Easco Hand Tools, Inc.

Dentsply Research & Development Corp.

K-d Manufacturing Company

Easco Corporation

Easco Hand Tool, Inc.

William G Mader

James A Van Lenten

Philip A Desmarais

Jacob C Krapowicz

Robert L Arnold

Richard P Folkenroth

Peter W Peppel

Ralph J Williams

Robert A Bresnahan

Paul J Rowean

Kenneth J Taggart

Edward W Bass

A wrench, such as a socket, for a torquing device, such as a ratchet wrench for cooperating with a fastener, such as a nut or bolt. The fastener has plurality of faces that join each other at respective edges. The fastener also has radii that are measured from the center of the fastener to the respective faces thereof, a first radius from the center of the fastener which is normal to the face of the fastener; a second radius at an angle of approximately 15.degree. from the first radius and a third radius at an angle of approximately 15.degree. plus a flank angle from the first radius. The coupling element includes a plurality of adjoining surfaces. Each surface includes an adjoining flank section at each end thereof that is angled with respect to the surface in a direction away from the corner of the fastener, the angle being the flank angle. The surface at the respective flank section thereof always engages the respective face of the fastener at a point thereon between the intercepting of the second radius and the intercepting of the third radius which point of intercepting is spaced from the respective adjacent corner of the fastener by an optimum distance.

Wrench openings

A handle for a hand tool having a tool portion to which the handle is secured rearwardly thereof. The handle has a substantially polygonally shaped cross-section to prevent rolling of the tool. An elastomeric sleeve having ribs thereon is disposed over the handle to facilitate gripping thereof even in greasy and oily conditions. A plurality of pockets are formed in the rearward portion of the handle opposite to the tool portion. An end cap having a plurality of complementary studs is disposed over and secured to the rearward portion of the handle so that each stud is received in and secured in a respective pocket. The end cap is color-coded and/or otherwise provided with indicia means to facilitate user recognition and selection thereof. In another embodiment, the end cap is integral with handle portion.

Hand tool handle having end cap with indicia

Nut driver

Ratchet wrench

A molded elastomeric sleeve is secured on the rear portion of a conventional socket for a hand ratchet wrench. Size indicia are carried by the sleeve for ready identification of the socket, and knurls on the sleeve facilitate a manual gripping of the socket for rotation thereof, whenever desired. In a preferred embodiment, the sleeve has a readily-projecting boss provided with a rim and a recess therein. A pressure-sensitive adhesive label, which carries the size indicia, is disposed within the recess below the rim on the boss. An internal annular groove is formed in the sleeve adjacent to the socket, and an adhesive is injected into the internal annular groove via at least one passageway formed in the sleeve. The passageway opens into the recess in the boss on the socket, and the passageway is subsequently covered by the pressure-sensitive adhesive label.

Elastomeric sleeve for wrench socket and method of manufacture thereof

Combination wrench

A cam lock socket has a plurality of pins having substantially oval-shaped cross-sections. The pins are received in complementary axially-extending circumferentially-spaced scalloped recesses formed in the socket body. When the socket is rotated in one direction or another, the pins are cammed out of their respective recesses to tighten on a nut (or the head of a bolt or stud). Means are provided for retaining the pins axially and radially in the socket body, and to preclude the pins from tilting about their respective longitudinal axes. In one embodiment, outwardly-extending fins on the pins are received in an internal annular groove formed in the socket body, and a resilient retaining ring is received in slots formed on the inside of pins. In another embodiment, a flanged bushing is mounted in the bore of the socket body and cooperates with inwardly-extending fins on the pins. The flange on the bushing carries a resilient O-ring which bears against the respective pins.

Wrench socket with cam locking feature

Display hook

A manually-operable tool is provided for insertion between the inboard and outboard caliper-mounted disc brake pads for the purpose of spreading the pads to facilitate placement over the rotor. The tool employs a screw having an elongated partially-threaded shank and a handle at the rearward end for manually rotating the screw about its axis. Supported on a non-threaded portion of the screw shank is a pivot-stud body having pivot studs extending laterally in opposite directions. Supported on the pivot studs, on each side of the screw shank, is a pair of scissor-like jaw levers or spreaders. Supported for sliding movement on the screw shank rearward of the pivot-stud body, i.e., between the pivot-stud and the shoulder of the handle, is a shoulder-stud body having camming studs extending laterally in opposite directions into the rearward jaw openings of the scissor-like spreaders. Threaded on the screw shank forward of the pivot-stud body is a shoulder-nut body having camming studs extending laterally in opposite directions into the forward jaw openings of the spreaders. When the screw is turned in a proper direction, the forward and rearward sets of camming studs are moved toward each other into the crotches of the scissor-like spreaders to spread both pairs of spreaders, thereby to spread, or to maintain at spaced separations, the inboard and outboard disc brake pads.

Disc brake pad spreader

A foot control for a dental unit having a control unit for the delivery of power to operate dental equipment, and including a plunger to effect a range of speeds for the equipment, said control unit being operated by an actuating member which engages said plunger to depress it, and said actuating member being universally actuated by a pedal selected from a series thereof arranged in spaced relationship upon a base and extending radially from the base and capable of being moved either pivotally in a horizontal plane or depressed vertically downward to actuate said actuating member in one direction to depress the plunger of said control unit to a degree corresponding to the speed desired for the dental equipment.

Foot control for dental equipment

An operatory chair, such as a dental chair, having an upper supporting member to which the seat and back unit of an operatory chair may be attached, particularly pertaining to the mechanism by which said supporting member for the seat and back is raised and lowered. The preferred construction comprises a pair of sets of pivotally connected links arranged in lazy tong manner, said links being operated by linkage mechanism actuated by a rotatable screw and follower in such manner that the movement of the supporting member for the seat and back is smooth and relatively slow, particularly at the commencement of elevating movement so as not to include sudden and rapid upward movement as is conventional with typical lazy tong structures used in jacks and the like.

Operatory chair operating mechanism

Growing community of inventors

York, PA, United States of America

William G Mader