Abstract: A latch for a tubular door lock employing a cam rotatable by door knob or door lever to retract a bolt extracting plate backward to open the lock which is positioned between two parallel framing plates and adapted to move from anterior position to posterior position with respect to the plates and an exterior box frame enclosing the parallel plates and the cam and supporting the cam for rotation. The external box frame adapted to be moved anteriorly or posteriorly to enable the tubular door lock to be utilized in a 2⅜ or 2¾ setback position.

Abstract: A query comprising of sub queries, each of which could be of different media types are used to search a collection of multimedia documents in a database. These sub queries are parsed according to media type and operators/functions between these sub queries are recorded creating a set of query objects and query operator objects. The query interface than passes the query objects to the appropriate application programming interfaces (API's) of the various search engines. Furthermore, it applies the query object operators to the respective interim results obtained by executing a query object. Then the interim results are combined in a global result object that is processed using a user specification to produce a single combined result list that conforms to user specified requirements.