Back to results
US 4,539,838 AGranted
Variable volume dual action rheometer
OwnerM. Foster Fraleighinventor
Life of this patent
Estimating the term…
Abstract
The invention comprises a device which performs the functions of both a Mooney Viscometer and an Oscillating Disk Rheometer to measure the visco-elastic properties of rubber and rubber-like materials. Rotational and oscillating motion are transmitted to a shaft by means of a sprocket and a hub connected to an eccentric. Rubber samples having a wide range of stiffnesses can be accommodated by a provision for changing the thickness of the sample.
Claims6
A multi-mode elastomeric testing device, comprising:
- a measurement cavity formed at the junction of an upper and a lower platen;
- a rotor disposed in said cavity, having sealment means to said cavity and including a head and shank portion;
- a shaft in mechanical engagement with said shank;
- means for transmitting oscillatory motion to said shaft, including a hub positioned on said shaft and detachably linked to an eccentric via a rod;
- means for transmitting rotational motion to said shaft, including a first sprocket positioned on said shaft and mechanically linked to a second sprocket via a belt;
- and
- a power source connected to both said transmission means and including a torque transducer;
- wherein said hub is keyed to said shaft and said sprocket is received by said hub and rotates freely thereon.
5 more elements
A multi-mode elastomeric testing device, comprising:
- a measurement cavity formed at the junction of an upper and a lower platen;
- a rotor disposed in said cavity, having sealment means to said cavity and including a head and shank portion;
- a shaft in mechanical engagement with said shank;
- means for transmitting oscillatory motion to said shaft;
- means for transmitting rotational motion to said shaft;
- and
- a power source connected to both said transmission means and including a torque transducer.
4 more elements
Dependencies are inferred from the claim text.