US3239243A - Locking means for telescopically fitted members - Google Patents

Locking means for telescopically fitted members Download PDF

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Publication number
US3239243A
US3239243A US269618A US26961863A US3239243A US 3239243 A US3239243 A US 3239243A US 269618 A US269618 A US 269618A US 26961863 A US26961863 A US 26961863A US 3239243 A US3239243 A US 3239243A
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US
United States
Prior art keywords
wall section
tubular member
zone
longitudinally extending
outer tubular
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
US269618A
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English (en)
Inventor
Grellsson Karl Gustav
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.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Application granted granted Critical
Publication of US3239243A publication Critical patent/US3239243A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
    • F16L37/04—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
    • F16L37/05—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity tightened by the pressure of a mechanical organ
    • 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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/242—Hose or pipe couplings
    • 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
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/69—Redundant disconnection blocking means
    • F16B2200/73—Cam locks or thread locks
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/913—Self-expanding anchor
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32467—Telescoping members

Definitions

  • Another object of my invention is to provide an improved locking means between an outer hollow member and an inner member telescopically fitted therein in such manner that a force is transmitted directly through the wall of the outer member to firmly clamp the members together.
  • I accomplish this by providing an outer hollow member having a longitudinally extending zone including a wall section which is bendable and bodily movable inward responsive to force applied thereto at its outer surface, and mechanism for effectively applying such force to the zone of the hollow member at such wall section.
  • FIG. 1 is a side elevational view, partly broken away and in section, of a suction cleaner embodying my invention
  • FIG. 2 is an enlarged longitudinal sectional view of parts shown at the front end of the suction cleaner illustrated in FIG. 1;
  • FIG. 3 is a front elevational view of the suction cleaner shown in FIG. 1;
  • FIG. 4 is a fragmentary exploded perspective view of parts shown in FIG. 2;
  • FIGS. 5 and 6 are fragmentary perspective views illustrating different positions of parts shown in FIGS. 1 to 4.
  • FIGS. 7 and 8 are fragmentary perspective views similar to FIGS. 5 and 6, respectively, illustrating a modification of the invention.
  • my invention as applied to a portable tank-type suction cleaner having a casing 10 which is provided with a handle 11.
  • the front end 12 of the casing 10 is provided with a hollow tubular member 14 which constitutes the air inlet of the cleaner and to which a hollow tubular member 15 is adapted to be connected, the outer and inner tubular members 14 and 15 being formed to fit telescopically one within the other.
  • the inner tubular member 15 may form part of a wand having an outer free end (not shown) to which a suitable cleaning appliance may be connected and through which air is drawn into the interior of the casing 19 by a motor-fan unit (not shown) therein. Dust entrained in air during a cleaning operation is separated from the air when the latter passes through a dust collector 16, and air from which dust has been removed passes through the dust collector and is discharged through an air outlet 17 at the rear end of the casing 1t 3,239,243 Patented Mar. 8, 1966 As shown in FIG. 2, the inner end zone 14a of the outer tubular member 14 is formed with a tapered bore, and the remainder thereof, including an outer longitudinally extending zone 14b which projects outward from the end wall 12, is formed with a cylindrical bore.
  • the inner tubular member 15 includes a tapered end zone 15a, and the remainder thereof, including the zone 15b disposed within the zone 14b, of the outer tubular mem ber 14, is of cylindrical form. Hence, when the inner tubular member 15 is inserted within the outer tubular member 14, the tapered bore of the inner zone 14a is in the path of movement of the inner tapered zone 15a of the inner tubular member 15 and serves as a stop to limit axial inward movement of the inner tubular member Within the outer tubular member. After the inner tubular member 15 is telescopically fitted within the outer tubular member 14 in the manner just described and shown in FIG. 2, the tubular members may be clamped together by locking means.
