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| Number | Title | Issue Date |
| 7735192 | Extended travel window balance An extended travel balance including a channel having a first end and a second end, a bottom pulley connected at the second end of the channel, and a bottom guide connectable at a location between the first end and the bottom pulley, and preferably between the botto... | 06/15/2010 |
| 7735191 | Locking shoe and mounting bracket for curl spring window balance system A curl spring sash shoe cassette improves upon the suggestions of U.S. Pat. Nos. 5,353,548 and 5,463,793 by providing a mounting bracket that holds an uncurled length of the curl spring and is securely mounted on top of the shoe cassette to maintain an assembly of t... | 06/15/2010 |
| 7708322 | Actuator for use in fenestration systems An actuator for use in fenestration systems having a swinging sash or door is characterized by the use of a linear member running continuously from an actuating assembly to a locking pin assembly. The linear member can be a flexible linear member, allowing it to con... | 05/04/2010 |
| 7703175 | Curl spring cover A curl spring mount has a separate cover that can snap fit into the mount to cover and protect the curl springs. A portion of the cover disposed over the vertical space occupied by the curl springs is arranged outside a jamb channel so that the curl springs can occu... | 04/27/2010 |
| 7367162 | System for shoe latching in laterally removable sash A system for supporting a window sash that allows for the removal of the sash from between opposed window jambs. The system supports the window sash through counterbalance shoes supporting sash support arms pivotally attached to the sash. The shoes include hooks whi... | 05/06/2008 |
| 7004515 | Fenestration locking system This fenestration locking system for a swinging sash or door is characterized by the use of a linear member running continuously from an actuating assembly to a locking pin assembly. The linear member can be a flexible linear member, allowing it to convey motion to ... | 02/28/2006 |
| 6948279 | Support system for laterally removable sash A support system for a heavy sash that is laterally removable from between opposed window jambs includes a pair of sash support arms pivotally mounted on each sash stile and counterbalance shoes that engage the support arms to uphold the sash. The support arms, in i... | 09/27/2005 |
| 6565133 | Sweep lock and tilt latch combination A pair of sweep locks and a corresponding pair of tilt latches are combined and mounted together on an upper rail of a lower sash. The tilt latches and sweep locks are then interactively engaged so that locking the sweep locks latches the tilt latches, an... | 05/20/2003 |
| 6523868 | Wind-resistant window sash lock A sweep lock locking the check rails of an upper and lower sash improves window resistance to negative wind force. The lock accomplishes this by a cam with a pair of locking rims that engage cam receiver projections extending upward and downward to lock a... | 02/25/2003 |
| 6513194 | Pivot connection adjustment assembly An adjustment assembly enables lateral adjustment of the position of a pivot connection of a first member relative to a second member in a window assembly having a first member, a second member, and a rotatable pivot-mounting element. The pivot-mounting e... | 02/04/2003 |
| 6478347 | Wind-resistant sweep lock A sweep lock locking the check rails of an upper and lower sash improves window resistance to negative wind force. The lock accomplishes this by a cam with a locking rim that extends both upward and downward to engage cam receiver projections above and be... | 11/12/2002 |
| 6446391 | Casement sash cable actuator A cable actuator for a casement sash includes a cable engager that moves against an opening pull cable and diverts the cable to an elongated path when the sash is closed. When the opening pull cable is tensioned to open the sash, this moves the cable back... | 09/10/2002 |
| 6378169 | Mounting arrangement for constant force spring balance A mount for one or more constant force curl springs uses a mounting block secured within a sash shoe channel to support the underside of a lowermost curl spring with a superposed curl spring mounted to counterrotate against an outer convolution of the low... | 04/30/2002 |
| 6041476 | Inverted block and tackle window balance Pulleys of a block and tackle window balance include hub steps that interact with other components to reduce the introduction of dirt and dust particles into areas vulnerable to wear. The hub steps of some of the pulleys are recesses formed about the axia... | 03/28/2000 |
| 6032417 | Corner locking carrier shoe for tilt sash A tilt sash counterbalance system has a carrier shoe with a locking cam that moves a locking component to a corner-to-corner locking position within a shoe channel. This is done by moving the locking component to a locked position where the locking compon... | 03/07/2000 |
| 5934031 | Jamb liner wind braces for tilt window Wind resistance of a window mounting tilt sash between a pair of jamb liners is increased by braces that attach to frame sides of the jamb liners at the check rail region of the window. The braces have a profile that fits a frame side profile of the jamb ... | 08/10/1999 |
| 5694664 | Coupling for spiral counterbalance A coupling between a twisted rod and a torsion spring of a spiral counterbalance is found to be subject to deformation against the twisted rod from compressive force of the grip of the terminal convolutions of the torsion spring. This problem is solved by... | 12/09/1997 |
| 5615452 | Lift-off guard guide for tilt shoe A guard guide surface for the lift-off slot of a tilt sash shoe is disposed obliquely above the lift-off slot to engage the head of a sash pin rising directly vertically from the slot. This prevents accidental withdrawal of a sash pin from a shoe when the... | 04/01/1997 |
| 5572828 | Pin lock for tilt sash lock shoe A sash pin engaging a locking element of a tilt shoe has a downwardly oriented hook that engages an edge of the locking element when the sash is untilted so that the sash pin cannot be accidentally withdrawn from the shoe. This avoids all the problems tha... | 11/12/1996 |
| 5551189 | Hurricane window brace A hurricane window brace arranges brace elements at upper corners of a tilt sash so that the brace elements extend from a plow region of the sash into inside corners of a shoe channel in a resin jamb supporting the sash. When so positioned, the braces mai... | 09/03/1996 |
