumatic load bearing bellows system closed on position, in which a servo valve provides pressure to the bellows to actuate the top of the bellows to move to a predetermined position in response to a control signa...
07/21/1981
4279193Tandem type power servo booster
A tandem type power servo booster including a housing having front and rear shells with front and rear pistons within the housing. The rear piston is coupled to a valve and an inner cylindrical member extends from the valve with the front piston secured t...
07/21/1981
4279194Hydrostatic unit with axial pistons having a variable stroke volume
Hydrostatic unit is disclosed of the kind having axial pistons and a variable stroke volume, in which a distributor body is rotatable about an axis inclined relative to the axis of a driving shaft and rotatably carries a cylinder block so that the axis of...
07/21/1981
4279195Collapsible launching system
A fluid pressure actuated launching system for aircraft or other articles having a piston assembly with an exterior portion that engages the aircraft or article to be launched and an interior portion disposed within and adapted to move within a plurality ...
07/21/1981
4279196Paint spray booth with silencer means
The invention provides a paint spray booth of the kind having an enclosed chamber defining a working area with a perforate working floor. A sub-floor located beneath the working floor has an opening, or a series of openings, through which air from the wor...
07/21/1981
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