  • At least the longitudinally extending zone 14b of the outer tubular member 14 is formed of elastomeric material and includes an axially extending first wall section 14d and an axially extending second wall section which bridges the first wall section 14d and is bendable and bodily movable inward responsive to force applied thereto at its outer surface, and bodily inward movement of the bendable wall section 14c against the outer surface of the zone 15b of the inner tubular member 15 to firmly clamp the tubular mem-be rs together is effected by mechanism 18 mounted on the end wall 12 of the casing 10.
  • the mechanism 18 includes a cam element 19 having an arm 20 extending therefrom for manually moving the cam element between inoperative and operative positions shown in FIGS. 5 and 6, respectively.
  • the cam element 19 includes a front end wall having a rim 21 and a hub 22 extending axially therefrom which are spaced from one another and define a groove 23 of annular form.
  • the end -wall 12 of the casing 10 is provided with a part 24 which projects outward from the end wall and is of annular form.
  • the cam element 319 is mounted on the end wall 12 with the projecting part 24 extending into the groove 23 and forming a circular track on which the cam element is rotatable about an axis parallel to the axis of the outer tubular member 14.
  • the end wall 12 is formed with an opening 25 which extends theretbrough and is defined in part by the annular-shaped projecting part 24.
  • the hub 22 includes a rearwardly extending portion 22a which extends axially through the end wall opening 25.
  • the hub 22 and its outer projecting portion 22a are formed with an axially extending opening 22b, and the outer portion 22a, which may be referred to as a hollow sleeve, is slotted axially to provide a plurality of elongated fingers 26 having outwardly extending hooks 26a at their rear ends.
  • the hooks 26a function as radially movable catches which are arranged to engage a shoulder or notch 27 formed about the opening 25 at the rear surface of the end wall 12 of the casing.
  • the cam element 19 When the cam element 19 is mounted on the end wall 12 with the hollow sleeve 22b extending through the opening 25, the fingers 26 resiliently flex toward one another and, after passing through the wall opening 25, snap radially outward with the hooks 26a engaging the shoulder 27 to prevent withdrawal of the cam element 19.
  • the cam element 19 is axially immovable along the axis about which it is rotatable.
  • a pin 28 is introduced into the axially extending opening 22b of the hollow sleeve 2 2a and hub 22 and frietionally held therein to maintain the fingers 26 in their radially outward position with the hooks 26a in engagement with the shoulder or notch 27.
  • the cam element 19 is rotatable on the circular track 24 between inoperative and operative positions shown in FIGS. 5 and 6, respectively.
  • the cam element 19 does not exert force against the outer surface of the zone 14b of the outer tubular member 14, and the inner tubular member 15 can be readily inserted into and withdrawn from the outer tubular member 14.
  • the cam element 19 due to its eccentric shape, is rendered operable to exert force against the outer surface of the bendable wall section 140 to bodily move the latter against the outer surface of the zone 15b of the inner wall member 15 and firmly clamp the tubular members together.
  • the thickness of the wall section 140 desirably is less than the thickness of the wall section 14d of the outer zone 14b at regions adjacent to and abutting the wall section 140. This may be accomplished by removing material from the outer surface of the outer zone 14b at the wall section 14c so that its outer surface 14c will be essentially flat, as shown in FIGS. 5 and 6.
  • the section 14c readily responds to the application of such inward force and is easily bent and deformed while the wall section 14d adjacent to the wall section 140 is essentially unaffected by the application of the force, whereby the wall section 140 is bodily moved inward, as indicated at 29 in FIG. 6, to effectively clamp the tubular members together.
  • At least the outer zone 14b of the outer tubular member 14 is formed of a suitable elastomeric material which will function in the manner described above when force is applied to the outer surface of the wall section 140 by the cam element 19 and its operating arm 20 which, in effect, constitutes a force-multiplying mechanism.
