US2974345A - Collapsible support for an ambulatory appliance - Google Patents

Collapsible support for an ambulatory appliance Download PDF

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Publication number
US2974345A
US2974345A US754033A US75403358A US2974345A US 2974345 A US2974345 A US 2974345A US 754033 A US754033 A US 754033A US 75403358 A US75403358 A US 75403358A US 2974345 A US2974345 A US 2974345A
Authority
US
United States
Prior art keywords
frame
appliance
latch
lever
pad
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
US754033A
Other languages
English (en)
Inventor
Don C Krammes
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
Priority to US754033A priority Critical patent/US2974345A/en
Priority to ES0251198A priority patent/ES251198A1/es
Priority to GB26629/59A priority patent/GB928047A/en
Priority to FR802335A priority patent/FR1242912A/fr
Priority to DEH37128A priority patent/DE1139617B/de
Priority to CH362186D priority patent/CH362186A/fr
Application granted granted Critical
Publication of US2974345A publication Critical patent/US2974345A/en
Priority to MY196439A priority patent/MY6400039A/xx
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
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • 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
    • A47L5/24—Hand-supported suction cleaners
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2852—Elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters or nozzles

Definitions

  • the present invention relates to a wheeled support for an ambulatory appliance and more particularly to a support movable to collapsed and projected positions relative to the body of the appliance.
  • An object of the invention is to provide an appliance with a motor switch controlled by movement of, the support toward its projected position. Another object is to provide an appliance with a latching device to maintain the support in projected position, and latch releasing means actuated by applying a force in the same direction as movement of the support to its projected position for disconnecting the latching device and permit movement of the support in a reverse direction to its collapsed position. Another object is to provide the aforesaid appliance with a motor switch controlled by movementof the support in the same" direction to its projected posi tion relative to the appliance.
  • Figure 1 is a side elevational view of a scrubbing appliance embodying the invention
  • Figure 2 is a sectional view of the support in collapsed position relative to the appliance
  • Figure 3 is a sectional view showing the support locked in projected position
  • Figure 4 is a similar view but showing the support in position to operate the switch on the appliance.
  • the invention herein disclosed is embodied in a surface cleaning appliance comprising a nozzle 10, ahousing 11 enclosing a motor-fan unit 12, a liquid container '13, a combined separator and non-return water valve 14, and a handle 15on which is mounted a control lever 16, all of which are fully described and claimed in my copending application Serial No. 754,093, filed concurrently herewith. v
  • a casting 17 forms part of the body of the appliance and is provided with a pair of rearwardly projecting lugs 18 in which is mounted a pin 19 rotatably supporting a wheeled frame 20.
  • the frame 20 has a top wall 21, depending front wall 22, an arcuate rear wall 23 and a pair of spaced side walls 24. Supported in the side walls 24 of the frame 20 adjacent the rear wall 23 is a shaft 25 on the opposite ends of which are mounted a supporting wheel 26.
  • a torsion spring 27 is arranged about the pivot pin 19 and has one end 28 formed in substantially U-shape to clear the frame front wall 22 and is secured to the body of the appliance, theother end 29 of the spring bears against the frame top wall 21, and the spring 27 at all times biases the frame 20 in a counterclockwise direction to its collapsed position relative to the appliance as shown in Figure 2.
  • the rear wall 23 of the supporting frame 20 is provided with a pad 30 to receive a force applied by the operators foot to move the supporting frame from its collapsed position in Figure 2 to the projected position in Figure 3.
  • a latching device is provided to lock the supporting frame 20 in projected position relative to the appliance and includes a latch lever 31 and a latch receiving rod 'ice Patented Mar. 14, 1961 32, the latter being mounted on the spaced side walls 24 of the supporting frame 20.
  • the latch lever 31 has a panel 33 from which upwardly projects spaced side walls 34 each formed at their inner end with an car 35 pivotally supported on a pin 36 mounted in a pair of lugs 37 secured to the casting 17.
  • the forward end of each side wall 34 is provided with a substantially U-shaped recess 38, the lower leg 39 of which extends beyond the upper leg 40 and the recesses 38 are adapted to receive the latch rod 32.
  • a torsion spring 41 is arranged about the pivot pin 36 and at all times urges the latch lever 31 to rotate in a counterclockwise direction to its collapsed position shown in Figure 2.
  • a latch releasing member 42 Upstanding from the panel 33 is a latch releasing member 42 formed by cutting out a portion of the panel 33 and bending the portion upwardly.
