Patent attributes
A pneumatically operated rivet squeezer is described, having features that allow for the miniaturization of a squeezer to a size smaller than portable rivet squeezers presently available. A first feature of the invention is that a return spring is accommodated within the squeezer housing by embedding the spring diametrically partially within a cavity in an internal wall of the housing and diametrically partially within a cavity in a jaw of the squeezer. A second feature of the invention contributing to miniaturization is that the squeezer utilizes a wedge having a very high mechanical advantage during the final stage of squeezing action, and a novel two curve surface for applying force to arms of the squeezer. A third feature of the invention contributing to miniaturization is that the squeezer utilizes a novel threading system for attachment of an air inlet piece to the squeezer housing, thereby eliminating the requirement for an O-ring to seal the attachment to the housing and achieving yet a further size reduction.
