What is claimed is:
1. A closure for a vial comprising:
a head portion; and
a stem portion which projects from a lower surface of the head portion, said stem portion being inserted in an opening of a vial;
wherein said stem portion is provided with a small diameter portion and a seal portion, in that order from said lower surface the head portion, the diameter of said small diameter portion being smaller than the diameter of the seal portion;
and wherein the entirety of said small diameter portion and said seal portion are substantially uniformly fitted in the opening of the vial.
2. The closure for a vial according to claim 1, wherein the following condition is satisfied:
0.80Dd0.98D;
wherein
d designates the diameter of the small diameter portion; and
D designates the diameter of the seal portion.
3. The closure for a vial according to claim 1, wherein the stem portion is further provided with a leg portion connected to the seal portion, said leg portion being provided with at least one radial opening and a plurality of half-insertion projections formed on the outer peripheral surface of the seal portion, the diameter of the seal portion being smaller than the diameter of a circumscribed circle of the half-insertion projections.
4. The closure for a vial according to claim 1, wherein the following condition is satisfied:
S5jS20;
wherein
j designates the axial length of the small diameter portion; and
S designates the axial length of the seal portion.
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 modular musical performance system, comprising:
a plurality of first modules, each first module including
a plurality of keys;
a plurality of key switches that operate in response to the striking and releasing of the keys,
wherein an arrangement of the keys is such that when connected to another first module the keys of the two modules form a section of a continuous music keyboard;
a switch array bus including address lines and data lines each line being connected to a switch such that each switch is attached between only one data line and one address line and no data line is connected to the same address line via two different switches;
an element that polls the switch array bus and converts switch closing information into coded messages sent to an adjacent module; and
a plurality of second modules, each second module including a component selected from the group consisting of a performance controller, a computer interface, a musical tone generator, a musical accompaniment, a speaker, a performance recorder, an audio amplifier, an audio mixer, an audio processor, and a support extending to the floor, wherein the first and second modules are irremovably connectable to form a single rigid structure.
2. A modular musical performance system, comprising:
a computer interface that exchanges both performance data and digital audio between the system and a computer; and
a plurality of first modules, each first module including
a plurality of keys;
a plurality of key switches that operate in response to the striking and releasing of the keys;
a switch array bus including address lines and data lines each line being connected to a switch such that each switch is attached between only one data line and one address line and no data line is connected to the same address line via two different switches;
an element that polls the switch array bus and converts switch closing information into coded messages sent to an adjacent module;
wherein an arrangement of the keys is such that when connected to another first module the keys of the two modules form a section of a continuous music keyboard, wherein the first modules are irremovably connectable to form a single rigid structure.
3. A modular musical performance system, comprising:
a plurality of physically separable modules that connect to form a single rigid structure;
a means for communication between the modules;
the modules comprising:
a plurality of separate alignment parts that slide into channels extending into each of the modules from the ends that face an adjacent module;
a virtual instruments and effects module that can allow the use of Virtual Studio Technology (VST) plug-ins as part of the musical performance system;
a plurality of keyboard modules each of which is a module comprising:
a plurality of keys along the module’s length;
a plurality of key switches that operate in response to the striking and releasing of the individual keys;
an arrangement of mounting the keys such that when connected to another keyboard module the keys of the two modules form a section of a continuous music keyboard;
a switch array bus including address lines and data lines each line being connected to a switch such that each switch is attached between exactly one data line and one address line and no data line is connected to the same address line via two different switches; and
an active electronic processing element that polls the switch array bus and converts the switch closing information into coded messages sent to an adjacent module using the means for communication.