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Class Information
Number: 49/41
Name: Movable or removable closures > Arcuate closure rotates across arcuate opening
Description: Device comprising a closure having a curved edge surface, and a passage blocking member having an annular opening therein, and wherein said closure moves about an axis concentric with the axis of the opening.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8627601 Rotating radiation shielded entrance assembly Jan. 14, 2014
8429853 Pocket door for a boat Apr. 30, 2013
8398026 Multi-function rotary access door Mar. 19, 2013
8341887 Plantation fan top window shutter Jan. 1, 2013
8322554 Open/close device for pit cover Dec. 4, 2012
8297463 Closure for an equipment sub Oct. 30, 2012
8020603 Blocking element, particularly for a gate used as a checkpoint Sep. 20, 2011
7721782 Arched window covering May. 25, 2010
7682359 High-frequency treatment apparatus Mar. 23, 2010
7413616 Active rinse shield for electrofill chemical bath and method of use Aug. 19, 2008
7249737 Cell door system for aircraft security Jul. 31, 2007
7194841 Dressing room and curtain suspension device Mar. 27, 2007
7148798 Gate closing timer for security gate override system Dec. 12, 2006
7104008 Door system with a pair of door panels connected by a swivel panel that swings back and forth for selectively opening and closing gateways in a compartment Sep. 12, 2006
7021002 Sliding revolving door Apr. 4, 2006
6857956 Airlock system and method for protecting a toxic-free area Feb. 22, 2005
6708448 Drive unit for doors, especially elevator doors having a non-rectilinear profile Mar. 23, 2004
6412220 Upright rotatable arcuate safety gate for a mezzanine loading bay Jul. 2, 2002
6375562 Sliding door Apr. 23, 2002
6260309 Split-sphere observatory dome with a rotating oculus window Jul. 17, 2001
6247272 Curved door assembly for workstation Jun. 19, 2001
6199548 Structure of an oven Mar. 13, 2001
6082352 Oven door hinge Jul. 4, 2000
6073394 Door system Jun. 13, 2000
6000521 Slidable door for a bill inlet Dec. 14, 1999
5992095 Security enclosure for convenience stores and the like Nov. 30, 1999
5577795 Operator cab door of construction machine Nov. 26, 1996
5564774 Operation room of construction machine Oct. 15, 1996
5452547 Dynamic workspace module Sep. 26, 1995
5448860 Prefabricated observatory dome structure Sep. 12, 1995
5282341 Dynamic workspace module Feb. 1, 1994
5209432 Aircraft reverser port door May. 11, 1993
5184422 Swing away manway assembly Feb. 9, 1993
5181018 Access control booth with arcuate doors Jan. 19, 1993
5096253 Cabs of heavy construction vehicles with an openable front window and a locking device therefor Mar. 17, 1992
5052730 Locking means for a gate in an automatic teller machine Oct. 1, 1991
4949651 Locking means for a gate in an automatic teller machine Aug. 21, 1990
4936227 End door for rail car Jun. 26, 1990
4928429 Security vestibule entry for controlled access to banks and the like May. 29, 1990
4889557 Aluminium alloy having an excellent forgiability Dec. 26, 1989
4843761 Arrangement in revolving door assemblies Jul. 4, 1989
4771913 Oven for use in a vending machine Sep. 20, 1988
4669448 Inner door for water heater Jun. 2, 1987
4653520 Dishwasher for large articles Mar. 31, 1987
4603835 Shutter mechanism Aug. 5, 1986
4598495 Security enclosure for a door frame Jul. 8, 1986
4587880 Hatch for a combat vehicle, especially an armored vehicle May. 13, 1986
4581986 Contamination reducing airlock and entry system Apr. 15, 1986
4557073 Revolving doors Dec. 10, 1985
4545630 Cover apparatus for weighing machines Oct. 8, 1985

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