Piezoelectric buzzer assembly

Claim 2

a resonant cylinder integral with the end wall and extending into the casing, a. the cylindrical side wall and the resonant cylinder defining an annular chamber in the casing surrounding the resonant cylinder, and b. the end wall and cylindrical side wall defining openings communicating with the annular casing chamber, and

Claim 3

A piezoelectric buzzer assembly which comprises acoustic means comprising a vibrator including a piezoelectric element and a vibratile disc integrally connected therewith, a casing having an end wall and a cylindrical side wall, the vibrator being arranged in the casing, an electric oscillation circuit electrically connected to the vibrator, and a horn member disposed about the periphery of the casing and flaring radially outwardly thereof, the buzzer assembly comprising the improvement of combining

Claim 4

A piezoelectric buzzer assembly which comprises acoustic means comprising a vibrator including a piezoelectric element and a vibratile disc integrally connected therewith, a casing having an end wall and a cylindrical side wall, the vibrator being arranged in the casing, an electric oscillation circuit electrically connected to the vibrator, and a horn member disposed about the periphery of the casing and flaring radially outwardly thereof, the buzzer assembly comprising the improvement of combining

Claim 5

The piezoelectric buzzer assembly of claim 1, wherein the casing has another end wall, projecting means is arranged along the periphery of the other end wall, and the horn member has an outer side wall portion radially spaced from the cylindrical side wall of the casing and a second wall portion flaring radially outwardly from the cylindrical casing side wall, the outer side wall portion having a first end frictionally engaging the projecting means for detachably mounting the horn member on the casing and a second end, and the second horn member wall portion having a first end merging with the second end of the outer side wall portion and a second end spaced from the cylindrical casing side wall, the outer side wall portion of the horn member and the cylindrical side wall of the casing defining an annular space therebetween.

Claim 6

the horn member having a diameter reducing from a first end remote from the acoustic means to a second end adjacent thereto, a. the horn member defining an acoustical chamber with the cylindrical side wall and the openings in the side wall communicating with the acoustical chamber.

Claim 7

the horn member having a diameter reducing from a first end remote from the acoustic means to a second end adjacent thereto, a. the horn member defining an acoustical chamber with the cylindrical side wall and the openings in the side wall communicating with the acoustical chamber.

Claim 8

The piezoelectric buzzer assembly of claim 2, further comprising an electrical terminal of the oscillation circuit arranged in the annular space between the outer side wall portion of the horn member and the cylindrical casing side wall.

Claim 9

The piezoelectric buzzer assembly of claim 1, further comprising a wall integral with, and radially extending from, the cylindrical casing side wall, and a threaded connection between the horn member and the cylindrical casing side wall adjacent the radially extending wall.

Claim 10

The piezoelectric buzzer assembly of claim 4, wherein the horn member has an inner cylindrical wall portion threadedly connected to the cylindrical casing side wall, an outer cylindrical wall portion radially spaced from the inner wall portion and having an end remote from the radially extending wall, and a wall portion flaring radially outwardly from the cylindrical casing side wall, the flaring wall portion connecting the remote end of the outer wall portion to the inner wall portion of the horn member.

Claim 11

A piezoelectric buzzer assembly which comprises acoustic means comprising a vibrator including a piezoelectric element and a vibratile disc integrally connected therewith, a casing having an end wall and a cylindrical side wall, the vibrator being arranged in the casing, an electric oscillation circuit electrically connected to the vibrator, and a horn member disposed about the periphery of the casing and flaring radially outwardly thereof, thE buzzer assembly comprising the improvement of the horn member having an inner cylindrical wall portion, an outer cylindrical wall portion radially spaced from the inner wall portion, and a wall portion flaring radially outwardly from the cylindrical casing side wall, the flaring wall portion connecting one end of the outer wall portion to the inner wall portion, and a threaded connection between the inner wall portion of the horn member and the cylindrical casing side wall.

Claim 12

A piezoelectric buzzer assembly which comprises acoustic means comprising a vibrator including a piezoelectric element and a vibratile disc integrally connected therewith, a casing having an end wall and a cylindrical side wall, the vibrator being arranged in the casing, an electric oscillation circuit electrically connected to the vibrator, and a horn member disposed about the periphery of the casing and flaring radially outwardly thereof, thE buzzer assembly comprising the improvement of the horn member having an inner cylindrical wall portion, an outer cylindrical wall portion radially spaced from the inner wall portion, and a wall portion flaring radially outwardly from the cylindrical casing side wall, the flaring wall portion connecting one end of the outer wall portion to the inner wall portion, and a threaded connection between the inner wall portion of the horn member and the cylindrical casing side wall.