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Class 81/58.2 - Radially slotted or open end head


Subclass of Class 81 - Tools
Definition: Wrenches wherein the head has a slot extending from the
No. of patents: 78
Last issue date: 05/01/2012


1    
NumberTitleIssue Date
8166849Combination ratcheting wrench with a box-end wrench having an opening
A combination open-ended ratcheting wrench with a box-end wrench has a wrench having a wrench head, the wrench head having a first aperture with a first opening, a receptacle formed at an inner wall of the first aperture, at least one limiting groove disposed around...
05/01/2012
8100036Ratchet wrench
A ratchet wrench includes a handle and a moving jaw. The handle has a pivot portion disposed at a working end of the handle and a fixed jaw integrally extended from the handle. The moving jaw has a pivoting base pivotally coupled to the pivot portion, and a ratchet ...
01/24/2012
7895920Open end ratchet wrench
A ratchet wrench devised for torquing axially placed hexagonal nut fasteners on hydraulic or similar lines. The wrench is formed of two main components: The first component consists mainly of a straight elongated handle with a semi-circular collar head attached ther...
03/01/2011
7404245Fuel line disconnect tool
A fuel line disconnection tool includes a handle member with a hand grip end and a slotted opposite head end adapted to receive generally mirror image flanged adapters having semi-cylindrical tubular projections which enable placement of the adapters in the slot at ...
07/29/2008
7357053Vehicle tie rod adjustment device
A vehicle tie rod adjustment device for changing the toe of a vehicle wheel by adjusting the overall length of a tie rod assembly. The tie rod adjustment device generally includes a housing, a gear train, an adjustable gear head, and a nut runner. The pivotal gear h...
04/15/2008
7331259Ratchet wrench
The present invention relates to a ratchet wrench including a wrench with one end provided with a pivot hole; a turning knob disposed in the pivot hole of the wrench and containing a dial; a wheel member disposed to the handle of the wrench and containing also a dia...
02/19/2008
7318365Multistage socket
A multistage socket including a main body having a disc section. Multiple fixing blocks are disposed on one face of the disc section at equal angular intervals. A movable block is arranged between each two adjacent fixing blocks. The inner end faces of the movable b...
01/15/2008
7272996Spanner socket
A spanner socket for application with conventional hand tools such as ratchet drivers and fixed wrenches employed for imparting torque to a work piece about an axis of rotation includes a generally cylindrical shaped base member which defines a predetermined number ...
09/25/2007
7263918Ratchet structure for a wrench
A ratchet structure of a wrench includes a handle, a socket, a first detent, a first elastic element, a second detent, a second elastic element, a lid and a knob. The outer periphery of the socket is formed with gear teeth. The socket is accommodated in the handle. ...
09/04/2007
7249539Open end ratchet wrench
A ratchet wrench includes a generally open head member and a handle connected thereto. A pair of generally C-shaped collars are hingedly connected to the head member for selectively closing and opening it and a locking tab provided for selectively locking the collar...
07/31/2007
7246541Pipefitting engaging tool assembly
A pipefitting engaging tool assembly includes a housing that has a bottom wall and a peripheral wall. A head is attached to the housing and has a circular opening extending therethrough. The opening is defined by an outer edge that has a slot therein continually ext...
07/24/2007
7234372Reversible ratcheting tool with a smaller head and improved driving torque
A ratcheting tool includes a handle and a head with a compartment. A drive member includes a first end extended beyond the compartment, a second end extended beyond the compartment, and a gear wheel formed between the first end and the second end. The gear wheel is ...
06/26/2007
7228768Self-adjustable universal spanner with variable jaw spacing
Provided is a self-adjustable universal spanner employing a variable jaw sizing feature including: a spanner head having an upper slide groove and a lower groove for inserting a bolt therebetween; a ratcheting size-adjustment member slidable along the upper groove t...
06/12/2007
7213491Ratcheting tool
A ratcheting tool having an axial pawl ratcheting mechanism is provided that may be used for a screwdriver or wrench and comprises a first gear including axial gear teeth on a first side providing for ratcheting in a first direction. A second bidirectional gear has ...
05/08/2007
7188550Open end adjustable spanner
A new mechanism of an open-end adjustable spanner which includes a right latch, a left latch, a return spring, and a control member containing hairpin springs and a serrated bit installed in an accommodation trough of a handle to create a torque transmission structu...
03/13/2007
7185564Pipe wrench having a fixed positioning ring
A ratchet pipe wrench a C-shaped head including two jaws and a ratchet mechanism is received in the head so as to engage with a C-shaped engaging member rotatably engaged with the space between the two jaws of the head. A C-shaped positioning ring is securely engage...
03/06/2007
7181998Wrench
A wrench includes a wrench body having a ring portion and a handle portion. A retainer that holds a plurality of wedge members is disposed inside the ring portion. Wedge guide grooves are formed on the inner circumferential surface of the ring portion. Each of the w...
02/27/2007
7089830Compact wrench with three-stage control
A wrench includes a handle, a head, a drive member rotatably mounted in the head, two pawls, an elastic element for biasing at least one of the pawls to engage with the drive member, and a pivotable switch. An end of each pawl defines a space. The end of each pawl f...
08/15/2006
7077035Ratchet open-end wrench
A ratchet open-end wrench has a handle with a head portion at an end thereof. The head portion has two jaw, between which is a gap to receive a bolt therein. The jaw has a recess, wherein a space formed from the gap and the recess allows the bolt for free rotation. ...