  • the elastomeric material may comprise any suitable resilient substance such as natural or synthetic rubber or other rubber-like plastics.
  • the inner tubular member 15 may be formed of elastomeric material or from a suitable metal, such as steel or aluminum, for example.
  • FIGS. 7 and 8 I have shown a modification of my invention, in which parts similar to those shown in the embodiment just described are referred to by the same reference numerals.
  • the outer zone 114b of the outer tubular member 114 is formed with cuts or slits 30 at the side wall section 1140 which extend axially of the outer tubular member.
  • the cuts or slits 30 are essentially gashes which, after being formed, have no visible or only narrow openings and may extend to the edge of the outer tube zone. Hence, an airtight joint will be obtained when the outer tubular member 114 is clamped to an inner tubular member inserted therein in spite of the cuts or slits 30 in the outer tubular member 114.
  • the longitudinally extending zone A includes a first axially extending wall section 14d which extends transversely of the axis of the outer member 14 through a first angle of less than 360 and a seecond axially extending wall section 14c which extends transversely of the axis of the outer member 14 through a second angle which is less than the first angle and connects and bridges the first section, the first and second axially extending wall sections 14d and 140, respectively, of the longitudinally extending zone A forming integrally connected parts of the outer tubular member 14.
  • the first axially extending wall section 14d has curved outer and inner surfaces 14d and 14d.
  • the second wall section is of less thickness than the first wall section 14d and has an essentially flat outer surface 14c which merges with the curved outer peripheral surface 14d of the first Wall section 14d.
  • the second wall section 14c is bendable and bodily movable inward responsive to force applied thereto at its outer surface 140'.
  • a portion 12a of the front end wall 12 of the casing 10 serves as a support fixed to a region of the outer tubular member 14 which is axially displaced from the longitudinally extending zone A thereof.
  • the mechanism or means 18 mounts the cam element 19 on the support 12a for angular movement thereon adjacent to the outer surface of the outer tubular member 14 between the inoperative and operative positions shown in FIG. 5 and FIG. 6, respectively.
  • the cam element 19 moves between its inoperative and operative positions in a plane which is transverse to the axis of the outer tubular member 14 and intersects the longitudinally extending zone A thereof.
  • the cam element 19 in its operative position shown in FIG.
  • An outer hollow tubular member having an axis and an inner member which telescopically fits within the outer tubular member, the outer tubular member comprising a longitudinally extending zone which includes a first axially extending wall section which extends transversely of the axis of the outer member through a first angle of less than 360 and a second axially extending wall section which extends transversely of the axis of the outer member through a second angle which is less than the first angle and connects and bridges the first axially extending wall section, said first and second wall sections of said longitudinally extending zone forming integrally connected parts of said outer tubular member, the second wall section being bendable and bodily movable inward responsive to force applied thereto at its outer surface, a support fixed to a region of the outer tubular member which is axially displaced from said longitudinally extending zone thereof, an element, means for mounting said element on said support for angular movement thereon adjacent to the outer surface of the outer tubular member between inoperative and operative positions in a
  • the first axially extending wall section of said longitudinally extending zone of the outer tubular member comprises a wall having curved inner and outer surfaces, the axially extending second wall section of said longitudinally extending zone comprising a wall of less thickness than the first wall section, and the second wall section having a substantially flat outer surface which merges with the curved peripheral outer surface of the first wall section.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Connecting Device With Holders (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Electric Vacuum Cleaner (AREA)
US269618A 1962-04-05 1963-04-01 Locking means for telescopically fitted members Expired - Lifetime US3239243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE378462 1962-04-05

