Posture

06/29/2014

 
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How bad sitting posture at work leads to bad standing posture all the time: on.wsj.com/1rtXNJy

 
 
 
 
 

Lemon Laws

06/18/2014

 
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Lemon Laws

These vehicles and other goods are called “lemons.” The federal lemon law (the Magnuson–Moss Warranty Act) was enacted in 1975 and protects citizens of all states. State lemon laws vary by state and may not necessarily cover used or leased cars, and other goods. The rights afforded to consumers by lemon laws may exceed the warranties expressed in purchase contracts. Lemon law is the common nickname for these laws, but each state has different names for the laws and acts.

Federal lemon laws cover anything mechanical. The federal lemon law also provides that the warranter may be obligated to pay the prevailing party’s attorney in a successful lemon law suit, as do most state lemon laws. - http://en.wikipedia.org/wiki/Lemon_law


 
 
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Rescue crews on Tuesday afternoon responded to a construction site in west suburban Elmhurst Illinois for a report of a person pinned under a truck.

Police and fire were called to the 400 block of South Spring Road Elmhurst IL.

The 39-year-old was airlifted to Good Samaritan Hospital in Downers Grove.

"The patient was conscious and alert" at the time of transport, according to a statement released by the City of Elmhurst.


Source: http://www.nbcchicago.com/news/local/elmhurst-illinois-crash-263506161.html#ixzz34vIoIaiV 


 
 
 
 
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Electromagnetic clutches need to be adjusted

People use electromagnetic (EM) clutches and brakes every day and often don’t realize it. Anyone who switches on a lawn tractor, copy machine, or car air conditioner may be using an EM clutch — and EM brakes are just as common.

Electromagnetic clutches operate electrically but transmit torque mechanically. Engineers once referred to them as electromechanical clutches. Over the years EM came to stand for electromagnetic, referring to the way the units actuate, but their basic operation has not changed.

Electromagnetic clutches and brakes come in many forms, including tooth, multiple disc, hysteresis, and magnetic particle. However, the most widely used version is the single-face design.

Both EM clutches and brakes share basic structural components: a coil in a shell, also referred to as a field, a hub, and an armature. A clutch also has a rotor, which connects to the moving part of the machine, such as a driveshaft.


 
 
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Identify the type you need 

An electric trailer brake controller is an electrical unit that supplies power from the tow vehicle to the trailer's electric brakes. Many styles are available. They differ from how they look to the number of brakes they can power, but all of them can be divided up into two main groups, Proportional or Time Delayed.

Proportional Brake Controller

With proportional brake controllers, once the brake pedal is stepped on, there is a motion-sensing device that senses how fast the tow vehicle is actually stopping.  the controller then applies power to the trailer brakes equally. This allows the trailer to stop at the same rate as the tow vehicle.

This type of brake controller provides the smoothest and quickest braking while also providing the least amount of wear on both the vehicle's, and trailer's brakes.  Proportional controllers are energized by the brake pedal switch and activated by a pendulum circuit that senses the vehicle's stopping motion and applies a proportional voltage to the trailer's brakes.  When properly adjusted, the trailer will decelerate at the same rate as the tow vehicle, increasing braking efficiency and reducing brake wear. the controller may have to be adjusted based on the trailer weight, and payload. Proportional brake controllers provide an additional level of safety because they will automatically adjust to full power if the tow vehicle makes an emergency stop.

Time Delayed Brake Controller

With Time Delayed trailer brake controllers, once the brake pedal is stepped on, the pre-determined amount of power (which is set by the user, based on trailer weight) is sent back to the trailer brakes. On time-delayed controllers, a delay always exists from when the brake pedal is pushed to when the unit reaches the user-set, maximum power output.  The delay can be shortened or lengthened with the sync switch, available on most time-delayed controllers, but it behaves the same way for every stop (slow or fast).  If the sync switch is set too low, the vehicle will do most of the initial braking, putting extra strain on the vehicle's brakes. If the sync switch is set too high, the trailer will be braking harder.  So in most cases, either the truck or the trailer will be doing the majority of the braking, resulting in the possibility of uneven brake wear.  A time delayed controller will typically be less expensive,