Abstract: A balance assembly (15) is provided for a sash window assembly (10). The sash window assembly (10) has a sash window (12) slidable within a master frame (14). The balance assembly (15) has an elastomer balance member (30) having one end adapted to be connected to the master frame (14) and another end adapted to be connected to the sash window (12) to provide an upward biasing force to the sash window (12). A system (50) is provided for custom-manufacturing the balance member (30) and for custom-manufacturing a sash window assembly (10) incorporating the balance member (30).

Abstract: A muntin clip has a bar support adapted to be connected to a muntin bar end and a base member adapted to be connected to a spacer frame. The bar support has a plurality of flexible support members attached thereto, which are adapted to contact the opposed interior walls of the muntin bar end and deform in response to such contact. The base member has two flexible members forming a flexible latching structure which is adapted to deform when inserted into the spacer frame. The muntin clip to be used with muntin bars and spacer frames having a range of different dimensions and configurations.

Abstract: A muntin clip has a bar support adapted to be connected to a muntin bar end and a base member adapted to be connected to a spacer frame. The bar support has a plurality of flexible support members attached thereto, which are adapted to contact the opposed interior walls of the muntin bar end and deform in response to such contact. The base member has two flexible members forming a flexible latching structure which is adapted to deform when inserted into the spacer frame. The muntin clip to be used with muntin bars and spacer frames having a range of different dimensions and configurations.

Abstract: A tilt-latch (10) for a sash window (12) is disclosed. The tilt-latch (10) has a housing (40) adapted to be supported by a top rail (20) of the sash window (12). The housing (40) has an outward end opening (58) and an aperture (68). A latch bolt (42) is disposed within the housing (40) and has a nose (88) adapted for engaging a respective one of the guide rails (16). The latch bolt (42) has an extended position, an intermediate position and a retracted position. An actuator (44) is connected to the latch bolt (42). The housing (40), the latch bolt (42) and the actuator (44) have cooperative structure such that the actuator (44) is connectable with the latch bolt (42) only when the latch bolt (42) is in the intermediate position.

Abstract: A muntin grid (34) is provided having a plurality of muntin bars (36) joined at intersecting points to form a grid (34). The grid (34) further has a plurality of muntin bar ends (38) located near a periphery of the grid (34), each muntin bar end (38) having a depending tab (39). A muntin clip (40) is provided for receiving the tab (39) wherein the tab attaches the clip (40) to the muntin bar end (38).

Abstract: A muntin clip assembly (40) is provided for connecting a muntin bar (36) having a muntin bar end (38) to a spacer frame (30). The assembly includes a bar support (42) having a tree (46) adapted to be connected to the muntin bar end (38) and a flexible leg (48). The assembly also includes a base member (44) having a slot (56) for receiving the leg (48) and a flexible wing (58) adapted to be connected to the shoulders (35) of the spacer frame (30).

Abstract: The present invention provides a spring balance assembly for use with a sash window assembly slidable within a master frame. The spring balance assembly generally includes a plurality of stacked spring assemblies and pivot brake assembly. The spring assemblies include a coil spring and a support plate that rotatably supports the coil spring. Each coil spring has a free end, an intermediate portion, and a coiled portion, wherein the free ends are operably connected to the pivot brake assembly. The coil springs are configured to prevent a portion of the spring from excessive bowing and making prolonged contact with the wall of the mounting channel to which the balance assembly is affixed. In addition, the coil springs are wound in a manner that significantly reduces the occurrence of severe bowing of the coiled portion and engagement with the channel walls. The spring balance assembly of the present invention reduces contact with the channel walls and thereby reduces any friction and the operating force.

Abstract: The present invention relates to methods and systems of snapshot management of a file system in a data storage system. To represent the snapshots, the invention maintains pointers to the root block pointer of each snapshot. When the active file system is modified, this invention avoids overwriting any blocks used by previous snapshots by allocating new blocks for the modified blocks. When the invention needs to put an established block in a new location, it must update a parent block to point to the new location. The update to the parent block may then require allocating a new block for the new parent block and so forth. Parts of the file system not modified since a snapshot remain in place. The amount of space required to represent snapshots scales with the fraction of the file system that users modify. To maintain snapshot integrity, this invention keeps track of the first and last snapshots that use each block in space map blocks spread throughout the file system data space.

Abstract: A radar antenna for a guided missile is calibrated in flight using a point source of microwave radiation and a lens to emulate a far field source. The microwave source and lens fit behind a metal cap at the leading end of the radome and so do not adversely affect the radar. A variety of techniques to power the point source are disclosed, and a variety of lens arrangements are disclosed. The invention allows a radar antenna to be calibrated in flight, and so insures against mis-calibration due to aging components as well as the heat and mechanical forces associated with storage and/or launch of the missile.

Abstract: Electronic receipts are collected in a database. A buyer can log into the database system and retrieve receipts for the transactions in which he participated. The receipts may have hyperlinks that provide additional functionality.

Abstract: In connection with a sales transaction, an electronic receipt is issued to the buyer that includes hyperlinks. A hyperlink can be associated with post-sale interaction with the product seller, the product manufacturer or parties acting on their behalf that involves the product itself, such as a product return procedure, a product warranty procedure, receiving rebate notices and recall notices, product registration procedures and similar functions.

Abstract: In connection with a sales transaction, an electronic receipt is issued to the buyer that includes hyperlinks. A hyperlink can be associated with an inducement to make a secondary purchase of an item commercially related to the primary purchase, such as accessories, items used in the same field, manuals and other items.

Abstract: Disclosed is an electrokinetic soil decontamination system that uses special electrode wall configurations, treatment wall configurations, and a combination electrode/treatment wall. A special emplacement method for all the flowable wall materials is used and special wall material compositions are disclosed.

Abstract: Disclosed is an electrokinetic soil decontamination system that uses special electrode wall configurations, treatment wall configurations, and a combination electrode/treatment wall. A special emplacement method for all the flowable wall materials is used and special wall material compositions are disclosed.

Abstract: A double walled vacuum cleaner filter having a reusable inner bag with a zippered opening for debris removal.