F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
137/81
F15B 13/00 (2006.01) B60T 13/57 (2006.01)
Patent
CA 2020108
ABSTRACT A plunger (52) having a cylindrical body with a smooth surface (61) thereon which joins an semi-spherical atmospheric seat (62) with a conical surface (60) to define with a section (31) of bore (30) a flow path through which air is communicated from the environment to a rear chamber (20) without the creation of noise. The smooth surface (61) is made of a porous material (51) that absorbs sounds without substantially effecting the the flow of air.
Fecher Douglas A.
Yoder David C.
Alliedsignal Inc.
Fecher Douglas A.
Macrae & Co.
Yoder David C.
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