Publications (1)

Publication Number Publication Date
US3239243A true US3239243A (en) 1966-03-08

Family

ID=20262853

Family Applications (1)

Application Number Title Priority Date Filing Date
US269618A Expired - Lifetime US3239243A (en) 1962-04-05 1963-04-01 Locking means for telescopically fitted members

Country Status (5)

Country Link
US (1) US3239243A (enExample)
DE (1) DE1265930B (enExample)
DK (1) DK111651B (enExample)
GB (1) GB1022573A (enExample)
NL (2) NL122507C (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935787A (en) * 1974-06-19 1976-02-03 Illinois Tool Works Inc. Door handle anchor
US4435105A (en) 1982-02-22 1984-03-06 Heath Manufacturing Company Adjustable lock arrangement and method for making same
US4683610A (en) * 1985-05-02 1987-08-04 Universal Extension Corporation Handle extension
US4715084A (en) * 1984-09-17 1987-12-29 Progress-Elektrogeraete Mauz & Pfeiffer Gmbh & Co. Hand vacuum cleaner
US11111123B2 (en) 2019-01-25 2021-09-07 Christopher Silva Lifting device and related methods

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US652644A (en) * 1900-02-28 1900-06-26 Ross Attachment And Machine Company Split bolt.
US1174288A (en) * 1913-07-08 1916-03-07 Mortimer C Rosenfeld Clamping device.
GB169257A (en) * 1920-06-21 1921-09-21 Ernest James Stockwell An improved method of securing metallic contact or electrical continuity between unscrewed tubes and fittings in conduit wiring systems
US1918519A (en) * 1930-07-16 1933-07-18 Clements Mfg Co Vacuum cleaner
US2120184A (en) * 1937-12-16 1938-06-07 Oliver W Mojonnier Pipe joint or coupling
US2793055A (en) * 1952-08-02 1957-05-21 Lewyt Corp Telescopic coupling with cam latch means
US2817548A (en) * 1954-10-15 1957-12-24 Rosenkaimer Gmbh Clamping device for garden sunshades

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE63516C (de) * A. REBER in Basel, Utengasse 6 Klemmhülse mit excentrischem Stellring
DE861320C (de) * 1944-05-21 1952-12-29 Eisemann G M B H Klemmverbindung fuer die loesbare Befestigung zweier ineinander-gesteckter Koerper, insbesondere Klemmverbindung zum wahlweisen Einstellen der Beinlaenge bei Stativen
US2849249A (en) * 1955-10-20 1958-08-26 Annette E Fridolph Clamping device
DE1717500U (de) * 1955-11-03 1956-02-23 Brueder Wuester Vorrichtung zur gegenseitigen festklemmung von ineinanderschiebbaren rohren, insbesondere der stockrohrteile von gartenschirmen od. dgl.
DE1826445U (de) * 1960-11-24 1961-02-09 Linhof Nikolaus Karpf K G Prae Klemmvorrichtung fuer teleskopartig ausziehbare rohre.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US652644A (en) * 1900-02-28 1900-06-26 Ross Attachment And Machine Company Split bolt.
US1174288A (en) * 1913-07-08 1916-03-07 Mortimer C Rosenfeld Clamping device.
GB169257A (en) * 1920-06-21 1921-09-21 Ernest James Stockwell An improved method of securing metallic contact or electrical continuity between unscrewed tubes and fittings in conduit wiring systems
US1918519A (en) * 1930-07-16 1933-07-18 Clements Mfg Co Vacuum cleaner
US2120184A (en) * 1937-12-16 1938-06-07 Oliver W Mojonnier Pipe joint or coupling
US2793055A (en) * 1952-08-02 1957-05-21 Lewyt Corp Telescopic coupling with cam latch means
US2817548A (en) * 1954-10-15 1957-12-24 Rosenkaimer Gmbh Clamping device for garden sunshades

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935787A (en) * 1974-06-19 1976-02-03 Illinois Tool Works Inc. Door handle anchor
US4435105A (en) 1982-02-22 1984-03-06 Heath Manufacturing Company Adjustable lock arrangement and method for making same
US4715084A (en) * 1984-09-17 1987-12-29 Progress-Elektrogeraete Mauz & Pfeiffer Gmbh & Co. Hand vacuum cleaner
US4683610A (en) * 1985-05-02 1987-08-04 Universal Extension Corporation Handle extension
US11111123B2 (en) 2019-01-25 2021-09-07 Christopher Silva Lifting device and related methods

Also Published As

Publication number Publication date
NL122507C (enExample)
DE1265930B (de) 1968-04-11
NL291130A (enExample)
GB1022573A (en) 1966-03-16
DK111651B (da) 1968-09-23

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