Ratchet tap wrench
OwnerNeil M. Abbottinventor
Life of this patent
Estimating the term…
Abstract
A compact tap wrench includes a ring-base, a pair of diametrically opposed handles, and a chuck mechanism friction-fit into the ring-base. A ratchet mechanism is built into one of the handles. The chuck mechanism includes interchangeable jaws for accommodating different ranges of tap sizes.
Claims17
A compact, balanced, hand-held ratchet wrench capable of being held and operated with a single hand, the wrench comprising a ring base, a pair of diametrically opposed handles mounted to the base, a rotatable driven member carried within the base, and a ratchet mechanism means built into one of the handles for forming a ratcheting connection with the rotatable driven member selectively in either of two directions, the wrench being sized and shaped to permit both handles to be grasped and the ring base turned with a single hand and the ratchet mechanism means being sized and shaped to be operated with the hand holding the wrench without removing the hand's grip on the wrench, the ratchet mechanism means including an axial bore in one handle, a spring-loaded pawl in the bore, the pawl having a clutch face engaging the driven member, a locking pin extending through a transverse slot in the handle, and a collar rotatably mounted on the handle for turning the pawl through the locking pin, the collar rotating the pawl to positions for reversing the direction of ratcheting and for locking the chuck with respect to the base.
A compact hand tap wrench for manually cutting threads on the inner surface of a hole, the wrench comprising
- a ring base,
- at least one handle on the base for manually turning the base,
- a driven member carried by the base for rotation with respect to the base, and
- a ratchet mechanism for converting oscillating movement of the base to rotational movement of the driven member,
- the driven member comprising
- a generally cylindrical body having an axis of rotation,
- a toothed portion at an upper end of the cylindrical body, the toothed portion forming a part of the ratchet mechanism, and
- a chuck at a lower end of the cylindrical body, the chuck including an externally threaded portion on the lower end of the cylindrical body, a collet nut threaded onto the threaded portion, and jaw means for tightening onto the shank of a male tap by tightening the collet nut on the threaded portion of the cylindrical body.
A compact hand tap wrench for manually cutting threads on the inner surface of a hole, the wrench comprising a ring base, a pair of diametrically opposed handles mounted to the base, a rotatable driven member carried within the base, and a ratchet mechanism for converting oscillating movement of the base to rotational movement of the driven member, the driven member comprising a generally cylindrical body having an axis of rotation, a toothed portion at an upper end of the cylindrical body, the toothed portion forming a part of the ratchet mechanism, and a chuck at a lower end of the driven member, the chuck including a threaded portion on the lower end of the cylindrical body, a collet nut threaded onto the threaded portion, and jaw means for tightening onto the shank of a male tap by tightening the collet nut on the threaded portion of the cylindrical body, the wrench being sized and shaped to permit both handles to be grasped and the ring base and driven member turned with a single hand.
A compact ratchet wrench comprising a ring base, a pair of diametrically opposed handles mounted to the base, a rotatable driven member carried within the base, a ratchet mechanism built into one of the handles, and a chuck body, the ratchet mechanism including an axial bore in one handle, a spring-loaded pawl in the bore, the pawl having a clutch face engaging the driven member, a locking pin extending through a transverse slot in the handle, and a collar rotatably mounted on the handle for turning the pawl through the locking pin, the collar moving the pawl to positions for reversing the direction of ratcheting and for locking the chuck with respect to the base;
- the driven member including a toothed driven member carried in the base for rotation about a drive axis;
- movable jaws carried by the chuck body and a collet nut threaded onto the chuck body for tightening and loosening the movable jaws, the chuck body including a transverse slot, and the jaws comprising a pair of removable jaws carried in the transverse slot.
A compact ratchet wrench comprising a ring base, a pair of diametrically opposed handles mounted to the base, a rotatable driven member carried within the base, the driven member including a toothed driven member carried in the base for rotation about a drive axis, and a ratchet mechanism built into one of the handles, the ratchet mechanism including an axial bore in one handle and a spring-loaded pawl in the bore, the pawl having a clutch face engaging the driven member, and means for rotating the pawl from a first position in which the pawl drives the driven member in only a first direction, to a second position in which the pawl drives the driven member in two directions, to a third position in which the pawl drives the driven member in only a second direction, the means for rotating the pawl comprising a locking pin extending through a transverse slot in the handle, and a collar rotatably mounted on the handle for turning the pawl through the locking pin, the collar being continuous on its outer surface and including a groove on its inner surface for trapping the locking pin.
Dependencies are inferred from the claim text.