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US 4,381,661 AGranted
Tool having two working jaws
AssigneeC. A. Weidmuller GmbH & Co.
InventorsHans Wiener, Hans Undin
Life of this patent
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AssigneeC. A. Weidmuller GmbH & Co.
InventorsHans Wiener, Hans Undin
Estimating the term…
A tool particularly suitable for use in crimping includes two arm members and a pair of working jaws each supported on a different one of the arm members. A drive arrangement such as a pair of handles is connected to the arm members for moving the arm members relative to each other between open and closed positions. The drive arrangement, arm members and working jaws provide two force transmitting paths each extending between a different point on the drive arrangement where an external operating force is applied, and a different one of the working jaws whereat the operating force is transferred to an article to be worked on by the tool. At least one pivotal connection is provided, including at least one pivot member and a bearing member for engaging the pivot member. The bearing member is arranged to deform resiliently when the operating force is transferred to the bearing member by the pivot member. Preferably, at least one of the arm members is formed by two spaced apart, parallel arm plates, and a working jaw extends into the region between the plates. The plates and working jaw between them have at least two sets of aligned openings, and a retaining member which may be of resilient material is closely fitted in each set of openings to fix the working jaw to the arm member plates.
A tool comprising two arm members, two working jaws each supported on a different one of said arm members, said arm members and said working jaws supported thereon arranged for relative movement between open and closed positions, drive means connected to at least one of said arm members for imparting to said arm member a closing movement into the closed positions of said arm member and working jaws in response to an operating force applied to said drive means and transmitted along a force transmitting path to one of said working jaws, and at least one pivot means operatively and pivotally connecting one of said arm members to at least one of another said arm member and said drive means, said pivot means including a pivot member, bearing means engaging said pivot member, and resilient support means for said bearing means for allowing further relative closing movement to be transferred to said working jaws only when said support means have reached a certain degree of yield.
A tool comprising two working jaws for grasping an object, two arm members each supporting a different one of said working jaws and arranged for relative movement between open and closed positions, drive means connected to at least one of said arm members for imparting to said arm member a closing movement into the closed positions of said arm members and working jaws in response to an operating force applied to said drive means, a tool body rigidly incorporating one of said arm members, pivot means for defining the pivotal connection of the other said arm member relative to said arm member incorporated into said tool body, said pivot means comprising a pivot member, bearing means engaging said pivot member, and support means for securing said bearing means to said tool body and defined by at least one horseshoe-shaped resilient arm provided with an opening at each of its ends, one of said openings forming said bearing means and the other said opening serving to receive a pin attached to said tool body so as to allow, when said jaw members have closed upon the treated object and the operational force continues to be applied, further closing movement to be transferred to said arm member only after said resilient arm has reached a certain degree of yield.
A tool comprising two arm members arranged for relative movement between open and closed positions, a pair of working jaws each supported on a different one of said arm members, a drive arrangement connected to at least one of said arm members for moving the arm members between the open and closed positions in response to an external operating force supplied to said drive arrangement at a force application point thereon, said drive arrangement, said arm members and said working jaws providing two force transmitting paths each extending between a different point of application of an external force on said tool and a different one of said working jaws wherein said external force applied to the tool is transferred to an article arranged to be worked by said tool, pivot means for pivotally connecting one of said arm members to at least one of another of said arm members and said drive arrangement, said pivot means including at least one pivot member having a pivot axis, bearing means for engaging said pivot member and yieldable support means for said bearing means, one of said arm members and said drive arrangement form an elongated tool body, said pivot member is arranged to pivotally connect said arm members together, and said support means for said bearing means includes at least one resilient arm fixed to said tool body and having an opening at one end thereof for receiving said pivot member, and said at least one resilient arm is an elongated arm which is shaped arcuately to minimize movement of the other end of said resilient arm in the long direction of said resilient arm when external force is transferred to said resilient arm.
A tool comprising two arm members arranged for relative movement between open and closed positions, a pair of working jaws each supported on a different one of said arm members, a drive arrangement connected to at least one of said arm members for moving the arm members between the open and closed positions in response to an external operating force supplied to said drive arrangement at a force application point thereon, said drive arrangement, said arm members and said working jaws providing two force transmitting paths each extending between a different point of application of an external force on said tool and a different one of said working jaws wherein said external force applied to the tool is transferred to an article arranged to be worked by said tool, pivot means for pivotally connecting one of said arm members to at least one of another of said arm members and said drive arrangement, said pivot means including at least one pivot member having a pivot axis, bearing means for engaging said pivot member and yieldable support means for said bearing means, one of said arm members and said drive arrangement form an elongated tool body, said pivot member is arranged to pivotally connect said arm members together, and said support means for said bearing means includes at least one resilient arm fixed to said tool body and having an opening at one end thereof for receiving said pivot member, said at least one resilient arm is arcuately shaped, the other end of said resilient arm is fixed to said tool body, and said at least one resilient arm is generally horseshoe-shaped.
Dependencies are inferred from the claim text.