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Hand truck

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-003/02   
미국특허분류(USC) 280/04728; 280/04729
출원번호 US-0389635 (1999-09-03)
발명자 / 주소
인용정보 피인용 횟수 : 18  인용 특허 : 10
초록
▼

A collapsible hand truck for supporting large and heavy objects such as entrance way doors. The hand truck being able to adjust to varying load center of gravities, thereby allowing a single individual to handle extremely heavy loads. A tiltable main frame which can rotate about a fulcrum point allowing even the heaviest loads to be shifted from a vertical to a horizontal plane with minimal effort by the individual. The main frame is supported by a pair of struts and the length of the frame is adjustable to compensate for doors of various lengths and cen...

대표
청구항
▼

1. A door handling hand truck comprising:(a) an elongate substantially rectangular pivotable support frame having a top end and a bottom end, a top surface and a bottom surface, a lip extruding outwardly from the bottom end; (b) a pair of elongate side beams having multiple apertures at both the top and bottom ends; (c) an elongate center beam parallel and equidistantly interposed between the side beams; (d) a plurality of braces positioned perpendicularly to the beams for connecting the beams into a unitary frame structure; (e) adjustable extension beam...

이 특허에 인용된 특허 (10)

  1. Wetzel Nelson (Rte. 2 ; Box 100 Hillsboro OR 97123). Brakeable hand truck. USP1976073968974.
  2. Lewallen Charles D. (Rte. 2 ; Box 1075 Corbett OR 97109). Combination handtruck and portable work table. USP1981084284286.
  3. Sherman William S. (132 Belle Ave. Highland Park IL 60035). Combined portable table and hand truck. USP1986014565382.
  4. Pipes George R. (3635 Choke Cherry Dr. Salt Lake City UT 84109) Daley Glen L. (9870 Albury Rd. Sandy UT 84092). Hand truck. USP1994015277439.
  5. Fleming Jeffrey B. (2112 Banner Ct. Martinez CA 94553). Hand truck apparatus for lifting as well as transporting loads, such as solid core doors, and method of installing a doo. USP1988064752173.
  6. Mortenson Carl N. (Midland MI). Improvements in hand trucks with pivotally connected, spreadable, wheel-supported, auxiliary support frames. USP1993055207439.
  7. Green Thomas F. (R.R. #1 ; Box 66B Council Bluffs IA 51501). Leverage lifting cart. USP1990044919442.
  8. Ward John S. (1117 Waterford Pl. Herndon VA 22070). Multi-use hand truck. USP1993095244221.
  9. Salvucci ; Sr. Frank S. (13714 Garden Rd. Pearland TX 77581). Retractable hand truck having positive leg lock. USP1995085445399.
  10. Bethlen Farkas (Richmond EN). Stretcher trolleys. USP1977054023849.

이 특허를 인용한 특허 피인용횟수: 18

  1. Gedeon-Janvier, Maxime. Adjustable and collapsible hand truck with lifting apparatus. USP2016049321471.
  2. Kane,Gregory. Auxiliary wheel set (kick-back) adapter for two-wheeled hand truck. USP2006087083174.
  3. Silva, Antonio. Board handling apparatus. USP20180710017199.
  4. Hronyetz, Albert L.. Carrier for transporting bulky, relatively heavy objects. USP2014098820756.
  5. Katz, Amir. Collapsible clamping work table. USP2009097588255.
  6. Josephsen, Greg. Convertible cart device. USP20181210160467.
  7. Su, Chung-Hsiu. Convertible hand truck. USP2017069688298.
  8. Nguyen,Trong D.; Smith,Cliff L.. Door positioning device. USP2008087410180.
  9. Belotti, John C.; Shellenbarger, Stuart J.; Winters, Chad D.; Guoan, Christopher J.. Hand truck. USP2018059969411.
  10. Plummer, Allan. Hand truck. USP201407D709664.
  11. McKinnon, Peter Rodney. Handtruck. USP2013108556279.
  12. Lowe, Archie. Multipurpose work site utility carrier. USP2010107815215.
  13. Lowe,Archie. Multipurpose work site utility carrier. USP2007127306245.
  14. Rene, Wayne. Stair-climbing hand truck. USP2017059643639.
  15. Smith, Timothy; Hill, James M.. Transport cart with tilting load carrier. USP2015049004509.
  16. Burke, John T.. Transportation and installation assist device for at least one pre-cast concrete tilt panel. USP2005036869261.
  17. McKinnon, Peter R.; Taylor, Gerry. Wheel. USP201712D804766.
  18. McKinnon, Peter R.; Taylor, Gerry. Wheel frame. USP2016029248698.

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