[Milsurplus] Does anybody remember a torque amplifier?

[J. Forster]

It is entirely possible to make an all-mechanical torque amplifier or
servo as you suggest:


                                    ==
                                    ==
Input   >========= Differential==============> Output
                        |           ==
                        |           ==
                        |            = Reduction Gears
         MOTOR=====> Ball & Disk =====
                                     =

However, ANY servo requires an externsal power spource.

-John

============




> On Fri, 21 May 2010, J. Forster wrote:
>
>> That's nothing but a common position servo.
>>
>> Any reduction gearbox if a "torque amplifier". However, the price for
>> amplifying the torque is reduced angular travel.
>>
>> Output Torque x Output Angle < Input Torque x Input Angle
>>
> Yes, but the device I remember is not a common gear box, but a true
> torque amplifier.  The motor mounted on the unit supplies the power.
> Input angle = output angle with a lot more torque.  And I believe it's
> all mechanical, but might have involved slipping clutches or something.
> I didn't see the interior.  Guess I need to go look at some ancient
> mechanical engineering text books.