US2725255A - Slip resistant vacuum cups - Google Patents

Slip resistant vacuum cups Download PDF

Info

Publication number
US2725255A
US2725255A US373718A US37371853A US2725255A US 2725255 A US2725255 A US 2725255A US 373718 A US373718 A US 373718A US 37371853 A US37371853 A US 37371853A US 2725255 A US2725255 A US 2725255A
Authority
US
United States
Prior art keywords
sheet
cup
vacuum cups
slip resistant
vacuum
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
US373718A
Inventor
Watter Michael
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.)
ThyssenKrupp Budd Co
Original Assignee
Budd Co
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 Budd Co filed Critical Budd Co
Priority to US373718A priority Critical patent/US2725255A/en
Application granted granted Critical
Publication of US2725255A publication Critical patent/US2725255A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0212—Circular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0231—Special lip configurations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0293—Single lifting units; Only one suction cup
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B47/00—Suction cups for attaching purposes; Equivalent means using adhesives
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F1/00—Cardboard or like show-cards of foldable or flexible material
    • G09F1/10—Supports or holders for show-cards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/005—Means to increase the friction-coefficient

Definitions

  • One of the objects of the invention is to provide a vacuum or suction cup which has the usual lifting ability and which at the same time resists lateral movement along a sheet being lifted even when the sheet is covered with a material such as oil, water or the like which normally causes vacuum cups to slide along the surface when forces are exerted in this direction.
  • Another object is to provide a vacuum cup which has good lifting characteristics and resistance to surface slip, yet which is inexpensive to make and durable in service.
  • Fig. 1 is a face plan view of a vacuum or suction cup embodying the invention
  • Fig. 2 is an axial section showing the cup ready to engage a sheet
  • Fig. 3 is a similar section showing the vacuum cup applied to a sheet.
  • the vacuum cup which comprises a body portion and a thin smooth outer edge 11 is provided interiorly with a non-skid surface 12 of a material which resists slippage along the surface of the sheet being lifted.
  • a gritty or abrasive material may for example, be used for greasy metal sheets.
  • the non-skid surface is disposed at a distance from the 2,725,255 Patented Nov. 29, 1955 either to create a vacuum to cause the cup to adhere to a sheet or to admit air to cause the cup to be released, or both.
  • Fig. 3 shows how the non-skid surface is brought into engagement with the surface of a sheet 15 after the outer edge has been bent sufiiciently. This figure also indicates by arrows the direction of forces which may be encountered tending to slide the cup along the sheet.
  • cups made according to the present invention have all the lifting power of normal cups and at the same time resist very strongly any tendency to slip along a sheet even when very strong forces are applied in this direction.
  • the material used for the vacuum cups While rubber is referred to as the material used for the vacuum cups, it will be understood that other flexible resilient materials having like characteristics for the intended purposes may be used.
  • the cups when oily sheets are to be handled the cups may be composed of neoprene or other material which is not injured by the oil. Again, the entire cup is shown to be formed of rubber but if greater strength is desired the body may be reinforced with a stronger flexible material such as steel sheet, or indeed the entire cup except for the flexible gripping outer edge may be formed of a material other than the rubber-like material used for the outer edge.
  • a vacuum cup comprising a body portion, a resilient flexible edge portion of a rubber-like material adapted to form a seal with the surface of the article to be lifted, and a surface-exposed annular zone of a dry gritty nonskid abrasive material bonded to the inner surface of the cup and disposed within and at a distance from the periphery of the cup and which is brought into engagement with the surface of the article when it is gripped by the vacuum cup for resisting slippage along the surface of the article.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Table Devices Or Equipment (AREA)

