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A molded resin integral spring in a latch member is backed up by a prestressed metal flat spring. The flat spring is retained in the latch member by a boss molded into a cavity in a latch button and by a slot in a cantilevered member. The resilient springback of the flat spring backs up the resilien

A molded resin integral spring in a latch member is backed up by a prestressed metal flat spring. The flat spring is retained in the latch member by a boss molded into a cavity in a latch button and by a slot in a cantilevered member. The resilient springback of the flat spring backs up the resilience of the integral spring to provide long-term positive latching.

대표청구항 ▼

A latch member for a telescoping handle comprising: a latching dog; a latch button adapted for manual actuation; an integral hinge connecting said latching dog and said latch button; said latching dog, latch button and integral hinge being integrally formed of a plastic resin; a flat metallic spring

A latch member for a telescoping handle comprising: a latching dog; a latch button adapted for manual actuation; an integral hinge connecting said latching dog and said latch button; said latching dog, latch button and integral hinge being integrally formed of a plastic resin; a flat metallic spring; means in said latch button for abutting a first end of said flat metallic spring; means in said latching dog for abutting a second end of said flat metallic spring; said flat metallic spring being formed to require deformation thereof to fit said first and second ends to their respective abutting members, said deformation placing a resilient prestress on said flat metallic spring; and said resilient prestress being in a direction and having a force and a direction effective for urging rotation of said latching dog and said latch button about said integral hinge toward a latching position of said latching dog.