07/18/2006
7073411Torsion spring tensioning apparatus
Apparatus for tensioning torsion spring, shaft-mounted in association with a spring cone, has a central ratchet assembly with two spaced, cogged ratchet wheels, slotted to allow the assembly to be rotatably positioned over the shaft. The ratchet assembly is connecta...
07/11/2006
7069824Leverage handle
A leverage handle tool includes a handle and a seat block. In use, a slot in the seat block is located upon a handle such as a vice handle, and the tool is pulled toward the handle end. As the tool is pulled toward the handle end the slot grips the handle due to the...
07/04/2006
7062992Constant rotation rotary torque multiplier
A wrench with torque augmenting means consisting of an output socket wrench which utilizes a ratchet arrangement and which includes an input cog that is adapted to receive an external drive tool. The input cog constantly rotates under the influence of the external d...
06/20/2006
7059219Reversible ratcheting tool with improved control member
A ratcheting tool includes a body and a gear disposed in the body. The gear defines a plurality of teeth on a circumference of the gear. A pawl is disposed in the body so that the pawl is movable with respect to the gear between a first position, in which the body t...
06/13/2006
7036227Process for making ratchet wheels
A process for manufacturing ratchet wheels including the steps of: forming a cylindrical forging billet by hot or cold forging, the forging billet having a thru hole of inter-communicating recesses which are pre-formed in a forging die; providing a broach having tee...
05/02/2006
6976408Annular wrench
An annular wrench includes a first ring for engagement with a hand, a second ring rotationally installed in the first ring for engagement with a tool bit, a one-way driving device arranged between the first ring and the second ring so that the first ring can drive t...
12/20/2005
6971287Reversible ratcheting tool with improved control member
A ratcheting tool includes a body and a gear disposed in the body. The gear defines a plurality of teeth on a circumference of the gear. A pawl is disposed in the body so that the pawl is movable with respect to the gear between a first position, in which the body t...
12/06/2005
6971284Compact ratchet wrench with adjustable jaws
The ratchet wrench of this invention includes a jaw adjustment assembly connected with a jaw and gear assembly carried by a wrench head. Components of the jaw adjustment assembly include a scroll plate inside a cap operated by a jaw adjustment disk located above the...
12/06/2005
6948405Low profile ratchet wrench
An improved low profile ratchet wrench comprising a rotatable head and a handle, wherein a lever projecting from the free end of the handle permits selective adjustment of the unidirectional rotation of the ratchet wrench. The lever eccentrically rotates so as to ur...
09/27/2005
6945143Self-adjustable universal spanner
The present invention relates to a self-adjustable universal spanner comprising: a spanner head member having a jaw for seating a bolt head and a feed groove. The jaw includes a flat contact surface which is in surface contact with the flat surface of the bolt head ...
09/20/2005
6918323Reversible ratcheting tool with improved pawl
A ratcheting tool includes a body and a gear disposed in the body. The gear defines a plurality of teeth on a circumference of the gear so that the gear teeth define a first arc having a first radius. A pawl is disposed in the body so that the pawl is movable latera...
07/19/2005
6810773Open end ratchet wrench
An open-end ratchet wrench includes a housing defining a handle and a head with an open mouth for receiving first and second elements of a work piece therein. A fixed jaw member on the wrench engages the first element and a moving jaw member engages the second eleme...
11/02/2004
6370987Apparatus and method for precisely controlling angular displacement of a socket
Apparatus and methods for precision control of degree of socket rotation where desired degree of rotation exceeds about 360°. One embodiment of the apparatus includes a cam structure associable with an assembly for holding and driving the socket so that ...
04/16/2002
6318215Opened-end ratchet wrench
An open-end hand held ratchet wrench which has a rigid semi-circular jaw cradle defining an interior semi-circular channel which is substantially U-shaped in cross section. A handle extends off the opposite end of the cradle. Four radial recesses are arra...
11/20/2001
6308593Apparatus for adjusting tie rod
In a tie rod adjusting apparatus which adjusts a tie rod of a steering mechanism for steering a front wheel of a motor vehicle, an open end wrench is supported by a supporting mechanism which has a freedom of four axes so as to be movable in the vehicle w...
10/30/2001
6305252Torque enhancing wrench
A wrench includes a handle having a head and having an enclosed peripheral wall formed in the head for forming an orifice in the head and for receiving a fastener to be driven by the head. The head includes a pair of opposite cusps extended inward of the ...
10/23/2001
6227076Shaft wrench
Wrench structure for placement on over a generally circular workpiece in either a lateral or an axial direction and having a drive head with a cavity formed by a base member and an access cap, a bore formed thru the base member and cap around a rotational...
05/08/2001
6155140Ratchet wrench
A ratchet wrench includes a head formed on a handle and having a notch, a gear rotatably engaged in the head and having an opening for receiving fasteners, and a pair of pawls pivotally secured in the head and biased to engage with the gear and to control...
12/05/2000
6050165Ratchet box wrench
A ratchet box wrench (10) comprising an elongate handle (12). A main housing (14) is at one end of the elongate handle (12). The main housing (14) has a circular cavity (16) therein with a seat (18) and a central aperture (20) therethrough. A geared socke...
04/18/2000
6035745Indexing clutch assembly for gear wrench
An improved gear wrench is disclosed having an indexing clutch assembly operably coupling an output shaft with a gear assembly. The indexing clutch assembly includes a rotor, a freewheeling mechanism rotatably coupling the rotor to a drive shaft, a stator...
03/14/2000
5960679Ratcheting open-end wrench
A ratcheting, open-end wrench concurrently engages more than half the corners of a nub during torquing. In preferred embodiments a wrench has a contacting cavity for receiving and torquing a nut, bolt head or other angularized nub. A chain carries a plura...
10/05/1999
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