  • the releasing member 42 is positioned inwardly of the ends of the lower arms 39 of the recesses 38 to prevent the latch rod 32 sliding off the ends of the arms 39.
  • the upper end of the member 42 is provided with a pad 43 which projects through an opening 44 in the top wall of the supporting frame 20.
  • the pad 43 is adapted to receive a downward force from the operators foot to disengage the recesses 38 from the latch rod 32 whereby the wheel supporting frame 20 is rotated by the torsion spring 27 to its collapsed position.
  • a push-push switch 45 for the motor of the motor-fan unit 12 is mounted on a bracket 46 secured to the casting 17, and the switch is arranged within the housing 12 at one side of the latch lever 31.
  • An operating lever 47 for the switch 45 is provided at one end with a pair of spaced cars 48 which are loosely mounted on the pivot pin 19 and the other end of the lever has a portion 49 adapted to engage the switch plunger 50.
  • the pivoted end of the lever 47 has a straight surface 51 which is engaged by the top wall 21 of the supporting frame 20 to rotate the lever 47 against the plunger 50 and depress 'the latter to control operation of the switch as shown in Figure 4.
  • the switch lever 47 pivots freely on the pin 19 and its rotation in a counterclockwise direction is limited by engaging a projecting wall 52 of the housing 11.
  • the wheel frame 20 When it is desired to propel the appliance over a surface to be cleaned the wheel frame 20 is moved from its collapsed'position in Figure 2 to its projected position in Figure 3. In order to shift the frame 20 to its projected position the operator places his foot on the pad 30 and exerts a downward force which moves the frame 20 in a clockwise direction about the pivot pin 19 against the force of the torsion spring 27.
  • the latch rod 32 engages the upper surfaces 53 of the latch lever 31 and rotates the latter about its pivot 36, and the pivotal axis of the frame 20 being olfset with respect to the pivotal axis of the latch lever 31 causes the latch rod to move out of engagement with the latch lever surfaces 53 onto the lower arms 39 of the latch recesses 38 at which time the operator removes his foot from the pad 30 and then torsion spring 41 rotates the latch lever 31 in a counterclockwise direction to seat the latch rod 32 in the recesses 38 and lock the frame 20 in projected position relative to the appliance as shown in Figure 3.
  • the motor of the motor-fan unit 12 is energized by the operator applying foot pressure on the frame pad 30 to latch rod 32 is displaced along the lower arms 39 of the recesses 38, but is limited in such movement by engaging the latch release lever 42, as shown in Figure 4.
  • the latch lever 31 maintains the latch rod 32 in operative position for re-engagement with. the walls of the "recesses .upon removing the force applied to the pad 30 the latch rod 32 will be seated in the recesses 38 by counterclockwise rotation of the latch lever 31 to lock the frame 20 in projected position.
  • the torsion spring 41 returns the latch lever 31 to its collapsed position shown in Figure 2 and such movement is limited by the pad 43 abutting the body of the applicancc.
  • an ambulatory appliance of the type to be propelled along a surface comprising a body, a motor for the appliance mounted on said body, a frame pivotally mounted on said body for movement between collapsed 38 when the force applied to the pad 30 is removed allow- 4 r t and projected positions relative to said body, said frame adapted to receive an operator applied force to move said frame to its said projected position, wheel means on said frame for supporting the appliance on a surface along which the appliance is propelled when said frame is in its projected position, a switch mounted on said body and in circuit with said motor, and switch operating means movable by said frame to close said switch upon movement of said frame beyond said projected position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Mechanical Control Devices (AREA)
  • Handcart (AREA)
  • Harvester Elements (AREA)
US754033A 1958-08-08 1958-08-08 Collapsible support for an ambulatory appliance Expired - Lifetime US2974345A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US754033A US2974345A (en) 1958-08-08 1958-08-08 Collapsible support for an ambulatory appliance
ES0251198A ES251198A1 (es) 1958-08-08 1959-07-31 Perfeccionamientos en aparatos eléctricamente accionados controlados por un interruptor y montados sobre ruedas
GB26629/59A GB928047A (en) 1958-08-08 1959-08-04 Improvements relating to electrically operated appliances
FR802335A FR1242912A (fr) 1958-08-08 1959-08-07 Perfectionnements aux appareils domestiques munis de roulettes et actionnés électriquement
DEH37128A DE1139617B (de) 1958-08-08 1959-08-07 Elektrisch betriebenes Bodenreinigungsgeraet
CH362186D CH362186A (fr) 1958-08-08 1959-08-07 Appareil de nettoyage
MY196439A MY6400039A (en) 1958-08-08 1964-12-31 Improvements relating to electrically operated appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US754033A US2974345A (en) 1958-08-08 1958-08-08 Collapsible support for an ambulatory appliance

