US3303963A - Covering of parts - Google Patents

Covering of parts Download PDF

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Publication number
US3303963A
US3303963A US430446A US43044665A US3303963A US 3303963 A US3303963 A US 3303963A US 430446 A US430446 A US 430446A US 43044665 A US43044665 A US 43044665A US 3303963 A US3303963 A US 3303963A
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US
United States
Prior art keywords
shell
sleeve
retaining members
opposite ends
secured
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
US430446A
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English (en)
Inventor
Grinyer Edward George
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.)
Hoover Co
Original Assignee
Hoover 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 Hoover Co filed Critical Hoover Co
Application granted granted Critical
Publication of US3303963A publication Critical patent/US3303963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners

Definitions

  • This invention relates to the covering of parts with a layer of material for example flexible resilient material, -and although the invention has broad application it is specifically concerned with the covering of a suction cleaner shell with a sleeve of material, for example polyvinyl chloride.
  • a method of covering a part with a layer of flexible resilient material comprises securing longitudinal retaining members of U-section to spaced portions of a piece of the material, applying the piece of the material to the part, tensioning the piece of material by drawing the retaining members apart, and securing the retaining members to the part.
  • the part is of relatively thin sheet it is conveniently arranged that opposite edges of the piece of resilient material are secured one to the inside surface of one arm of each U-shaped retaining member and the resilient material is tensioned by drawing the retaining members over the ends of the thin sheet, sothat these ends also extend into the U-section retaining members.
  • a method of covering an annular body with a layer of sheet material comprise-s making a sleeve of the sheet material and securing the sleeve around the body under longitudinal tension by means of spaced annular retaining members.
  • the tensioning may be carried out by drawing the retaining members apart by stretching the material.
  • the sleeve may be formed by wrapping a flat piece of the material and the retaining members may be secured to the material while in a straight condition and, before the wrapping step, thus the retaining members are conveniently formed by extrusion.
  • the retaining members may be formed as annular moldings. Where the sheet material and the retaining members are each formed of a thermoplastic material they are conveniently secured together by welding.
  • the sleeve may In this case the arms of the U of each retaining member are preferably spaced apart by a dimension approximately equal to the thickness of the sheet material plus the thickness of the said portions of the annular body.
  • a canister type suction" cleaner includes a longitudinal body section. within which is mounted a motor-fan unit, the body section including an annular shell which is surrounded by a sleeve of decorative flexible material which is retained thereon in a longitudinally tensioned condition by retaining members at or adjacent each end of the sleeve.
  • the retaining members conveniently substantially surround the ends of the sleeve which may be formed by extrusion or by wrapping a flat piece of the flexible material and securing together abutting edges thereof, in which case the retaining members may be secured to or formed integrally with the material prior to the wrapping 3,303,963- Patented Feb. 14, 1967 operation. Alternatively they may be formed as moldings and secured to the sleeve.
  • the retaining members are preferably of U-section the inner arms of which are conveniently longer than the outer arms so that the inner arms form substantially air tight seals for bulkheads at the ends of the shell.
  • FIGURE 1 is a side elevational View partly in section of a suction cleaner which has secured to it a sleeve of decorative polyvinyl chloride material;
  • FIGURE 2 shows the sleeve of decorative polyvinyl chloride material having a retaining member secured to each end of it ready for assembly onto a suction cleaner shell;
  • FIGURE 3 is a sectional view on an enlarged scale of one end of the cleaner shell showing the manner in which the retaining members are employed to tension the sleeve of polyvinyl chloride and also the manner in which the retaining members provide a seal and support for other parts of the cleaner; and
  • FIGURE 4 is an enlarged sectional view of one end of the sleeve showing the manner in which the retaining members secure the sleeve to the shell, and also the manner in which the retaining member provides a decorative effect.
  • FIGURE 1 shows a conventional canister cleaner which has a longitudinally extending body 10 substantially closed by end caps 11 and 12 into which the end 13 on a partially shown flexible hose can be inserted and latched either for suction cleaning or for blowing.
  • a motor-fan-unit not shown, is mounted within the body 10.
  • a cloth filter bag 14 secured by stitching and if necessary riveting or other means to a supporting ring 15 which comp-rises a rubber molding held between a bulkhead 16 and an inner liner 17 of the end cap 12.
  • a paper filter bag 18, which can be of the disposable type, is retained within the cloth bag 14 by having its margin turned outwards and securely held between the end of the ring 15 and the liner 17.
  • the bulkhead 16 is secured to the inner wall of a generally cylindrically metallic shell 19 as shown in FIGURE 3.
  • the end cap 12 which will be referred to as the suction end cap, is pivoted to the shell 19 on its under side by a hinged connection 20 and is secured by a latch 21 on the upper side so that in order to insert or remove the filter bags the latch 21 is unlocked and the end cap 12 pivoted downwards to provide ready access to the interior of the shell 19.
  • the shell 19 is covered with a sleeve 23 of flexible re silient polyvinyl chloride formed with a decorative finish which makes it unnecessary to paint or otherwise decorate the metal shell.
  • the sleeve 23 is formed by wrapping a flat rectangular piece of material and securing overlapping longitudinal edges thereof by a high frequency sea-m weld 24 as shown in FIGURE 2. Prior to this Wrapping step the ends of the piece of material of the sleeve 23 are each inserted into a generally U-shaped polyvinyl chloride extrusion which forms a retaining member 25. The ends of the sleeve 23 are also welded by high frequency welding to the short outer arms 26 of the retaining members as shown in FIGURE 4.
  • the length of the retaining members 25 is slightly less than the width of the piece of the polyvinyl chloride material before it is wrapped in order to allow for the overlapping seam weld 24.
  • the abutting ends 27 of the retaining members 25 are not secured together since these, when in the assembled condition on the shell 19, are hidden by one of a pair of skids 30 which are secured to the shell to support it.
  • each U- shaped retaining member is considerably longer than the outer arm 26 and the two arms 26 and 32 are spaced apart by a base portion 33 to a sufiicient extent to allow the shell 19 and the sleeve 23 to be received as a close fit within the retaining members.
  • the distance between the bights 33 of the -U-shaped retaining members 25 including the attached sleeve 23, when in unstretched condition as shown in FIGURE 2, is slightly less than the length of the metal shell 19 so that when assembled on the latter the flexible material of the sleeve 33 and retaining members 25 will be tensioned longitudinally of the shell 19.
  • the bulkhead 16 is secured by rivets 35 extending through the inner arm 32 of the retaining member at that end and, in the case of the rivet 35 shown in FIGURE 3, an upstanding lug 36 is also retained to provide a catch for the toggle latch 21.
  • the resilience of the polyvinyl chloride mate-rial from which the U-shaped retaining members 25 are formed insures that a satisfactory seal is obtained between the bulkhead 16 and the inner surface of the longer arm 32 of the retaining member, so that suction pressure within the shell 19 is sealed with respect to the outer or right hand surface of the bulkhead 16 inFIGURE 3.
  • the suction end cap 12 is provided with a stepped surface 38 which, in the closed position, is received within the inner longer arm 32 of the retaining member with a suitable clearance 39.
  • the suction end cap engages the outer surface of the base portion 33 of the retaining member which is sufficiently resilient to provide :a cushioning effect and avoids any metal to metal contact.
  • each retaining member 25 during its extrusion is provided with a decorative metal aluminum layer 40 covered by a thin transparent film 41 to provide an annular decorative break between the end of the shell 19 and the end caps 11 and 12.
  • the invention provides an extremely simple method of providing an annular suction cleaner shell with a decorative plastic layer which can be retained in a tensioned condition without any recourse to glues, screws or rivets.
  • the polyvinyl chloride extrusion which forms the longitudinal retaining members 25 can be cheaply produced and these retaining members have secondary functions in the sealing against the end bulkheads such as the bulkhead 16 and in providing a resilient support for the end caps in the closed position.
  • the end cap 11 at the other end of the cleaner is similarly supported by the retaining member at that end, but
  • the sleeve may be formed as an extrusion to which the retaining members ,are secured.
  • the sleeve may be formed by wrapping a piece of material having the retaining members formed integrally therewith by extrusion or by folding over thickened edges thereof to form U-shaped edges. In these instances it would be necessary to remove a short portion of the U-section in order to permit an overlap to form the seam weld 24.
  • abutting edges of the wrapped material may be joined by a heat sealing strip.
  • a body including an elongated annular shell, a sleeve of flexible material stretched over and surrounding said shell, a retaining member at opposite ends of said sleeve forming a part thereof for attaching the latter to the opposite ends of said shell, said sleeve being of less length than said shell when said .sleeve 'is in unstretched condition separated from said shell, whereby said retaining members when attached to the opposite ends of said shell retain said sleeve on said shell in longitudinally tensioned condition and said tensioned sleeve exerts a force on said retaining members to assist in maintaining the latter attached to the opposite ends of said 'shell.
  • said retaining members of generally U-shape, the bight portion of one of said U-shaped retaining members covering an open end of said shell, and a cover for said open end of said shell engaging said bight portion of said one U-shaped retaining member to form an air seal therebetween.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US430446A 1964-02-26 1965-02-04 Covering of parts Expired - Lifetime US3303963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8044/64A GB1087634A (en) 1964-02-26 1964-02-26 Improvements relating to covering articles with sheet material