Description

Nov. 29, 1955 2,725,255
M. WATTER SLIP RESISTANT VACUUM CUPS Filed Aug. 12, 1953 rIIIIIIII,l1111111,I"1111111111,!!!lllllllllllllllllllllllllllllllllawlllllllfl IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII INVENTOR Michael Waiter.
BY W a, M
ATTORNEY United States Patent SLIP RESISTANT VACUUM CUPS Michael Watter, Philadelphia, Pa., assignor to The Budd Company, Philadelphia, Pa., a corporation of Pennsylvania Application August 12, 1953, Serial No. 373,718
1 Claim. (Cl. 29464) This invention relates to slip resistant vacuum cups and has for an object the provision of improvements in this art.
One of the objects of the invention is to provide a vacuum or suction cup which has the usual lifting ability and which at the same time resists lateral movement along a sheet being lifted even when the sheet is covered with a material such as oil, water or the like which normally causes vacuum cups to slide along the surface when forces are exerted in this direction.
Another object is to provide a vacuum cup which has good lifting characteristics and resistance to surface slip, yet which is inexpensive to make and durable in service.
The above and other objects and advantages of the invention will be apparent from the following description of an exemplary embodiment, reference being made to the accompanying drawings thereof, wherein:
Fig. 1 is a face plan view of a vacuum or suction cup embodying the invention;
Fig. 2 is an axial section showing the cup ready to engage a sheet; and
Fig. 3 is a similar section showing the vacuum cup applied to a sheet.
As vacuum cups are normally used, the rubber or rubber-like edge obtains a good seal with the surface of a sheet which is to be lifted and if the surface of the sheet is dry there will be good frictional engagement between the cup and the sheet which will satisfactorily resist forces applied parallel to the surface of the sheet tending to produce slippage of the cup along the sheet. For most uses of vacuum cups only dry sheets are encountered. However, when the attempt is made to feed greased metal sheets used in sheet forming press work, the cups often slip along the surface of the sheets. This is objectionable when positive side movement, quick starts and stops, and accurate positioning of sheets are desired.
According to the present invention the vacuum cup, which comprises a body portion and a thin smooth outer edge 11 is provided interiorly with a non-skid surface 12 of a material which resists slippage along the surface of the sheet being lifted. A gritty or abrasive material, may for example, be used for greasy metal sheets. The non-skid surface is disposed at a distance from the 2,725,255 Patented Nov. 29, 1955 either to create a vacuum to cause the cup to adhere to a sheet or to admit air to cause the cup to be released, or both.
Fig. 3 shows how the non-skid surface is brought into engagement with the surface of a sheet 15 after the outer edge has been bent sufiiciently. This figure also indicates by arrows the direction of forces which may be encountered tending to slide the cup along the sheet.
It has been found that cups made according to the present invention have all the lifting power of normal cups and at the same time resist very strongly any tendency to slip along a sheet even when very strong forces are applied in this direction.
While rubber is referred to as the material used for the vacuum cups, it will be understood that other flexible resilient materials having like characteristics for the intended purposes may be used. For example, when oily sheets are to be handled the cups may be composed of neoprene or other material which is not injured by the oil. Again, the entire cup is shown to be formed of rubber but if greater strength is desired the body may be reinforced with a stronger flexible material such as steel sheet, or indeed the entire cup except for the flexible gripping outer edge may be formed of a material other than the rubber-like material used for the outer edge.
One embodiment has been described for purposes of illustration but it is to be understood that there may be other embodiments within the general scope of the invention.
What is claimed is:
A vacuum cup comprising a body portion, a resilient flexible edge portion of a rubber-like material adapted to form a seal with the surface of the article to be lifted, and a surface-exposed annular zone of a dry gritty nonskid abrasive material bonded to the inner surface of the cup and disposed within and at a distance from the periphery of the cup and which is brought into engagement with the surface of the article when it is gripped by the vacuum cup for resisting slippage along the surface of the article.
References Cited in the file of this patent UNITED STATES PATENTS 1,426,930 Waldron Aug. 22, 1922 1,842,383 Bell Jan. 26, 1932 1,859,893 Ritz-Weller May 24, 1932 2,069,942 Cohen Feb. 9, 1937 2,557,434 Hoverder June 19, 1951 FOREIGN PATENTS 383,690 Great Britain Nov. 24, 1932
US373718A 1953-08-12 1953-08-12 Slip resistant vacuum cups Expired - Lifetime US2725255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US373718A US2725255A (en) 1953-08-12 1953-08-12 Slip resistant vacuum cups

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US373718A US2725255A (en) 1953-08-12 1953-08-12 Slip resistant vacuum cups

Publications (1)

Publication Number Publication Date
US2725255A true US2725255A (en) 1955-11-29

Family

ID=23473572

Family Applications (1)

Application Number Title Priority Date Filing Date
US373718A Expired - Lifetime US2725255A (en) 1953-08-12 1953-08-12 Slip resistant vacuum cups

Country Status (1)

Country Link
US (1) US2725255A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815240A (en) * 1955-02-11 1957-12-03 Vac U Lift Company Suction pads with floating sealing ring
DE1092618B (en) * 1957-02-15 1960-11-10 Vac U Lift Company Gripping device with air evaporation
US4345658A (en) * 1978-09-29 1982-08-24 Commissariat A L'energie Atomique Vehicle able to move by adhesion on a random surface
US4852926A (en) * 1988-01-11 1989-08-01 Littell Edmund R Vacuum cup construction
US5013075A (en) * 1988-01-11 1991-05-07 Littell Edmund R Vacuum cup construction
US5882055A (en) * 1996-02-12 1999-03-16 Aetrium Incorporated Probe for handling microchips
US20040112233A1 (en) * 2002-12-10 2004-06-17 Fuji Photo Film Co., Ltd. Printing plate sucker
FR2921842A1 (en) * 2007-10-05 2009-04-10 Jacques Gilgenmann Fixation device for suspending person on e.g. hull of boat, has anti-skating device, and vacuum pump that is integrated to clamp by mechanical connection, where pump is integrated to vacuum lifting beam by another mechanical connection
DE102014012788B4 (en) 2013-09-02 2019-04-25 Rainer Förster Device for fixing components consisting of workpieces for assemblies to be realized on welding tables

