1-26. (canceled)
27. A transducer system comprising:
a surface having a plurality of transducers arranged in an N\xd71 matrix or an N\xd7N matrix, where N is an odd prime number; and wherein each transducer is driven by an amplifier and signal time delay means, and wherein each signal time delay means is governed by the relationship Ti,j=(i2+j2) rem N*unit delay.
28. A transducer system as in claim 27, wherein each transducer means is driven by the amplifier and the time delay signal means when they share the same time delay.
29. A manifold system comprising:
a surface having a plurality of manifolds arranged in an array of an N\xd71 matrix or N\xd7N matrix, where N is an odd prime number; and wherein each manifold is driven by a source and signal path extension delay means, each signal path extension delay means is governed by the relationship
Ti,j=i2+j2)rem N*unit delay.
30. A public address system, including the manifold system, as claimed in claim 29.
31. A loudspeaker system having a speaker and a tweeter in which an acoustic driver of correct spectral response placed in time alignment with the acoustic center of a tweeter and wired out of phase, wherein the tweeter has associated with it a reflector having wells arrayed in a quadratic residue sequence such that the energy from the acoustic driver is used to phase cancel the direct radiated energy of the tweeter.
32. A loudspeaker system having a woofer and a tweeter positioned in acoustic centre alignment, wherein the tweeter acts as the source driver for a reflector having wells arrayed in a quadratic residue sequence.
33. A speaker arranged in a cabinet in which panels of the cabinet incorporate lines of weakness or increased strength in the panels that are spaced in a random odd prime number sequence.
34. The speaker as claimed in claim 33, wherein cuts are made in the panels in a random odd prime number sequence.
35. The speaker as claimed in claim 33, wherein struts are made in circular cabinet panels in a random odd prime number sequence.
36. A speaker cone that incorporates lines of weakness or increased strength that are distributed in a random prime number sequence in the cone.
37. The speaker cone as claimed in 36, wherein struts are distributed.
38. An acoustical passive reflector which incorporates a series of wells in its surface to transform an acoustical wave into a series of acoustical waves having a time difference based on a number sequence.
39. The acoustical passive reflector, as claimed in claim 38 in which the number sequence is selected from a Quadratic Residue Sequence, a Barker code, a zero auto-correlation sequence or a complementary sequence.
40. An electronic signal conversion system which converts a signal into a series of signals having a time difference based on a number sequence.
41. The electronic signal conversion system as claimed in claim 40 in which the number sequence is selected from a Quadratic Residue Sequence, a Barker code, a zero auto-correlation sequence or a complementary sequence.
42. An audio speaker system having an N\xd7N array of speakers, where N is an odd prime number, arranged to be driven by the electronic signal conversion system of claim 43 in which the signal is converted into a series of signals centered on the signal with at least one signal being timed to precede the signal and wherein at least one signal to follow the signal and the signal being arranged to be sent to the central speaker in the N\xd7N array.
43. The speaker system as claimed in claim 42, wherein the position of the signal may be moved to a plurality of locations within the array.
44. An acoustic panel arranged in which material incorporates lines of weakness or increased strength in the panels that are spaced in a random odd prime number sequence.
45. The panel as claimed in claim 44, wherein cuts are made in the panel in a random odd prime number sequence.
46. The panel as claimed in claim 44 further comprising a circular enclosure wherein struts are made in a random odd prime number sequence.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A selectively radially expandable fastener device comprising:
a body having a first end and a second end;
at least two first arms pivotably mounted at the first end of the body, the at least two first arms being radially expandable in relation to a longitudinal axis of the body from a first position;
a first wedge washer adapted to pivot the at least two first arms radially outwardly from the first position to a second position;
at least two second arms disposed at the second end of the body, the at least two second arms being radially expandable in relation to the longitudinal axis of the body from the first position; and
a second wedge washer adapted to pivot the at least two second arms radially outwardly from the first position to the second position.
2. The fastener device of claim 1, wherein the first position of the at least two first and second arms permits the fastener to pass through a hole in a body which hole has a smaller diameter than is a diameter of a bore in the body and the second position of the at least two first and second arms at the first and second ends of the fastener body wedges the fastener within the bore in the body and retards movement therein.
3. The fastener device of claim 2, wherein the front wedge washer has a shape defined by a number of ledges, wherein the number of ledges defining the shape of the front wedge washer corresponds to the number of arms disposed on the first end of the fastener body.
4. The fastener device of claim 1 further comprising a first fastener coupled to the first wedge washer for selectively moving same and a second fastener coupled to the second wedge washer for selectively moving same.
5. The fastener device of claim 4, wherein the rear wedge washer has a shape defined by a number of ledges, wherein the number of ledges defining the shape of the rear wedge washer corresponds to the number of arms disposed on the second end of the fastener body.
6. The fastener device of claim 1 further comprising a front torsion member for drawing the front wedge washer toward the first end of the fastener body, the front torsion member being centrally located on the fastener body.
7. The fastener device of claim 1 further comprising a rear torsion member for drawing the rear wedge washer toward the second end of the fastener body.
8. The fastener device of claim 7, further comprising a plurality of rear torsion members, the number of rear torsion members corresponding to the number of arms disposed on the second end of the fastener body.
9. The fastener device of claim 8, wherein the plurality of rear torsion members are disposed circumferentially around the fastener body to define a bolt circle diameter.
10. The fastener device of claim 1, wherein at least some of the first and second arms have a sharp tip.
11. The fastener device of claim 1, wherein at least some of the first and second arms have a blunt tip.
12. The fastener device of claim 1, wherein at least some of the first and second arms are selectively mounted to the fastener body.
13. The fastener device of claim 1, wherein the at least two first arms have a length different than is a length of the at least two second arms to accommodate the fastener is a bore having a tapered diameter.
14. The fastener device of claim 1, wherein the at least two arms of the first and second ends of the fastener body further comprise a base capable of supporting of a compression load.
15. The fastener device of claim 1, wherein the at least two arms of the first and second ends are made from a material different from a material of the fastener body.
16. The fastener device of claim 1, wherein the fastener body houses a sensor for measuring a twist of an associated hollow spindle in which the fastener body is disposed.
17. A removable and selectively radially expandable and contractible fastener device adapted to be installed in a bore comprising:
a body having a first end, a second end, a longitudinal axis and an exterior periphery;
at least two first arms disposed adjacent the first end of the body, the at least two first arms each including a base and a tip;
at least two second arms disposed adjacent the second end of the body, the at least two second arms each including a base and a tip;
wherein the at least two first arms and the at least two second arms are operable to rotate radially outwardly in relation to the longitudinal axis of the body to frictionally engage in a side wall defining the bore, thereby wedging the fastener within the bore.
18. The fastener of claim 17, wherein the body comprises a torque sensor.
19. The faster of claim 17, further comprising a wedge mechanism for rotating the at least two arms of the first and second ends outwardly from their base.
20. A method of securing a fastener device in a bore, the method comprising:
providing a fastener body including a first set of radially expandable arms located adjacent a first end of the fastener body and a second set of radially expandable arms located adjacent a second end of the fastener body, each set of radially expandable arms including a wedge member and a torsional member;
tightening the torsional member of the first set of radially expandable arms, thereby drawing the wedge member toward the fastener body and rotating the first set of radially expandable arms outward from the fastener body until the first set of radially expandable arms frictionally engages a wall surface defining the bore; and
tightening the torsional member of the second set of radially expandable arms, thereby drawing the wedge member toward the fastener body and rotating the second set of radially expandable arms outward from the fastener body until the second set of radially expandable arms frictionally engages the wall surface defining the bore.