Tensioning tool for a counterbalance system for sectional doors
First Claim
1. A door system comprising, a door movably mounted on a track assembly, a counterbalance system connected to said door and having at least one spring, a tool adapter proximate at least one end of said counterbalance system, a detachable winding assembly adapted to selectively engage and selectively rotate said tool adapter to adjust tensioning of said spring, and a locking assembly interacting with said counterbalance system to maintain a selected tensioning of said counterbalance system upon detaching said winding assembly from said tool adapter.
1 Assignment
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Accused Products
Abstract
A door system (10) including, a door (D) movably mounted on a track assembly (15), a counterbalance system (20) connected to the door and having at least one spring (25), a tool adapter (26) proximate at least one end of the counterbalance system, a detachable winding assembly (30) adapted to selectively engage and selectively rotate the tool adapter to adjust tensioning of the spring, and a locking assembly (36) interacting with the counterbalance system to maintain a selected tensioning of the counterbalance system upon detaching the winding assembly from the tool adapter.
28 Citations
20 Claims
- 1. A door system comprising, a door movably mounted on a track assembly, a counterbalance system connected to said door and having at least one spring, a tool adapter proximate at least one end of said counterbalance system, a detachable winding assembly adapted to selectively engage and selectively rotate said tool adapter to adjust tensioning of said spring, and a locking assembly interacting with said counterbalance system to maintain a selected tensioning of said counterbalance system upon detaching said winding assembly from said tool adapter.
- 10. A detachable tensioning tool in combination with a door system comprising, a door movably mounted on a track assembly, a counterbalance system connected to said door, first and second tool adapters at each end of said counterbalance system connected to first and second springs, a winding assembly including a housing and adapted to selectively engage and selectively rotate either of said first and second tool adapters, and stop surfaces on said housing preventing rotation of said housing during tensioning of said counterbalance system.
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20. A detachable tensioning tool in combination with a door system comprising a door movably mounted on a track assembly, a counterbalance system connected to said door, first and second tool adapters at each end of said counterbalance system connected to first and second springs, a winding assembly including a housing and a coupler adapted to selectively engage and selectively rotate either of said first and second tool adapters, a circumferentially continuous first gear of said coupler having a fixed hub rotatably coupling said winding assembly and said tool adapter, a second gear of said coupler directly engaging said first gear and accessible for having rotation imparted from exteriorly of said housing, a first stop surface on said housing adapted to engage the door frame to prevent rotation of said housing during tensioning of the counterbalance system, wherein said first stop surface is adapted to operate independent of the brackets to prevent rotation of said housing during tensioning of the counterbalance system.
Specification