Rectangular ceiling panels for false ceilings

Claim 2

A ceiling panel for constructing a false ceiling that is supported by parallel rails, said panel being an integral unit formed from a single metal plate and including: a rectangular main wall having along its periphery opposed short longitudinal walls and opposed short transverse walls extending between said longitudinal walls at opposite ends thereof, said walls being arranged in a very shallow pan-like configuration, and a plurality of protrusions extending from said walls at the edges thereof remove from said main wall and extending generally parallel to a plane in which said main wall is disposed; a first and a second of said protrusions extending outward in opposite directions from the respective longitudinal walls and being disposed off center with respect to the length of said longitudinal walls; said first and second protrusions constituting swing bearings that include swing bearing surfaces engageable with false ceiling support rails disposed therebelow to permit said panel to swing between a normal position wherein said main wall is in a horizontal false ceiling plane and an open position wherein said panel extends downward from said plane with said main wall being generally vertical; said swing bearing surfaces being disposed in a common line positioned parallel to said transverse walls.

Claim 3

A ceiling panel as set forth in claim 1 in which at least an additional one of said protrusions extends outward from each of said longitudinal walls to rest upon false ceiling support rails disposed therebelow; said additional protrusions being disposed in a common plane containing said first and second protrusions.

Claim 4

A ceiling panel as set forth in claim 1 in which a third and a fourth of said protrusions extends outward in opposite directions from the respective longitudinal walls and are disposed off center with respect to the length of said longitudinal walls; said first and third protrusions extending from one of said longitudinal walls and being disposed on opposite sides of its midpoint; said second and fourth protrusions extending from the other of said longitudinal walls and being disposed on opposite sides of its midpoint; each of said third and fourth protrusions having a swing bearing surface; said swing bearing surfaces of said third and fourth protrusions being disposed in a common line positioned parallel to said transverse walls and facing the swing bearing surfaces of the respective first and second protrusions.

Claim 5

A ceiling panel as set forth in claim 3 in which: said one longitudinal wall being provided with at least an additional one of said protrusions disposed between said first and third protrusions to rest upon false ceiling support rails disposed therebelow; said other longitudinal wall being provided with at least an additional one of said protrusions disposed between said second and fourth protrusions to rest upon false ceiling support rails disposed therebelow.

Claim 6

A ceiling panel as set forth in claim 1 in which: a further one of said protrusions extends from one of said transverse walls and outboard of said main wall to be supported by an adjacent false ceiling panel disposed below said further protrusion; said first and second protrusions being closer to the other of said transverse wall than to said one transverse wall.

Claim 7

A ceiling panel as set forth in claim 4 in which: a further one of said protrusions extends from one of said transverse walls and outboard of said main wall to be supported by an adjacent false ceiling panel disposed below said further protrusion; said first and second protrusions being closer to the other of said transverse wall than to said one transverse wall.

Claim 8

A ceiling, panel as set forth in claim 1 in which at least one of said first and second protrusions includes a hook-like formation that extends downward into a support rail recess when said panel is in said open position to prevent said panel from moving transverse to such support rail.

Claim 9

A ceiling panel as set forth in claim 4 in which at least one of said first and second protrusions includes a hook-like formation that extends downward into a support rail recess when said panel is in said open position to prevent said panel from moving transverse to such support rail.

Claim 10

A ceiling panel as set forth in claim 6 in which at least one of said first and second protrusions includes a hook-like formation that extends downward into a support rail recess when said panel is in said open position to prevent said panel from moving transverse to such support rail.

