U.S. patents available from 1976 to present.
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...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."

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Class 74/38 - Crank, lever, toggle, and slide


Subclass of Class 74 - Machine element or mechanism
Definition: Mechanisms, including a crank, lever, toggle, and slide.
No. of patents: 11
Last issue date: 12/11/2007


NumberTitleIssue Date
7305873Method for dynamically determining peak output torque in an electrically variable transmission
A method for determining output torque limits of a powertrain including an electrically variable transmission relies upon a model of the electrically variable transmission. Transmission operating space is defined by combined electric machine torque constraints and e...
12/11/2007
6860198Press having a slide
A press has a slide which can be driven by way of one or more one knee link element by a driving device in order to carry out a stroke movement. The knee link element or elements is or are connected by at least one connection element with another knee link element w...
03/01/2005
6378389Toggle-style overload protection device
An anti-overloading device for use in a restraint-camming apparatus in which the apparatus includes a linear guide for guiding an associated operating member in reciprocating movement and a restraint cam for reciprocating the operating member in its movem...
04/30/2002
5584741Halloween toy
A Halloween toy comprises an image member received within a frame. A mechanism is provided for moving the member into and out of the frame so as to achieve a scary effect. The image member may represent a face and movement of the member may be accompanied...
12/17/1996
5390556Control system for the rectilinear vertical reciprocating movement in a needling machine
Rectilinear vertical reciprocating movement is transmitted to the needle-holder beam of a needling machine by a crank mechanism preferably comprised of two horizontal auxiliary connecting rods hinged to a support of the beam. The two auxiliary connecting ...
02/21/1995
5287728Power transmission device for press machine
A power transmission device for a press machine comprises a connection link connected to a crankshaft of the press machine and reciprocated in accordance with the rotation of the crankshaft, a first slider provided in a frame of the press machine so as to...
02/22/1994
5189922Force impulse generator
A force impulse generator designed for machines with impulse action used for press working of metals, ceramics, cermet and other materials can produce force impulses with high values and large amplitude of displacement of the impulse body with reduced ove...
03/02/1993
4800767Acceleration control device for a hydraulic drive unit
An acceleration control device for a hydraulic drive unit having a rotatable control shaft movable between an on position and an off position. An arm is connected to the control shaft for rotating the shaft between the off and on positions. A motive appar...
01/31/1989
4322864Binding machine for the application of a strip of flexible material around the outline of thin articles, particularly for edging parts for boots and shoes
A binding machine for the application of a strip of flexible material around the outline of thin articles, particularly for edging parts for boots and shoes, comprising a fork with an alternating movement for folding the strip partly above and partly belo...
04/06/1982
4270413Intermittent operation arrangement in a notching machine
An arrangement for an intermittent operation in a notching machine which includes a ram driven by way of a crank or eccentric drive which ram is articulated to a toggle joint. The notching machine has an operating cycle which consists of alternatingly suc...
06/02/1981
4208924Drive for operating a punching tool
A drive for operating a punching tool comprises a toggle-joint lever to one of whose lever members the punching tool is operatively connected. The second lever member of the toggle-joint forms part of a quadrilateral linkage. This linkage consists of the ...
06/24/1980
 
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