US3807001A - Elbow lever pivot clamp - Google Patents

Elbow lever pivot clamp Download PDF

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Publication number
US3807001A
US3807001A US00321014A US32101473A US3807001A US 3807001 A US3807001 A US 3807001A US 00321014 A US00321014 A US 00321014A US 32101473 A US32101473 A US 32101473A US 3807001 A US3807001 A US 3807001A
Authority
US
United States
Prior art keywords
lever
clamp
pivot
operating lever
thumb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00321014A
Other languages
English (en)
Inventor
M Buchenau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DE STA CO DIVISION OF DOVER CORP US
STA CO DIVISION OF DOVER CORP
Original Assignee
STA CO DIVISION OF DOVER CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STA CO DIVISION OF DOVER CORP filed Critical STA CO DIVISION OF DOVER CORP
Application granted granted Critical
Publication of US3807001A publication Critical patent/US3807001A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44291—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member
    • Y10T24/44333—Clasp, clip, support-clamp, or required component thereof including pivoted gripping member having toggle operator for moving

Definitions

  • ABSTRACT comprises an improved elbow lever pivot clamp which includes a shield or guide for the fork opening to prevent injuries to the fingers or thumb when the handle of the clamp is grasped and the clamp is operated.
  • a curved tongue extends into the fork opening and prevents entrance of the fingers or thumb.
  • the invention relates to a particular type of elbow lever pivot clamp for clamping work pieces.
  • Such clamps are typically used in the field of body engineering for automotive vehicles and include a rigidly arranged base portion comprising two parallel plates spaced apart, a clamp lever pivotally supported between the plates and an operating lever formed as a handle at one end and at the other end forked to overlap the two parallel plates and connected thereto by a second pivotal support.
  • the operating lever is connected by a pivot lever to the clamp lever with pivotal connections of all the respective members positioned to provide a toggle locking action in closed position.
  • Pivot clamps of the above type are already well known from US. Pat. No. 3,149,832. Such pivot clamps have been successful for clamping purposes; however, their manipulation has been found to have a disadvantage relating to the safety of the operator. If the operating lever is not grasped with the required attention, a finger or thumb can be caught between the upper end of the pivot or elbow lever and the forked portion of the operating lever. Because of the toggle action of the clamp, high leverage forces are developed which may be applied to the trapped thumb or finger resulting in injuries which may be severe enough to cause loss of fingertips.
  • the invention comprises means to prevent the thumb or fingers of the operator from entering the fork opening of the operating lever.
  • the open area between the upper end of the pivot lever and the fork is shielded by a finger guide or finger abutment.
  • the shield is provided by an extending upper end of the pivot lever formed as a curved, smooth tongue extending into the fork opening.
  • FIG. 1 is a side elevational view of the pivot clamp
  • FIG. 2 is a front view of the pivot clamp.
  • the operating lever 1 and the clamp lever 2 are pivotally supported in a conventional fashion between or on the support plates 4 of the pivot clamp.
  • the pivot lever 3 is pivotally connected to the operating lever l and clamp lever 2 in conventional fashion as shown.
  • the operating lever 1 is forked as generally denoted by 7 to create an opening 5 in which the pivot lever 3 moves. Without the shield the upper end 6 moves into the opening 5 when lowering the operating lever l and therefore can cause the injuries mentioned above.
  • the finger guide is formed as an inwardly curved tongue 8 extending from the upper end 6 of the pivot lever 3 up into the opening 5 of the fork 7. Therefore, even if a finger or thumb is placed over the opening 5, no injury can occur when pivoting the operating lever l downwardly to open the clamp since the tongue 8 prevents the finger or thumb from being pinched by the upper end 6 into the opening
  • the pivot lever 3 is blanked and folded from sheet metal. Therefore the sheet metal blank for the pivot lever 3 incorporates integrally the tongue 8 and renders unnecessary the provision of a separate part to prevent injury.
  • a clamp comprising a base, a clamp lever pivotally supported on the base, a forked operating lever pivotally supported on the base, a pivot lever pivotally connecting the clamp lever and operating lever and spaced from the axes thereof, said pivot lever having an upper end adjacent the fork opening of the operating lever, the improvement characterized by a curved tongue shield extending from the pivot lever into the fork opening to prevent entrapment of the operators fingers or thumb between the pivot lever upper end and the fork opening upon operative movement of the operating lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)
  • Clamps And Clips (AREA)
US00321014A 1972-02-08 1973-01-04 Elbow lever pivot clamp Expired - Lifetime US3807001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2205779A DE2205779C2 (de) 1972-02-08 1972-02-08 Kniehebel Gelenkklemme

Publications (1)

Publication Number Publication Date
US3807001A true US3807001A (en) 1974-04-30

Family

ID=5835317

Family Applications (1)

Application Number Title Priority Date Filing Date
US00321014A Expired - Lifetime US3807001A (en) 1972-02-08 1973-01-04 Elbow lever pivot clamp

Country Status (6)

Country Link
US (1) US3807001A (sv)
DE (1) DE2205779C2 (sv)
FR (1) FR2171764A5 (sv)
GB (1) GB1364222A (sv)
IT (1) IT978814B (sv)
SE (1) SE390265B (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023170A1 (fr) * 1979-07-24 1981-01-28 Automobiles Citroen Dispositif de commande mécanique d'embrayage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538662A1 (de) * 1975-08-30 1977-03-03 Luk Lamellen & Kupplungsbau Reibungskupplung
DE9417667U1 (de) * 1994-11-08 1995-01-05 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Spannvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149832A (en) * 1962-04-02 1964-09-22 Sta Co Corp De Toggle clamp with adjustable guide
DE1225073B (de) * 1964-06-18 1966-09-15 Lauterjung Puma Werk Jagd- oder Fahrtenmesser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149832A (en) * 1962-04-02 1964-09-22 Sta Co Corp De Toggle clamp with adjustable guide
DE1225073B (de) * 1964-06-18 1966-09-15 Lauterjung Puma Werk Jagd- oder Fahrtenmesser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023170A1 (fr) * 1979-07-24 1981-01-28 Automobiles Citroen Dispositif de commande mécanique d'embrayage
FR2461845A1 (fr) * 1979-07-24 1981-02-06 Citroen Sa Dispositif de commande mecanique d'embrayage

Also Published As

Publication number Publication date
DE2205779A1 (sv) 1973-04-26
IT978814B (it) 1974-09-20
DE2205779B1 (de) 1973-04-26
SE390265B (sv) 1976-12-13
GB1364222A (en) 1974-08-21
DE2205779C2 (de) 1973-11-29
FR2171764A5 (sv) 1973-09-21

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