Publications (1)

Publication Number Publication Date
US3303963A true US3303963A (en) 1967-02-14

Family

ID=9844702

Family Applications (1)

Application Number Title Priority Date Filing Date
US430446A Expired - Lifetime US3303963A (en) 1964-02-26 1965-02-04 Covering of parts

Country Status (5)

Country Link
US (1) US3303963A (enrdf_load_stackoverflow)
DE (1) DE1479274B2 (enrdf_load_stackoverflow)
FR (1) FR1425723A (enrdf_load_stackoverflow)
GB (1) GB1087634A (enrdf_load_stackoverflow)
SE (1) SE322715B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379358A (en) * 1966-04-26 1968-04-23 Reynolds Metals Co Container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116913A (en) * 1982-03-19 1983-10-05 Thorn Emi Ferguson A decorative accessory for electrical apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964777A (en) * 1957-03-20 1960-12-20 Electrolux Corp Vacuum cleaner and cordwinder combination
US3002215A (en) * 1957-11-14 1961-10-03 Scott & Fetzer Co Canister vacuum cleaner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964777A (en) * 1957-03-20 1960-12-20 Electrolux Corp Vacuum cleaner and cordwinder combination
US3002215A (en) * 1957-11-14 1961-10-03 Scott & Fetzer Co Canister vacuum cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379358A (en) * 1966-04-26 1968-04-23 Reynolds Metals Co Container

Also Published As

Publication number Publication date
GB1087634A (en) 1967-10-18
DE1479274B2 (de) 1973-11-15
SE322715B (enrdf_load_stackoverflow) 1970-04-13
FR1425723A (fr) 1966-01-24
DE1479274C3 (enrdf_load_stackoverflow) 1974-06-06
DE1479274A1 (de) 1969-09-18

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