Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1998-10-20
2000-12-19
Noori, Max
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73862381, G01B 716
Patent
active
061614386
ABSTRACT:
An internal entrapment system (10) for a door (12) movable by a repeatable force includes a force generating device (68) for transferring the door (12) between a first and a second position. A trolley arm (34) connected between the force generating device (68) and the door (12) is continually strained during movement of the door (12). A sensor (50) mounted on the trolley arm (34) generates a signal (54) representative of the strain applied to the trolley arm (34). A processor (72) receives the strain signal (54) for comparison to a predetermined threshold, when the strain signal (54) exceeds the predetermined threshold, the processor (72) at least stops the force generating device (68). A potentiometer (74) is coupled to the door (12) for determining a plurality of positional locations of the door (12) between the first and the second positions, wherein the processor (72) correlates the position of the door (12) with the strain signal (54) for use in comparison to the predetermined threshold. A power supply (64) provides electrical power to the force generating device (68), the sensor (50), the processor (72), and the potentiometer (74), and a decoder/amplifier circuit (70), which also receives electrical power from the power supply (64) and receives the strain signal (54) for conversion into a format acceptable for use by the processor (72).
REFERENCES:
patent: 3210067 (1965-10-01), Ferguson et al.
patent: 3247615 (1966-04-01), Kalog
patent: 3470653 (1969-10-01), Kalog
patent: 3608612 (1971-09-01), Pemberton
patent: 3616575 (1971-11-01), Harris
patent: 3728605 (1973-04-01), Purtilo
patent: 3764874 (1973-10-01), Geoffrey
patent: 3764875 (1973-10-01), Harris
patent: 3792644 (1974-02-01), Ferguson et al.
patent: 3813590 (1974-05-01), Ellmore
patent: 3921335 (1975-11-01), Hewitt et al.
patent: 3996697 (1976-12-01), Bailey et al.
patent: 4001969 (1977-01-01), Hoobery
patent: 4018005 (1977-04-01), Harris
patent: 4231191 (1980-11-01), Ellmore
patent: 4311225 (1982-01-01), Tsubaki et al.
patent: 4408146 (1983-10-01), Beckerman
patent: 4625291 (1986-11-01), Hormann
patent: 4638433 (1987-01-01), Schindler
patent: 5218282 (1993-06-01), Duhame
patent: 5278480 (1994-01-01), Murray
patent: 5419010 (1995-05-01), Mullet
patent: 5770934 (1998-06-01), Theile
patent: 5801502 (1998-09-01), Monzen
Mullet Willis J.
Rodriguez Yan
Noori Max
Wayne-Dalton Corp.
LandOfFree
System and related methods for detecting a force profile deviati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and related methods for detecting a force profile deviati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and related methods for detecting a force profile deviati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-262880