Claim 11

A false ceiling and hanging means for suspending said false ceiling from a true ceiling positioned thereabove, said hanging means including first and second spaced parallel horizontal support rails, said false ceiling including first and second panels normally positioned with a lateral wall of said first panel adjacent a lateral wall said second panel, each of said panels including: a rectangular main wall having along its periphery opposed short longitudinal walls and opposed short transverse walls extending between said longitudinal walls at opposite ends thereof, said walls being arranged in a very shallow pan-like configuration, and a plurality of protrusions extending from said walls at the edges thereof remove from said main wall and extending generally parallel to a plane in which said main wall is disposed; a first and a second of said protrusions extending outward in opposite directions from the respective longitudinal walls and being disposed off center with respect to the length of said longitudinal walls; said first and second protrusions constituting swing bearings that include swing bearing surfaces engageable with said first and second rails, respectively, to permit said panel to swing between a normal position wherein said main wall is in a horizontal false ceiling plane and an open position wherein said panel extends downward from said plane with said main wall being generally vertical; said swing bearing surfaces being disposed in a common line positioned parallel to said transverse walls; said panels when in said open positions being slideable on said swing bearing surfaces along said rails lengthwise thereof for locations where an unobstructed opening approximately the combined area of said first and second panels is formed in said ceiling.

Claim 12

A false ceiling and hanging means for suspending said false ceiling from a true ceiling positioned thereabove, said hanging means including first and second spaced parallel horizontal support rails, said false ceiling including first and second panels normally positioned with a lateral wall of said first panel adjacent a lateral wall said second panel, each of said panels including: a rectangular main wall having along its periphery opposed short longitudinal walls and opposed short transverse walls extending between said longitudinal walls at opposite ends thereof, said walls being arranged in a very shallow pan-like configuration, and a plurality of protrusions extending from said walls at the edges thereof remove from said main wall and extending generally parallel to a plane in which said main wall is disposed; a first and a second of said protrusions extending outward in opposite directions from the respective longitudinal walls and being disposed off center with respect to the length of said longitudinal walls; said first and second protrusions constituting swing bearings that include swing bearing surfaces engageable with said first and second rails, respectively, to permit said panel to swing between a normal position wherein said main wall is in a horizontal false ceiling plane and an open position wherein said panel extends downward from said plane with said main wall being generally vertical; said swing bearing surfaces being disposed in a common line positioned parallel to said transverse walls; said panels when in said open positions being slideable on said swing bearing surfaces along said rails lengthwise thereof for locations where an unobstructed opening approximately the combined area of said first and second panels is formed in said ceiling.

Claim 13

A false ceiling and hanging means for suspending said false ceiling as set forth in claim 10 in which for each of said panels at least an additional one of said protrusions extends outward from each of said longitudinal walls to rest upon said rails disposed therebelow; said additional protrusions being disposed in a common plane containing said first and second protrusions.

Claim 14

A false ceiling and hanging means for suspending said false ceiling as set forth in claim 10 in which for each of said panels a third and fourth of said protrusions extends outward in opposite directions from the respective longitudinal walls and are disposed off center with respect to the length of said longitudinal walls; said first and third protrusions extending from one of said longitudinal walls and being disposed on opposite sides of its midpoint; said second and fourth protrusions extending from the other of said longitudinal walls and being disposed on opposite sides of its midpoint; each of said third and fourth protrusions having a swing bearing surface; said swing bearing surfaces of said third and fourth protrusions being disposed in a common line positioned parallel to said transverse walls and facing the swing bearing surfaces of the respective first and second protrusions.

Claim 15

A false ceiling and hanging means for suspending said false ceiling as set forth in claim 12 in which for each of said panels: said one longitudinal wall being provided with at least an additional one of said protrusions disposed between said first and third protrusions to rest upon said rails disposed therebelow; said other longitudinal wall being provided with at least an additional one of said protrusions disposed between said second and fourth protrusions to rest upon said rails disposed therebelow.

Claim 16

A false ceiling and means for hanging same as set forth in claim 10 in which for each of said panels: a further one of said protrusions extends from one of said transverse walls and outboard of said main wall to be supported by an adjacent false ceiling panel disposed below said further protrusion; said first and second protrusions being closer to the other of said transverse wall than to said one transverse wall.