US3687409A - Fastening support means - Google Patents

Fastening support means Download PDF

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Publication number
US3687409A
US3687409A US118457A US3687409DA US3687409A US 3687409 A US3687409 A US 3687409A US 118457 A US118457 A US 118457A US 3687409D A US3687409D A US 3687409DA US 3687409 A US3687409 A US 3687409A
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US
United States
Prior art keywords
aperture
recess
leg
load
housing
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
US118457A
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English (en)
Inventor
Billy G Cook
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3687409A publication Critical patent/US3687409A/en
Assigned to BLACK & DECKER, INC., A CORP. OF DE reassignment BLACK & DECKER, INC., A CORP. OF DE ASSIGNS AS OF APRIL 27, 1984 THE ENTIRE INTEREST Assignors: GENERAL ELECTRIC COMPANY A NY CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/34—Supports for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/10—Frying pans, e.g. frying pans with integrated lids or basting devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/10—Frying pans, e.g. frying pans with integrated lids or basting devices
    • A47J37/105—Frying pans, e.g. frying pans with integrated lids or basting devices electrically heated

Definitions

  • the invention discloses a fastening support means such as may be used between metallic and plastic members such as support legs and terminal guards in an electric skillet or similar device.
  • the invention is directed to the fastening means whereby dissimilar materials can be joined together for sole support on a common plane for independent expansion between the parts and no compression of either. This overcomes the tendency of skillet legs to loosen under constant use and provides a fastening means which remains permanently tight.
  • the invention is directed to a fastening support means primarily for use between dissimilar materials and, while not so limited, is described in connection with an electric skillet. It is directed to a connection that overcomes the tendency of the skillet legs to loosen and is achieved by a unique coplanar fastening means whereby continuous expansion andcontraction can take place without any loosening of the legs.
  • the invention is directed to a fastening support means primarily, but not exclusively, for the legs of an electric probe-controlled skillet wherein the metallic skillet body uses plastic legs or other parts such as a terminal guard attached thereto.
  • a boss projecting from the skillet body and the boss is provided with a substantially flat load bearing lower surface thereon.
  • a plastic leg support is provided with a recess that has a bottom and the recess is formed in the upper part of the leg to'receive the boss in nesting relation to provide the sole support of the load surface, and therefore the skillet on the recessed bottom along a reference plane.
  • the parts are of generally different materials, the skillet being of aluminum and the leg of a heat-resisting-plastic. Securing of the leg to the skillet is obtained by providing the leg with an aperture means opposite the recess and extending the aperture down to the reference plane.
  • the aperture is shaped differently from the recess or, if the same shape, it is differently oriented to provide spaced portions straddling the recess which spaced portions are coplanar with the load surface.
  • the leg is then secured to the skillet by any suitable means such as a screw extending into the aperture whereby the screw head overlaps and bears on the spaced portions of the plastic leg and, at the same time, on the load surface. Simultaneously, the load surface bears on the bottom of the recess to limit upward movement.
  • the main object of the invention is to provide a unique fastening support means between materials which may be dissimilar and which support means uses no more parts than prior art structure but,'by providing different orientations of the usual openings and recesses, the fastener ensures a structure that is permanently tight under repeatedcontraction and expansion at difierent rates because it allows independent expansion and contraction of the materials.
  • FIG. 1 is a general perspective view of an electric skillet illustrating a typical application of the invention
  • a cooking vessel such as an electric skillet 10 which is generally of aluminum construction with a lifting means such as stick handle 12.
  • the skillet is provided with a plurality of supporting legs 14 that are usually of heat resistant plastic.
  • the temperature of the skillet is controlledby a thermostatic probe, not shown, which is inserted into a metallic housing 16 in the form of a boss-like extension bonded to the bottom wall 18 of the skillet.
  • a thermostatic probe not shown
  • the user is insulated from electrical shocks by the use of a plastic terminal guard 20 that is secured to the housing 16 and prevents access to the electric terminals of the heating element.
  • This structure is well-known and common to electric skillets.
  • FIG. 2 actually is a view looking up on the bottom of the skillet with the parts broken for illustration.
  • the plastic terminals guard 20 is generally screwed directly to the skillet at metallic housing 16 as shown. Consequently, onheating and cooling and the differential expansion, it is impossible to maintain a tight fastening with the result that the terminal guard is constantly loose.
  • the invention overcomes this defect as will now be apparent.
  • the usual metallic housing 16 is provided with a downwardly projecting load bearing surface 22 that projects away from the main part of housing 16.
  • This may be in any form and, in the terminal guard application, is conveniently made as a longitudinally extending flat-surfaced rib 22 formed directly on the housing 16.
