Fastener driving tool

Details Fastener driving tool Fastener driving tool

B - Operations, Transporting

25

C

1/12

B25C 1/06 (2006.01)

Patent

CA 1270101

FASTENER DRIVING TOOL Abstract of the Disclosure A fastener driving tool is provided which employs a drive housing subassembly, preferably in the form of opposed cast metal housing sections, which encloses the flywheel and suitable bearings for rotat- ing the same at high speed. This subassembly also supports the associated idler wheel positioned on the other side of the fastener driving ram from the fly- wheel and mounts a toggle mechanism for adjusting the idler wheel from an inoperative position, in which the idler is spaced a substantial distance away from the ram, to an operative position close to the ram in response to movement of the tool into engagement with a workpiece. The drive housing subassembly also pro- vides a top opening recess or well which is adapted to receive and position a removable cartridge which includes the ram and an elastic cord return mechanism, this subassembly also defining a vertically extending slot communicating with said recess which is adapted to receive the vertically positioned ram between the opposed flywheel and idler. A plastic housing is provided to enclose the fastener driving ram and the subassembly with its supported components. However, the plastic housing is connected to the subassembly in such manner that impact forces resulting from engagement of the flywheel with the ram are absorbed primarily by the metal drive housing subassembly and are not transmitted to the -2- plastic housing and components carried thereby. As a result, the plastic housing is used to position the tool at a desired location relative to a workpiece but the impact forces and stresses developed during driving of the fastener are effectively isolated from the plastic housing and its components to provide substantially longer life for the fastener driving tool.

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