| 5546702 | Adjustable brace for window sash A tilt window assembly is modified to include a pair of adjustable braces for controlling wind resistance. Each of the braces includes a bracing block and an adjustable stop. The bracing block fits within a shoe channel in a jamb liner and forms a fixed b... | 08/20/1996 |
| 5530991 | Block and tackle window balance A block and tackle window balance includes an extension spring and two blocks of pulleys mounted within a rigid channel. A spring coupling connects a free end of the extension spring to the first block of pulleys. The pulleys of the first block are sized ... | 07/02/1996 |
| 5463793 | Sash shoe system for curl spring window balance A window balance system for a tilt sash uses a pair of constant force curl springs having curled convolutions carried by sash shoes and free end regions mounted in sash shoe channels above the region of travel of the shoes. The recurl tendency of the spri... | 11/07/1995 |
| 5353548 | Curl spring shoe based window balance system A window balance system for a tilt sash uses a pair of constant force curl springs having curled convolutions carried by sash shoes and free end regions mounted in sash shoe channels above the region of travel of the shoes. The recurl tendency of the spri... | 10/11/1994 |
| 5267416 | Window sash counterbalance with varying lift A multiple spring counterbalance includes a torsion spring and a tension spring for exerting a combined lifting force on a window sash. A spiral rod is threadably engaged with a follower nut for converting a torque applied by the torsion spring into a lif... | 12/07/1993 |
| 5260114 | Thermal transfer printing of window grilles Grille sticks used in the assembly of conventional window grilles are prefinished during their manufacture by a conventional foil transfer printing technique. Preferably, only one side surface of the grille sticks intended to face a window glazing is pref... | 11/09/1993 |
| 5231795 | Lock shoe system for heavy sash A lock shoe system for an especially heavy sash has shoes with lock bolts that can be moved into locking positions by means of a tool that moves a bolt from underneath a shoe so that the bolt interlocks with a lance in the jamb liner. Once the shoes are l... | 08/03/1993 |
| 5226919 | Window grille retainer A window grille retaining system includes a two-piece spring clip assembly. One of the pieces is formed as a pin that is carried within a slot formed in a bottom surface of the grille molding. The other piece is formed as a bracket having a first arm that... | 07/13/1993 |
| 5207025 | Automatic friction shoe A sash platform for an automatic friction shoe connects to the shoe by means of a curved arm that fits into a correspondingly curved recess molded into the shoe body. An abutment limits the insertion of the curved arm into the shoe and holds a sash suppor... | 05/04/1993 |
| 5206973 | Sound-deadener for window torsion balance This invention, which provides a solution to the long-standing problem of motion-related rattle in torsion balances for windows, is based upon the discovery that the major source of the rattle is related to the movement of the free end of the twisted rod ... | 05/04/1993 |
| 5199219 | Window jamb liner A jamb liner for a window assembly permits tilt-takeout sashes to be assembled to form a standard window assembly without tilt or takeout capabilities. The liner has an extruded body with a pair of channels for engaging the sashes. The channels are interc... | 04/06/1993 |
| 5189838 | Tilt sash lock shoe system A counterbalance shoe of a tilt sash lock shoe system runs in a resin shoe channel of a jamb liner and locks against a rib extending into the shoe channel so that the rib is backed up by a surface of the shoe. A locking element carried by the shoe is coun... | 03/02/1993 |
| 5159794 | Jamb liner slot cover An integral strip of resin material is used to cover exposed portions of jamb liner slots of take-out windows. Side walls on either side of the slot are displaced by passage of the tubular body. The winged flanges are drawn partly into the slot against ou... | 11/03/1992 |
| 5152032 | Window sash balance with tension and torsion spring A spring balance for counteracting the weight of heavy window sashes includes both a torsion spring and a tension spring. The two springs are separated by a rigid tube. One end of each spring is connected to an end of the rigid tube. A spiral member engag... | 10/06/1992 |
| 5012554 | Automatic anchoring system for window spring A top clip (20) automatically anchors a window spring (15) at the upper end of a jamb liner spring cover (11) having a generally D-shaped cross section. The top clip has a body (21) that interlocks with the upper coils of spring (15) and has a rounded nos... | 05/07/1991 |
| 4941285 | Lift-off shoe system for tilt window A lift-off shoe system uses non-locking sash support shoes (30) movable vertically and spring biased upwardly in a tilt window. Sash pins (25) have heads (26) that interlock with open top slots (31) in sash shoes (30) so that the sash pins are removable f... | 07/17/1990 |
| 4885871 | Audibly locking shoe system for take-out window A lock shoe system for a take-out window having take-out jamb liners (10) uses a pair of fins (22) extending laterally outward from opposite sides (18) of a sash pin slot (16) in the jamb liner for supporting lock shoes (30) that move vertically in lock s... | 12/12/1989 |
| 4854558 | Sound deadener for window counterbalance spring A window counterbalance spring (10, 30) enclosed within a spring cover (35) or tube (25) is sound deadened against rattling by having its outer surface (16) coated with a hot melt adhesive (11). Hot melt (11) is preferably sprayed on outer surface (16) of... | 08/08/1989 |
| 4837976 | Window balance spring cover friction system An extruded resin spring cover (12) extending for the full length of a resin jamb liner (10) and divided into vertical halves (14) by a longitudinal slit (15) is involved in a friction system that prevents hop or drop of a sash (13) counterbalanced betwee... | 06/13/1989 |
| 4811455 | Window spring anchor A system of anchoring a window balance spring (16) in a channel (20) includes an arched anchor plate (10) connectable to spring (16) and having edge projections (15) that fit between the side walls (21) of the channel. When these and the bottom (22) of th... | 03/14/1989 |
