Hand-held powered suction device

{
  "publication_number": "US8122565B2",
  "country": "US",
  "kind": "B2",
  "title": "Hand-held powered suction device",
  "abstract": "To obtain a hand-held powered suction device, which secures a high suction performance by a lightweight fan while preventing a blade of the fan from being damaged or being broken due to a sucked object. Forming an air intake opening along a driving axis of a fan in a portable-type fan case and providing a fan protection member to be rotated at an upstream side in an air intake direction of the fan within the intake opening being attached so as to be integrally rotated with the driving axis, a shock absorbing surface that is perpendicular in an air intake direction of the intake opening is formed on the fan protection member.",
  "claims": [
    "1. A hand-held powered suction device which comprises: a fan case and a suction pipe having a base part at an end thereof, said fan case defining a connection part for mounting said base part of said suction pipe and a peripheral air discharge opening, said suction pipe defining an air intake passage into said fan case, said air intake passage defining a central axis, a fan mounted in said fan case having a drive shaft aligned with said central axis of said air intake passage, and a fan protection member which includes a shock-absorbing part having a shock-absorbing surface and an elongated support part, said elongated support part being connected to said drive shaft to space said shock-absorbing part from said fan and locate said shock-absorbing surface within said connection part of said fan case, said shock-absorbing part being oriented perpendicularly to said central axis, and said fan protection member including an opening aligned with said central axis for air flow therethrough.",
    "2. The suction device according to claim 1, wherein the fan protection member has an outer shape of an oval figure for the air intake opening having a circle opening.",
    "3. The suction device according to claim 1, wherein the fan protection member is provided with a crushing part that protrudes to the upstream side in the air intake direction from the shock absorbing surface.",
    "4. The suction device according to claim 1, wherein the shock-absorbing part of the fan protection member includes a central opening.",
    "5. The suction device according to claim 4, wherein the support part has a support leg for supporting the outer peripheral part of the shock absorbing part and forming a crushing part by protruding the support leg to the upstream side in the air intake direction from the shock absorbing surface.",
    "6. The suction device according to claim 4, wherein the support part has a support leg for supporting the peripheral edge of the opening and forms a crushing part by protruding the support leg to the upstream side in the air intake direction from the shock absorbing surface.",
    "7. The suction device according to claim 1, wherein the support part is fitted into the center part of a cutter.",
    "8. The suction device according to claim 1, wherein the fan protection member includes crushing parts on the shock absorbing surface.",
    "9. The suction device according to claim 1, wherein the fan protection member is generally T-shaped in cross section."
  ],
  "description_excerpt": "1. Field of the Invention\n\nThe present invention relates to a hand-held suction device, which is driven by a power.\n\n2. Description of the Related Art\n\nA hand-held suction device to be driven by a power has been known, which draws a garden debris such as a falling leaf and a dust by using a suction pressure of a centrifugal blower to collect the debris into a bag or the like that is attached to a blowing tip. FIG. 1 is an explanatory view showing an example of a conventional hand-held powered suction device (refer to the Japanese Patent Application Laid-Open No. 2000-179497; FIG. 1A is an external view and FIG. 1B is a front view of a fan case).\n\nIn this conventional example, a main body 1 is integrally formed by a motor 11 for driving a fan 10, a recoil starter 12 for starting, a fuel tank 13, and a fan case 14 or the like. A suction pipe 2 is detachably coupled with an air intake opening 14 A of a fan case 14 and a blowing pipe 3 is detachably coupled with an air blowing opening 14 B of the fan case 14. Then, dust bag having suitable ventilation property is attached to a blowing end of the blowing pipe 3. The example shown in the drawing is a hand-held apparatus and handles 15 and 16 griped by an operator are mounted on the main body 1. In addition, in the air intake opening 14 A of the fan case 14, a cutter 5 is provided, which is placed on a driving axis of the fan 10 to be rotated with the fan 10.",
  "cpc": [
    "F04D 29/701",
    "A01G 20/47",
    "F04D 27/008",
    "F04D 29/703"
  ],
  "ipc": [
    "F04D 29/70",
    "A47L 5/24"
  ],
  "assignees": [
    "Yamabiko Corp"
  ],
  "inventors": [
    "Yoshiki Nakayama",
    "Masaki Takeda",
    "Junichi Akaike"
  ],
  "filing_date": "2008-07-08",
  "publication_date": "2012-02-28",
  "grant_date": "2012-02-28",
  "priority_date": "2007-11-01",
  "family_id": "40586631",
  "cited_by_count": 0,
  "citations": [
    "US4325163A",
    "US5245726A",
    "US5794864A",
    "JP2000179497A"
  ]
}