COUVERCLE ET DEFLECTEUR AUTOMATIQUE POUR BOUCHE DE CHALEUR

SELF-ACTUATING HOT AIR REGISTER DEFLECTOR AND COVER

Abrégé anglais

This invention relates to the automatic opening and closing of typical forced
hot air
registers deflector and cover.
The usual and common practice of deflecting hot air as it leaves the register
is to place a
separate deflector on the register.
These deflectors are meant to direct the hot air to the center of the room
where it is most
desired.
The current available deflectors do not act as a cover and are inconvenient as
they
protrude above the floor and are therefore in a position to be easily
displaced and
broken.
It is the purpose of this invention to prevent this occurrence by
automatically closing the
deflector almost flat with the floor and at the same time acting as a cover
for the register
preventing such things as dust, dirt, spilled liquids, dropped objects,
insects, etc. from
entering the hot air system.
The heat from the hot air system causes the bimetallic spring to move, (either
expand or
contract), causing the actuating rod to push up the register deflector/cover.
The
bimetallic spring holds the deflector/cover in the fully opened position until
the heat shuts
down thereby causing the spring to rotate in the opposite direction and
lowering the
deflector/cover to the fully closed position.

Description

CA 02224751 1998-O1-23
SpeCIflCRt1U11
This invention employs a typical hot air register ( 1 ) (metal or plastic),
that is normally
placed into a floor to provide a means of controlling hot air driven from a
hot air furnace.
This invention consists of a combination register deflector and cover{2).
The cover is slightly larger than the outside dimensions of any particular hot
air register.
The cover is made of high-density polystyrene plastic and has on its underside
a female
socket (3) with which to attach an "L" shaped actuating rod (4) that raises
and lowers the
deflectorlcover.
The cover is attached to the register by means of a slip on "V" connection (5)
that runs
the length of the cover.
T'he cover opens and closes by means of a hinge arrangement (6).
The actuating device to open and close this cover is by means of a typical
heat activated,
bimetallic, spiral spring (7) similar to those springs employed to open and
close
automatic chokes in automobiles and those employed in a typical manually
operated
household thermostat which turns on and off the furnace.
This bimetallic spring is attached to its plastic base (8) by means of a stud
(9).
The base has a friction fit clamp {10) which attaches to the open/close damper
{11) on the
bottom of the register.
'The actuating rod is "L" shaped and the short end ( 12) of the "L" is
attached to the spring
by inserting it into the closed circle end of the spring(13).
The long end of the "L" shaped actuating rod has a round male end ( 14) that
protrudes
through the center grate of the register (15) and is fitted into the
corresponding female
socket (3) that is located on the underside of the deflectorlcover, in the
center of the
covers length and near its hinged portion.