Importance

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Abstract

A fastener driving device including a fastener depth adjusting assembly comprising a rotary adjusting member having an internal threaded section extending along an axis threadedly mounted on one of an upper and lower structures of a work contact assembly so that a rotational movement of the adjusting member with respect to the one structure effects a relative axial movement therebetween. Mounting structure is provided between another of the upper and lower structures and the adjusting member to mount the adjusting member on the another structure so as to be freely rotatable about the axis while being restrained against axial movement with respect thereto. The mounting structure positions the adjusting member so as to present an exterior surface in an accessible exterior position on a frame structure of the device. The exterior surface has a shape facilitating manual rotational movement of the adjusting member by a manual rolling action thereof. A yieldable holding member is mounted on the another structure for linear movement toward and away from the exterior surface of the adjusting member while being restrained against axial movement with respect thereto. The yieldable holding member is spring biased to continuously engage the exterior surface of the adjusting member. The yieldable holding member is constructed and arranged with respect to the exterior surface configuration of the adjusting member to continuously yieldably hold the adjusting member in a selected one of a series of rotational positions against free rotational movement in either direction while allowing manual rotational movements against the spring bias of the yieldable holding member in either direction with generally equal manual effort.

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First Claim