Sealing means for wind instruments

Details Sealing means for wind instruments Sealing means for wind instruments

1975-05-29

1976-05-25

Gonzales, John F.

Music

Instruments

Wind

84385P, G10D 700

Patent

active

039584844

ABSTRACT:
Improvement in sealing means for wind instruments wherein pads are mounted on the cups of keys which are actuated to open one or more tone holes on such instruments which holes are normally closed by the pads. The improvement resides in the pads being comprised of a first layer of a relatively soft, closed-cell, cross-linked polyethylene foam material which is adapted to enter the tone hole of such instruments and seal it off from the atmosphere thus preventing air leaks through such holes and a second layer, bonded to the first layer, of a greater rigidity than the first layer, of a closed-cell polyethylene foam material which is adapted to be secured to the key cup thus forming a pad having a long life and one which is unaffected by moisture.

REFERENCES:
patent: 2534660 (1950-12-01), Collis
patent: 2540760 (1951-02-01), Schoemann
patent: 2957381 (1960-10-01), Hillyard
patent: 3608416 (1971-09-01), Nagao
patent: 3767506 (1973-10-01), Kawakami

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