Window balance lock and tackle how to#
Window balance lock and tackle pdf#

238000010168 coupling process Methods 0.000 abstract description 8.230000001808 coupling Effects 0.000 abstract description 8.Assignors: THE CALDWELL MANUFACTURING COMPANY Status Expired - Lifetime legal-status Critical Current Links ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: CALDWELL MANUFACTURING COMPANY, THE Anticipated expiration legal-status Critical Assigned to Caldwell Manufacturing Company North America, LLC reassignment Caldwell Manufacturing Company North America, LLC CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNOR NAME PREVIOUSLY RECORDED AT REEL: 026110 FRAME: 0223. Priority to CA002138693A priority patent/CA2138693A1/en Application granted granted Critical Publication of US5530991A publication Critical patent/US5530991A/en Assigned to CALDWELL MANUFACTURING COMPANY OF NORTH AMERICA LLC reassignment CALDWELL MANUFACTURING COMPANY OF NORTH AMERICA LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENORMAND, RICHARD S., MARTINI, JAMES A., WESTFALL, NORMAN R. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Caldwell Manufacturing Co Inc filed Critical Caldwell Manufacturing Co Inc Priority to US08/184,663 priority Critical patent/US5530991A/en Assigned to CALDWELL MANUFACTURING COMPANY reassignment CALDWELL MANUFACTURING COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Caldwell Manufacturing Co Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)Ĭaldwell Manufacturing Company North America LLC Westfall Current Assignee (The listed assignees may be inaccurate.

Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US08/184,663 Inventor Richard S.

Window balance lock and tackle pdf#

Google Patents Block and tackle window balanceĭownload PDF Info Publication number US5530991A US5530991A US08/184,663 US18466394A US5530991A US 5530991 A US5530991 A US 5530991A US 18466394 A US18466394 A US 18466394A US 5530991 A US5530991 A US 5530991A Authority US United States Prior art keywords channel axle pulleys spring extension spring Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5530991A - Block and tackle window balance Browse block and tackle window balances, parts, and accessories. If you need help finding the correct block and tackle window balance, you can contact us, chat with us, or give us a call at 1-80 and we'll help you find your correct replacement block and tackle window balance.US5530991A - Block and tackle window balance

Window balance lock and tackle how to#

Don't forget to check out our blog to learn how to properly measure block and tackle window balances, learn what your balance stamp means, and learn how to install your block and tackle window balance. Block and tackle balances are selected based on the length of the metal channel and the stamp. The pulleys and springs assist with opening and closing the window. In addition, as the cord (or “tackle”) is pulled by the movement of the sash it stretches or compresses the springs, which are weighted to match the sash weight. The pulleys are grouped as the “block” to reduce the load the homeowner feels. Currently one of the most common window balances, block and tackle window balance systems includes a combination of two or more pulleys, a cord, and a spring.