Contact Us Customer Login Home Products Engineering Solutions Technical Support Industry News About Us About Us / Patents Patents US Patent No's Foreign Patent No's Part # / Series # Constant Force Supports and Chaining 6,393,661 6,584,644 6,412,144 6,848,148 7,076,835 7,552,510 2,361,261 (Canada) 2,369,818 (Canada) 981, 983, 984, 985 series Side Load Extended Travel Block & Tackle Balance 6,598,264 6,877,187 7,155,778 7,353,567 7,669,284 8,042,227 2,376,418 (Canada) 130 series, 135 series, 136 series Inverted Balance T-Lock 6,679,000 6,820,368 6,931,788 7,191,562 8,424,248 9,580,950 2,367,733 (Canada) 706 series, 716 series, 747 series Tru-lock® 8,348,308 8,382,166 8,628,126 200980151399.0 (China) 322506 (Mexico) 3205 Inverted Constant Force RE45,328 8,813,310 9,121,209 974 series, 975 series, 977 series, 978 series Side Load Balance Cord Terminal Clip 6,745,433 2,399,703 (Canada) 100 series, 130 series, 135 series, 136 series, 186 series Gemini Lock 6,264,252 2,214,291 (Canada) 2770-00 2777-84 Class 5 Side Load Attachment 8,296,903 8,448,296 210, 211, 220, 221 series Window Opening Control Device / Window Opening Limit Device 8,813,424 9,428,945 2,757,154 (Canada) 14149, 14150, 14151, 14152, SafeGard WOCD Key Lockable Operator Cover 9,003,706 9,476,241 2014201551 (Australia) 14873, 14874 Casement Window Hinge with Sash Locator 7,735,194 2,546,140 (Canada) Sliding Door Handle Linkage 6,945,572 7,261,330 2890 Sliding Door Handle D572,996 D583,646 Pile Weatherstripping Manufacturing Apparatus and Method 6,974,512 7,419,555 Door Handle Pull and Escutcheon D592,933 D593,395 Operator Assembly 7,464,619 2,459,237 (Canada) Two-Point Lock for Sliding Door 8,376,414 2,628,518 (Canada) 5020148 (Japan) Window Lock Handle and Cover D597,398 129,268 (Canada) Multipoint Lock Mechanism 8,398,126 2,631,923 (Canada) Cover and Handle for Window Lock D780,555 201611574 (Australia) Adjustable Hinge 8,490,246 2,697,880 (Canada) Multi-Point Mortise Lock Mechanism for Swinging Door 9,593,516 2,708,912 (Canada) Positive Action Lock for Sliding Windows 7,676,990 2,579,980 (Canada) Integrated Lock and Tilt-Latch Mechanism for a Sliding Window 7,322,619 2,534,384 (Canada) Integrated Lock and Tilt-Latch Mechanism for a Sliding Window 7,963,577 2,639,711 (Canada) Friction Hinge for Push-Out Style Window 7,900,322 2615614 (Canada) Window Sash Latch D742200 160845 (Canada) Window Lock Handle and Cover D597,398 129,268 (Canada) Passive Door Lock Mechanisms 9,765,550 201380053003.5 (China) Center Release Tilt Latch for Hung Windows 6,817,142 Customer Specific Balance Shoe with pivot retaining fingers 7,210,267 72488 Crescent Handle D678,032 3828, 3629 Adjustable Door Hinge 8,429,794 HG 200, HG 300 Positionable Hinge 8,438,703 NA Nexus Multipoint Sliding Door Lock 8,899,635 Nexus Multipoint Sliding Door Lock Systems Adjustable Lock Point for Lock Tie Bars 9,175,506 Casement Window Operator Handle and Cover D595,111 Multi-Point Sash Lock System for Casement Window 7,452,014 Folding Handle and Operator Cover D591,146 Negative Loading Snubber for Casement Window 8,141,299 Window Operator Cover D649,867 Self Locating Tie Bar guide for Sash Lock Tie Bars 9,217,266 Low Profile High Performance Casement and Awning Window Keeper 9,181,746 Door Handle Pull D592,932 Operator for Moveable Sash 8,601,745 Hardware for a Hinged Light Panel 8,850,744 Recessed Lock Actuating Device for Sliding Doors 9,482,035 Lock with Sliding Door Elements 8,939,474 Multi-Point Lock Having Sequentially-Actuated Locking Elements 9,428,937 Handle D509,420 Sash Rail Lock D569,708 Sash Rail Lock Keeper D583,216 Window Tilt Latch D595,562 Finger-Lift Handle for a Sliding Window D595,564 Integrated Lock and Latch Device for Sliding Windows 9,234,374 FER Locking System for Sliding Windows 9,140,033 9,702,173 Apparatus and Method for Canceling Torsional Forces in a Compound Balance 8,302,258 Window Opening Limit Device and Method of Use 8,950,119 Single Coil Window Balance D464,256 Inverted Constant Force Window Balance for Tilt Sash 9,133,656 Apparatus for Extruding a Low Density Thermoplastic Foam 5,728,406 Projection Window Operator 7,325,359 Low Profile Lock for Windows 9,725,934 Combination Window Sash Lock and Tilt Mechanism 9,719,279 Automatically-Extending Remote Door Lock Bolts 9,637,957 Self-Sealing Butt Hinge 9,617,782 Entry Door Latch Actuator System 9,605,444 Cover and Handle for Window Lock D780555 Opposed Hook Sliding Door Lock 9,790,716 High Security Lock for Door 9,758,997 Sash Lock Actuator 2,322,926 (Canada) Concealed Casement Window Hinge with Roller and Integral Shipping Block 2,715,866 (Canada) Enhanced Performance Tandem Roller for Patio Doors 2,350,051 (Canada) Pick Resistant Sash Lock and Keeper and Method of Locking Sashes 2,242,188 (Canada) Note: We are constantly innovating. Additional US and non-US patents protecting these and other products are pending. Products identified in this table are protected at least by the patent(s) listed, and may be covered by additional patent(s) not specifically identified. We reserve the right to update this information at any time. Home Perspectives Customer Login Replacement Hardware Product Catalog Technical Support Engineering Solutions Manuals & Media Support / FAQ About Us Contact Us Mobile Site © 2021 AmesburyTruth • Sitemap Privacy Policy Terms of Service