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1426930A (en) * 1919-10-17 1922-08-22 Pilkington Brothers Ltd Pneumatic load-engaging means
US1842383A (en) * 1929-11-29 1932-01-26 Ivan C Bell Suction supporting device
US1859893A (en) * 1931-11-14 1932-05-24 Oliver C Ritz-Woller Suction cup
GB383690A (en) * 1932-07-18 1932-11-24 Harold Falkner Anns Improvements in or relating to means for suspending or supporting articles
US2069942A (en) * 1935-08-17 1937-02-09 Casco Products Corp Suction cup
US2557434A (en) * 1949-07-25 1951-06-19 Wallace P Hoverder Supporting fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1426930A (en) * 1919-10-17 1922-08-22 Pilkington Brothers Ltd Pneumatic load-engaging means
US1842383A (en) * 1929-11-29 1932-01-26 Ivan C Bell Suction supporting device
US1859893A (en) * 1931-11-14 1932-05-24 Oliver C Ritz-Woller Suction cup
GB383690A (en) * 1932-07-18 1932-11-24 Harold Falkner Anns Improvements in or relating to means for suspending or supporting articles
US2069942A (en) * 1935-08-17 1937-02-09 Casco Products Corp Suction cup
US2557434A (en) * 1949-07-25 1951-06-19 Wallace P Hoverder Supporting fixture

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815240A (en) * 1955-02-11 1957-12-03 Vac U Lift Company Suction pads with floating sealing ring
DE1092618B (en) * 1957-02-15 1960-11-10 Vac U Lift Company Gripping device with air evaporation
US4345658A (en) * 1978-09-29 1982-08-24 Commissariat A L'energie Atomique Vehicle able to move by adhesion on a random surface
US4852926A (en) * 1988-01-11 1989-08-01 Littell Edmund R Vacuum cup construction
US5013075A (en) * 1988-01-11 1991-05-07 Littell Edmund R Vacuum cup construction
US5882055A (en) * 1996-02-12 1999-03-16 Aetrium Incorporated Probe for handling microchips
US20040112233A1 (en) * 2002-12-10 2004-06-17 Fuji Photo Film Co., Ltd. Printing plate sucker
US7028617B2 (en) * 2002-12-10 2006-04-18 Fuji Photo Film Co., Ltd. Printing plate sucker
FR2921842A1 (en) * 2007-10-05 2009-04-10 Jacques Gilgenmann Fixation device for suspending person on e.g. hull of boat, has anti-skating device, and vacuum pump that is integrated to clamp by mechanical connection, where pump is integrated to vacuum lifting beam by another mechanical connection
DE102014012788B4 (en) 2013-09-02 2019-04-25 Rainer Förster Device for fixing components consisting of workpieces for assemblies to be realized on welding tables

Similar Documents

Publication Publication Date Title
US2725255A (en) Slip resistant vacuum cups
US3195941A (en) Vacuum gripping pad
US2795444A (en) Sealing washer
GB954599A (en) Masking sheet material
US2589101A (en) Lift truck fork tube
ITPI20100109A1 (en) AN ANTI-SLIP AND ANTI-SCRATCH DEVICE FOR LIFTING LOADS PREFERABLY BY USING A FORK OF A LIFT.
US2342910A (en) Fastening device
EP4269482A3 (en) Water-soluble film for packaging
US2982325A (en) Anti-slip element for vehicle tires
US3063746A (en) Universal vacuum cup
US1512896A (en) Rim nut or the like
CN109721931A (en) A kind of wear-resisting thermoplastic elastomer
US2264741A (en) Cup packing
US11375762B2 (en) Glove with dry-adhesive and dry-non-adhesive micro-wedges
CN106003122A (en) Strong vacuum sucking disc
JPH0230807Y2 (en)
JPH0485039A (en) Printing cyclinder
US2344880A (en) Groove dressing tool
CN209758816U (en) Soft thin plate allocation and transportation clamp device
US4203363A (en) Sheet gripper for printing cylinder and the like
JPS60167789A (en) Gripper for robot
US2777723A (en) Doffing tool
PH12020551758A1 (en) Workpiece protection sheet
US2240789A (en) Sheet packing and gasket
JPH05320365A (en) Rubber part for contact use and its production