  • the plastic terminal guard 20 has a matching recess 24 on its inner surface in which the rib 22 rests. It will be seen that the load bearing surface 26 between the rib 22 and recess 24 is the sole support between the terminal guard 20 and housing 16.
  • any suitable tubular opening equivalent to aperture 30 may be used which has a diameter or cross section larger than the width of rib 22 and this then provides the spaced segment portions 32 straddling the rib.
  • the terminal guard is then secured to housing 16 by any suitable means. Typically, this is conveniently done by a screw-like fastening means 34 which, when threaded at 36 into the housing 16 causes the wide screw head to overlap and bear on the spaced segment portions 32 as well as on load surface 26. As previously described in connection with FIG. 3, the spaced portions and load surface thus lie in the reference plane P and are therefore coplanar when screw 34 is tightened into housing 16.
  • the terminal guard 20 may expand at its own rate and can expand into clearance 28 if appropriate while, at the same time, being carried in the opposite direction by the expansion of housing 16. Again, there is no compression of either housing 16 or guard 20 and each expands independently of the other while being secured together along a common reference plane P. The result is that the screw 34 may be tightened securely into threaded portion 36 and the terminal guard 20 does not loosen under constant expansion and contraction and whether of the same or different materials.
  • FIG. 3 the same general concept of fastening different members along a common reference plane is shown as applied to the more troublesome plastic legs used on a skillet.
  • the bottom wall 18 of the cooking vessel or skillet may be provided at each leg with a projecting load bearing surface in the form of a boss 38 that projects downwardly from the bottom wall of the skillet.
  • a suitable load bearing surface such as a substantially flat lower surface 40 is provided with threaded portion 42 or its equivalent.
  • leg support 14 is provided with a matching recess 44 which has a corresponding flat bottom surface 46 formed in the upper part of the leg and this recess receives boss 38 in nesting relation for sole support of surface 40 on bottom 46 along a reference plane P.
  • the recess 44 and boss 38 are substantially square although any cross-sectional shape may be used and other different shapes are shown in FIGS. 5-9 that will be explained.
  • an aperture means generally indicated at 48, is provided opposite recess 44 and the aperture means extends into the leg to reference plane P.
  • this aperture 48 is shown as a substantially four fingered opening, this shape providing four spaced portions 50 that straddle or overlap the bottom wall 46 of recess 44 whereby the portions 50 lie in plane P and provide abutment to prevent any pass-through into recess 44.
  • the central portion of aperture means 48 extends completely through and into recess 44 and it is only the straddling portions or ears 50 that stop at plane P.
  • a suitable screw-like fastener 52 is provided.
  • the term screw-like fastener is intended to cover any equivalent such as arivet or the like even though the common machine screw as shown in FIG. 3 is generally used.
  • the screw head may be shaped by the use of an attached four-fingered washer 54 that is rotatable relative to the screw. The screw head and washer, in effeet, then act as a wide screw head of particular shape.
  • FIG. 4 there is shown a square boss 56 with a cut-out 58 in each side to align the boss with rib 60 in the matching leg portion as shown in FIG. 5.
  • the opposite aperture 62 may then be round to extend down to common plane P whereupon the overlapping or straddling portions 64 are provided for screw head 66 to bear against while also bearing against the bottom of boss 56 and both surfaces lie in common reference plane P.
  • boss and recess shapes being somewhat different.
  • a rounded three-fingered boss 68 is used in a matching recess 70 in the leg portion and a round aperture 72 is used in the other side of the leg to provide the spaced portions 74 for cooperation with screw 76 along common plane P in the manner as previously described.
  • FIGS. 8 and 9 show another modification wherein the boss 78 is square to fit in a matching recess 80 in leg 14 and the opposite aperture 82 is also square but rotated 90 degrees or any other suitable amount to provide a different orientation and consequent spaced portions 84 for the coplanar bearing of screw head 86 along common reference plane P as previously described.
  • aperture means in the other side of said second member opposite said recess and extending to said plane, said aperture being shaped to provide spaced portions straddling and coplanar with said load surface, and
  • said aperture being tubular-shaped to provide spaced segment portions and
  • said overlapping means is a screw-like fastener in said first member with the screw head means bearing on said segment portions and said load surface in said reference plane.
  • leg support structure comprising,
  • said recess is a matching longitudinal recess
  • said aperture is a tubular opening having a diameter larger than said rib width to provide spaced segment portions straddling said rib.
  • securing means extends into said aperture and is a screw-like fastener with its wide head bearing on said spaced segment portions of said terminal guard and said load surface, and its shank threading into said housing rib.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Connection Of Plates (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
US118457A 1971-02-24 1971-02-24 Fastening support means Expired - Lifetime US3687409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11845771A 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
US3687409A true US3687409A (en) 1972-08-29