Publications (1)

Publication Number Publication Date
US2974345A true US2974345A (en) 1961-03-14

Family

ID=25033213

Family Applications (1)

Application Number Title Priority Date Filing Date
US754033A Expired - Lifetime US2974345A (en) 1958-08-08 1958-08-08 Collapsible support for an ambulatory appliance

Country Status (7)

Country Link
US (1) US2974345A (fr)
CH (1) CH362186A (fr)
DE (1) DE1139617B (fr)
ES (1) ES251198A1 (fr)
FR (1) FR1242912A (fr)
GB (1) GB928047A (fr)
MY (1) MY6400039A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673592A (en) * 1970-08-21 1972-06-27 Whirlpool Co Lockout for portable appliance with caster jack mechanism
US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch
US5311638A (en) * 1991-07-15 1994-05-17 The Regina Company Cleaning device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100539757B1 (ko) * 2003-12-24 2006-01-10 엘지전자 주식회사 업라이트형 진공청소기의 파워 스위치 장치

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1508134A (en) * 1924-01-30 1924-09-09 Thomas B Barnett Roller attachment for rocking-chairs
US1687283A (en) * 1926-06-18 1928-10-09 Deutscher William Floor cleaner
US2079293A (en) * 1933-06-26 1937-05-04 Ind Improvements Inc Suction sweeper
US2289711A (en) * 1939-11-13 1942-07-14 James B Kirby Suction cleaner
US2420066A (en) * 1941-08-22 1947-05-06 Aeronautical & Mechanical Inve Landing gear control and indicating arrangement
US2478995A (en) * 1945-04-30 1949-08-16 United Shoe Machinery Corp Gun carriage
US2590152A (en) * 1945-01-16 1952-03-25 John T Kilbride Vacuum cleaner with sterilizing means
US2675246A (en) * 1951-09-20 1954-04-13 Advance Machine Co Wheel raising and lowering mechanism for floor polishing machines and the like
US2688671A (en) * 1948-06-17 1954-09-07 Hoover Co Pedal operated switch structure for ambulatory floor treating tools

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1508134A (en) * 1924-01-30 1924-09-09 Thomas B Barnett Roller attachment for rocking-chairs
US1687283A (en) * 1926-06-18 1928-10-09 Deutscher William Floor cleaner
US2079293A (en) * 1933-06-26 1937-05-04 Ind Improvements Inc Suction sweeper
US2289711A (en) * 1939-11-13 1942-07-14 James B Kirby Suction cleaner
US2420066A (en) * 1941-08-22 1947-05-06 Aeronautical & Mechanical Inve Landing gear control and indicating arrangement
US2590152A (en) * 1945-01-16 1952-03-25 John T Kilbride Vacuum cleaner with sterilizing means
US2478995A (en) * 1945-04-30 1949-08-16 United Shoe Machinery Corp Gun carriage
US2688671A (en) * 1948-06-17 1954-09-07 Hoover Co Pedal operated switch structure for ambulatory floor treating tools
US2675246A (en) * 1951-09-20 1954-04-13 Advance Machine Co Wheel raising and lowering mechanism for floor polishing machines and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673592A (en) * 1970-08-21 1972-06-27 Whirlpool Co Lockout for portable appliance with caster jack mechanism
US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch
US5311638A (en) * 1991-07-15 1994-05-17 The Regina Company Cleaning device

Also Published As

Publication number Publication date
CH362186A (fr) 1962-05-31
ES251198A1 (es) 1959-12-16
FR1242912A (fr) 1960-10-07
DE1139617B (de) 1962-11-15
GB928047A (en) 1963-06-06
MY6400039A (en) 1964-12-31

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