INSTALLATION PNEUMATIQUE ANTI-VIBRATION

PNEUMATIC ANTI-VIBRATION MOUNTING

Abrégé anglais

ABSTRACT
A pneumatic anti-vibration mounting with a flat or inverted dish
type top cover for mounting equipment below which is an inflatable
hollow chamber in the approximate form of a toroid. A central
threaded bush attached below the top cover and passing down through
the centre of the hollow chamber passed into a cavity in the base
which is attached to the bottom of the hollow chamber. Secured to
the bottom of the central bush is a sit down bump stop. A captive
version of the mounting has an extended base plate with fixing down
holes. Inflation of the chamber via a valve or connection in the
base or air chamber wall, causes the mounted equipment to rise
thereby forming a very efficient vibration and shock isolator.

Revendications

CLAIMS
1. A pneumatic anti-vibration mounting comprising a flexible,
hollow and inflatable chamber in the approximate form of a
toroid. An equipment supporting top cover with a threaded bush
attached and passing as a push or sliding fit. down through the
inflatable chamber centre hole. A sit down or bump stop is
secured to the bottom of the bush. A free standing base is
attached to the bottom of the inflatable chamber incorporating
an air passage and inflation connection or valve. The bottom of
the inflatable chamber has an area surrounding the central bush
which is free of contact with the base, thereby allowing it to
flex.
2. A pneumatic anti-vibration mounting as claimed in Claim .1.
wherein a circular distance piece is positioned around the
central bush above the inflatable chamberand in contact with the
bottom of the top cover.
3. A pneumatic anti-vibration mounting as claimed in Claim .1. or
.2. wherein the inflation valve or connection is connected
directly into the inflatable chamber wall and not through the
same.
4. A pneumatic anti-vibration mounting as claimed in any preceding
Claim wherein the top cover is in the form of an inverted dish
with a flat top and a downstanding vertical wall at its
periphery, and distanced from the air chamber at all times.

5. A pneumatic anti-vibration mounting as claimed in any preceeding
Claim wherein the downstanding periphery walls distance from the
top centre are varied to form contact with the inflatable
chamber under varying pressures and loads
6. A pneumatic anti-vibration mounting as claimed in Claims 1-3
wherein the top cover is in the form of a fist plate.
7. A pneumatic anti-vibration mounting as claimed in any preceeding
Claim wherein a captive version of the mounting is provided by
extending the central threaded bush down into a deeper base with
a hollow centre. A base plate with securing holes or slots
extending up into the base cavity and above, the sit down or
bump step prevents the top cover and therby the mounted
equipment from moving more than a predetermined amount.
8. A pneumatic anti-vibration mounting as claimed in any preceeding
Claim wherein the hollow chamber if filled or partially filled
by with liquid, gas, cellular or any resilient material or any
combination of them.
9. A pneumatic anti-vibration mounting as claimed in any preceding
Claim wherein the hollow chamber is sealed.
10. A pneumatic anti-vibration mounting substantially so described
herein with reference to figures 1 and ? of the accompanying
drawings.

Description

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