Family

ID=22378714

Family Applications (1)

Application Number Title Priority Date Filing Date
US118457A Expired - Lifetime US3687409A (en) 1971-02-24 1971-02-24 Fastening support means

Country Status (5)

Country Link
US (1) US3687409A (Direct)
AU (1) AU3882672A (Direct)
DE (1) DE2208715A1 (Direct)
FR (1) FR2127758A5 (Direct)
GB (1) GB1373436A (Direct)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567719A1 (fr) * 1984-07-20 1986-01-24 Morel Charles Appareil de cuisson
US5957418A (en) * 1996-05-28 1999-09-28 P.I., Inc. Leg arrangement for furniture
US20070181118A1 (en) * 2006-02-06 2007-08-09 Bruno Adrian A Ceramic bushing
US7658034B1 (en) * 2008-12-04 2010-02-09 DICKSON John Plant container
EP2260111B1 (en) 2008-03-14 2015-06-17 Genentech, Inc. Genetic variations associated with drug resistance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352583A (en) * 1942-10-03 1944-06-27 Westinghouse Electric & Mfg Co Joint construction
US2764266A (en) * 1953-02-06 1956-09-25 Rolls Royce Separable joints
US2816685A (en) * 1957-04-10 1957-12-17 Gen Electric Electric cooking vessel support
US3135536A (en) * 1960-10-28 1964-06-02 Atomic Energy Authority Uk Internal fastenings for joints

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352583A (en) * 1942-10-03 1944-06-27 Westinghouse Electric & Mfg Co Joint construction
US2764266A (en) * 1953-02-06 1956-09-25 Rolls Royce Separable joints
US2816685A (en) * 1957-04-10 1957-12-17 Gen Electric Electric cooking vessel support
US3135536A (en) * 1960-10-28 1964-06-02 Atomic Energy Authority Uk Internal fastenings for joints

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567719A1 (fr) * 1984-07-20 1986-01-24 Morel Charles Appareil de cuisson
US5957418A (en) * 1996-05-28 1999-09-28 P.I., Inc. Leg arrangement for furniture
US20070181118A1 (en) * 2006-02-06 2007-08-09 Bruno Adrian A Ceramic bushing
US8074635B2 (en) * 2006-02-06 2011-12-13 Weber-Stephen Products Co. Ceramic bushing
EP2260111B1 (en) 2008-03-14 2015-06-17 Genentech, Inc. Genetic variations associated with drug resistance
US7658034B1 (en) * 2008-12-04 2010-02-09 DICKSON John Plant container

Also Published As

Publication number Publication date
FR2127758A5 (Direct) 1972-10-13
GB1373436A (en) 1974-11-13
AU3882672A (en) 1973-08-16
DE2208715A1 (de) 1972-09-07

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AS Assignment

Owner name: BLACK & DECKER, INC., 1423 KIRKWOOD HIGHWAY NEWARK

Free format text: ASSIGNS AS OF APRIL 27, 1984 THE ENTIRE INTEREST;ASSIGNOR:GENERAL ELECTRIC COMPANY A NY CORP.;REEL/FRAME:004349/0275

Effective date: 19840824

STCK Information on status: patent revival

Free format text: ABANDONED - RESTORED