Adjustable wrench

{
  "publication_number": "US9434054B2",
  "country": "US",
  "kind": "B2",
  "title": "Adjustable wrench",
  "abstract": "A wrench having two separate jaw arms, at least one jaw member on each said arm, and a sliding cam engaging the two arms, so that the two arms can be adjusted together or apart while maintaining the respective jaw members in a precise parallel relationship, and in which the cam engages both the jaw arms simultaneously.",
  "claims": [
    "1. A wrench having two separate jaw arms, and comprising; two jaw members on each said arm, one at one end of each said arm and the other at the other end of each said arm; a sliding cam engaging the two arms, so that the two arms can be adjusted together or apart while maintaining the respective jaw members in a precise parallel relationship, two linear grooves formed along diverging linear axes, in said cam, one said arm being received in one said groove and the other said arm being received in the other said groove and in which the cam engages both the jaw arms simultaneously; and, wherein said jaw members on one said arm define respective slots, and wherein said jaw members on the other said arm define respective sliders received in said slots.",
    "2. A wrench having two separate jaw arms as claimed in claim 1, wherein one of said grooves in said sliding cam define a first predetermined depth, and wherein the other said groove in said sliding cam defines a depth greater than said predetermined depth.",
    "3. A wrench having two separate jaw arms as claimed in claim 2, including an abutment on said sliding cam engaging one of said arms in said groove of greater depth.",
    "4. A wrench having two separate jaw arms as claimed in claim 3, wherein the sliding cam defines a first cam body portion defining said grooves and a cam plate portion attached to said cam body portion, securing said arms in said grooves.",
    "5. A wrench having two separate jaw arms as claimed in claim 4, wherein said abutment is formed on said cam plate portion registering with said groove of greater depth."
  ],
  "description_excerpt": "This application is based on U.S. Provisional Application 61/852,936 filed Mar. 25, 2013, Title: Adjustable Wrench; Inventor: Lean A. Lim; the priority of which is claimed. The invention relates to an adjustable wrench, and in particular in which the adjustment is provided by means of a sliding cam.\n\nVarious forms of adjustable wrenches are well known. One is the so called “Monkey Wrench”, in which there are two separate jaws, like scissors, which can be swung together by means of operating two handles. Another form is a wrench in which there is one fixed jaw and in which there is an adjustable jaw operated by means of a screw threaded rod, and a knurled nut. Numerous other forms of adjustable wrenches have been proposed.\n\nThe monkey wrench type of adjustment suffers from the problem that while it provides a firm grip on the nut, it can easily damage the nut so that it can not be reused. The form of wrench in which the adjustment is achieved by a threaded rod and a nut, is usually unsatisfactory. It is difficult to adjust the wrench to exactly the right opening, and it is common that the adjustment does not remain fixed, and the wrench may end up damaging the nut.\n\nOne of the fundamental problems with adjustable wrenches is that the two jaws of the wrench should be maintained exactly parallel to one another, in order to grasp the opposite flat surfaces on a nut. However, this is seldom the case. Usually one jaw will move and result in a poor fit on the nut.",
  "cpc": [
    "B25B 13/32",
    "B25B 13/18"
  ],
  "ipc": [
    "B25B 13/18",
    "B25B 13/32"
  ],
  "inventors": [
    "Leon A. Lim"
  ],
  "filing_date": "2014-02-18",
  "publication_date": "2016-09-06",
  "grant_date": "2016-09-06",
  "priority_date": "2013-03-25",
  "application_number": "US-201413999362-A",
  "family_id": "51568154",
  "cited_by_count": 0,
  "citations": [
    "US685389A",
    "US1440950A",
    "US1444907A",
    "US1478512A",
    "US2293002A",
    "US4916987A",
    "US7156001B2",
    "US20140000416A1"
  ]
}