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US 6,302,325 B1Granted
Access opening closure device
OwnerThomson Alexanderinventor
Life of this patent
Estimating the term…
Abstract
An access opening closure device is provided for enabling passage of food or medication into a confined spaced without providing direct access from within the confined space to outside of the confined space. The device includes a housing defining a receptacle, an access door and a top cover. The top cover and the access door are independently movable between open and closed positions to provide access to within the receptacle.
Claims15
An access opening closure device comprising:
- a housing defining a receptacle;
- a top cover movably supported on the housing, the top cover being movable from a first position covering a top opening of the housing to a second position uncovering the top opening of the housing;
- an access door movably supported on the housing, the access door being movable from a first position covering a rear opening of the housing to a second position uncovering the rear opening of the housing;
- and
- a bracket assembly secured to the housing, the bracket assembly being configured to mount the rear opening of the housing about an access opening in a door, the bracket assembly including a top, a bottom and a side bracket, each of the brackets being positioned about the rear opening of the housing, wherein the top and bottom brackets each include a concavity formed therein, the concavities together defining a guide track, the access door being slidably supported for movement between its first and second positions on the guide track.
2 more elements
An access opening closure device comprising:
- a housing defining a receptacle;
- a top cover movably supported on the housing, the top cover being movable from a first position covering a top opening of the housing to a second position uncovering the top opening of the housing;
- an access door movably supported on the housing, the access door being movable from a first position covering a rear opening of the housing to a second position uncovering the rear opening of the housing;
- and
- first and second and third locks, the first lock being positioned to retain the top cover in its first position, the second lock being positioned to retain the access door in its first position, and the third lock being positioned to retain the access door in its second position.
2 more elements
An access opening closure device configured to be positioned about an opening on a secure side of a support structure, the access opening closure device comprising:
- a housing having an outer portion and an inner portion, said inner portion defining a fixed receptacle;
- a top cover movably supported on the housing, the top cover being movable from a first position at least partially covering a top opening of the receptacle to a second position at least partially uncovering the top opening of the receptacle;
- an access door movably supported on the housing, the access door being movable from a first position at least partially covering a rear opening of the receptacle to a second position at least partially uncovering the rear opening of the receptacle;
- a first lock operable to retain the access door in its first position;
- a second lock operable to retain the top cover in its first position;
- a third lock, the third lock being operable to retain the access door in its second position;
- wherein the top cover and the access door are positioned to be primarily operable only from a secure side of a support structure on which the access opening closure device is positioned.
4 more elements
An access opening closure device configured to be positioned about an open on a secure side of a support structure, the access opening closure device comprising:
- a housing having an outer portion and an inner portion, said inner portion defining a fixed receptacle having a rear opening;
- a top cover movably supported on the housing, the top cover being movable from a first position at least partially covering a top opening of the receptacle to a second position at least partially uncovering the top opening of the receptacle;
- an access door movably supported on the housing, the access door being movable from a first position at least partially covering the rear opening of the receptacle to a second position at least partial uncovering the rear opening of the receptacle;
- and
- a bracket assembly secured to the housing, the bracket assembly being mounted about the rear opening of the housing;
- wherein the top cover and the access door are positioned to be primarily operable only from the secure side of a support structure on which the access opening closure device is positioned.
3 more elements
Dependencies are inferred from the claim text.