G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 11/00 (2006.01) G01N 11/16 (2006.01) G01N 33/44 (2006.01)
Patent
CA 2067034
The invention elates to an instrument for measuring the viscoelastic properties of rubber and like materials comprising two opposed dies,(11) and (12), each die having a die housing (13), (14), the dies and housings being moveable between an open position and a closed position, and wherein: a) each die is separated from its housing by a substantially uniform circumferential gap (20, (21) such that the die is rotatable relative to its housing, and one die is rotatable relative to the other, b) in the closed position, the two dies define between them a cavity (15) for holding under pressure a sample of material to be tested, (c) the design of the dies and housings is such that during movement from the open position to the closed position, a sample of test material located between the dies (11), (12) is compressed so that excess material is extruded radially from between the dies, across the gap (20), (21) between 15 each die and its housing and through a narrowing space (16) separating the housings until the two housings (13), (14) reach their closed position, in which position the said space (16) is sealed. In prior art instruments, at least one annular seal (5) of heat-resistant elastomeric material is positioned between each die (1), (2) and its housing (3), (4) to ensure that a sample of material in the die cavity (6) is maintained under pressure during a test. In the instrument of the present invention, no such seal is required. The radial dimension of the gap (20), (21) between each die and its housing is significantly less than in prior art instruments, and sheets of film (18), (19) of heat and distortion-resistant material are used to bridge the gaps (20), (21).
Mathews Michael
Rusling David Goeffrey
Stolc Michael John
Mcfadden Fincham
Monsanto P.l.c.
Solutia Uk Plc
LandOfFree
Instrument and method for viscoelasticity measurements does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Instrument and method for viscoelasticity measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instrument and method for viscoelasticity measurements will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1663560