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...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...

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Class 172/500 - Tool spring pressed downwardly


Subclass of Class 172 - Earth working
Definition: Apparatus in which the bias of the resilient means acts
No. of patents: 25
Last issue date: 02/20/2007


NumberTitleIssue Date
7178605Agricultural toolbar float system
A ground engaging agricultural toolbar for accommodating uneven terrain. The toolbar is provided with a plurality of long arms with multiple articulations, actuated and controlled by hydraulic cylinders. The hydraulic cylinders may be actuated to fold the toolbar fo...
02/20/2007
7073616Controller for hybrid vehicle
A controller for a hybrid vehicle includes a slip controller which controls a lockup mechanism to slip in a set driving range, and an assist limiter which restricts assist of the motor generator in the range where slip occurs. ...
07/11/2006
6678959Grout removal tool
A grout removal tool includes an adapter having a replaceable cutting blade mounted thereon. The adapter is configured to be installed within a common reciprocating saw. The adapter has a proximal attachment end for attachment to the saw, an elongated pro...
01/20/2004
6505688Soil conditioning implement
A seed bed packer including a frame, a plurality of wheels connected to the frame, and a soil packing element. The packer also includes a spring shank for transferring weight from the frame to the soil packing element. The spring shank includes a first le...
01/14/2003
6371216Tillage implement with spring pressure weight transfer mechanism
A forwardly folding tillage implement carries a number of ground engaging tools on a tool gang frame disposed to the rear of a carrier frame. A rockshaft is disposed between the carrier frame and the tool gang frame and is movable between four rotated pos...
04/16/2002
6250398Spring trip standard
A spring trip standard for a tillage implement includes a coil spring freely and solely compressed between an upper spring-abutting surface on the mounting bracket and a lower spring-abutting surface on a casting which is connected by a transverse pivot t...
06/26/2001
5727638Down pressure system with free float extension
An opener for use in varying ground conditions, ranging from no-till to conventional full tillage conditions, includes an adjustable down pressure control and a down pressure spring and tension link assembly which selectively provide a limited free float ...
03/17/1998
5285856Mechanical suspension device for piler of sugar cane loaders
A sugar cane piler having a mechanical spring suspension device connected between the piler and the front end of the loader, the device including a precompressed spring to absorb a major portion of the weight of the piler and reduce the force of the piler...
02/15/1994
5181573Seed bed packer implement
A drawbar packer having an adjustable bias assembly which transfers implement weight between the wheels and the coil packers. Tension on extension springs is adjustable so that sufficient weight is transferred from the wheels to the coil packers such that...
01/26/1993
5163518Down force adjustment and lift for an opener supported from a frame by lift arms
A plurality of parallel arm type openers are mounted on a frame tube, and a rockshaft is supported directly below the tube. Adjacent each of the openers, a lever arm is fixed for rotation with the rockshaft and, upon rotation of the rockshaft in a first d...
11/17/1992
5007485Earth crust breaker
An earth crust breaker drawn by a tool bar on a tractor is provided and consists of an elongated U-shaped frame having an angularly upwardly extending front end attached to the bottom of a vertical member of the tool bar. A post extends vertically from ea...
04/16/1991
4883127Sprayer marker
A field marker for attachment to a sprayer boom has an outer square tube clamped to the end of the spray boom. An inner square tube slides in the outer tube and is connected to it by a pair of coil springs that bias the inner tube downwardly. An hydraulic...
11/28/1989
4724910Implement with resiliently mounted coulter gangs
An agricultural implement is equipped with a plurality of earthworking tools spaced from one another in the fore and aft direction. One of the tools is adjustable between working and nonworking positions on a main frame by a hydraulic actuator connected t...
02/16/1988
4721048Trash seeder
The invention is directed to a trash seeder having a seeding tyne and a following press wheel. A hydraulic cylinder applies pressure to both the seeding tyne and the press wheel. The press wheel is pivoted to the frame by a trailing arm and the tyne is pi...
01/26/1988
4700785Furrow opener assembly with integral down-pressure adjustment
A shank assembly including a rearwardly opening bracket pivotally mounting a shank. A tension link extends upwardly from a central portion of the shank and through an apertured strap. A stop member at the upper end of the link limits the downward rocking ...
10/20/1987
4660651Highly flexible, foldable drill for uniform depth seed deposit
In a drill, there is provided the combination of a pair of foldable pivot frames to each of which is attached a wheeled wing frame for up and down swinging movement, together with a tongue assembly for effecting the folding action, as well as a subframe f...
04/28/1987
4546832Agricultural implement with spring cushion for vertically adjustable subframe
An agricultural implement has a main pull-type frame carrying a first set of ground-engaging tillage tools and a subframe carrying a second set of tillage tools. A lift mechanism including an hydraulic cylinder operated from the operator's position on the...
10/15/1985
4448259Rubber spring for furrow opener
A pre-stressed columnar rubber spring interposed between the pressure beam and pivoted draw bar tube of a no-till seed drill deflects under load in one direction only and the force causing increased spring deflection in the principle operational range inc...
05/15/1984
4210210Quick mounting mechanism for agricultural implement
A mechanism for quickly and independently mounting detachable soil engaging tools on mobile agriculture equipment includes a vertically extending frame member and a pivotal tool support member. The frame member and tool support member have a tool mounted ...
07/01/1980
4192388Wheel rut closing device for irrigation system
A wheel rut closing device for use in combination with an irrigation system having an irrigation line support or supports, each support having rotatably mounted thereon a wheel or wheels. The wheel rut closing device is mounted on each irrigation line sup...
03/11/1980
4191262Agriculture light tillage implement and tool mounting mechanism therefor
A light soil tillage implement is adapted to be drawn by a farm tractor, and is designed to perform a light tillage immediately preceeding fertilizing, planting, and/or other farming operations. The implement comprises a frame having support wheels thereo...
03/04/1980
4131162Earth working apparatus
An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends...
12/26/1978
4116140Press wheel depth control for grain drill furrow openers
A depth control for grain drills, planters or the like utilizing a press wheel which can be adjusted to control the depth of each individual furrow opener to insure uniform depth of planting across the width of wide machines presently in use....
09/26/1978
4083412Agricultural soil-working apparatus
An agricultural seed-drill comprises a frame and pivotally mounted drag bar carrying a coulter disc. An ovoid rubber spring is located between the drag bar and a member, such as a moving beam or bell crank lever, associated with the frame to apply pressur...
04/11/1978
4077478Down pressure control mechanism for grain drills
A down pressure control for use with furrow openers in grain drills which provides a spring load for maintaining down pressure on the furrow opener during normal operating conditions and which can be at relatively high rate to permit minimum tillage, or w...
03/07/1978
 
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