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특허 상세정보

Hand truck

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-003/02   
미국특허분류(USC) 280/047.29; 280/047.28; 280/030; 280/047.18; 280/047.2
출원번호 US-0981041 (2004-11-05)
발명자 / 주소
인용정보 피인용 횟수 : 12  인용 특허 : 57
초록

A hand truck includes a main frame, a movable frame pivotally connected with the main frame, a wheel set, and a handle able to be connected with the main frame with its height adjustable or to be connected with a handle receiving short tube fixed upright on the main frame in case of transforming the two wheeled hand tuck, two wheel supporters fixed under the main frame for additionally combining two independent wheels for transforming the two wheeled hand truck into a four wheeled one.

대표
청구항

1. A hand truck comprising:a main frame consisting of two vertical side rods, two intermediate support rods positioned in parallel to and between said vertical side rods, an upper side rod combined with said two side rods and said two support rods, and an L-shaped elongate plate welded tightly with a lower end of said two vertical side rods to form a lower side of said main frame, said two vertical side rods respectively provided with a position hole near its upper end;a wheel set consisting of two wheels rotatably combined with two ends of an axle and w...

이 특허에 인용된 특허 (57)

  1. Jack Robert F. ; Forman Eric L. ; Humphries James E. ; Lent Gary K.. Air driven pumps and components therefor. USP2001076257845.
  2. Jack Robert F. ; Forman Eric L. ; Humphries James E. ; Lent Gary K.. Air driven pumps and components therefor. USP2000116142749.
  3. Watanabe Akimasa,JPX ; Arai Kazushige,JPX. Air separation plants. USP2000086101840.
  4. Sugitani Nobuyoshi,JPX ; Nonomura Yutaka,JPX. Angular velocity detecting apparatus. USP2000106125701.
  5. Beurrier Henry Richard (817 Old Chester Rd. Far Hills NJ 07931). Apparatus for poling a piezoelectric actuator. USP1997095663606.
  6. Chen Yun-Tien (Hsinchu TWX) Cheng Syh-Yuh (Taichung TWX) Liao Shu-Fen (Yun Lin TWX). Apparatus for poling a piezoelectric ceramic. USP1991095045747.
  7. Min Chun-Gi (Seoul KRX) Jeong Su-yeol (Euiwang KRX). Automatic focusing apparatus for a video camera and the method thereof. USP1992105157435.
  8. Goo Bonjeong (Kyeongsangnam-do KRX). Automatic zoom camera and driving method therefor. USP1994105357308.
  9. Davoodi Hamid ; Just Frederick A. ; Saffar Ali ; Noori Mohammad N.. Building system using shape memory alloy members. USP2001016170202.
  10. An Byeong-eui (Seoul KRX). Camera moving apparatus. USP1992025091781.
  11. Zumeris Jona (Nesher ILX). Ceramic motor. USP1995095453653.
  12. Miller Walter A. (5687 Pleasant Ave. Northridgeville OH 44039). Convertible bulk hand truck and table top. USP1996075536034.
  13. Malone, Jr., William E.. Convertible hand cart with improved locking means. USP2003076588775.
  14. Dahl Gary-Michael (8300 Sands Point Dr. #903 Houston TX 77036). Convertible transport cart. USP1995125476282.
  15. Dahl Gary-Michael (8300 Sands Pointe Dr. #903 Houston TX 77036). Convertible transport cart. USP1993075228716.
  16. Horn Stuart B. (Fairfax VA) Asher Mark S. (Woodbridge VA) Dunmire Howard L. (Stafford VA). Cryogenic cooler with annular regenerator and clearance seals. USP1981074277948.
  17. Kim, Sung Dae. Damper wire for shadow mask in flat Braun tube. USP2003026525456.
  18. Stauffer Norman L. (Englewood CO). Distance determining and automatic focusing apparatus. USP1976053958117.
  19. Wrobel Leslie P.,CAX ; Zimmerman Jerrold ; Kunz Kenneth M.,CAX. Focus mechanism for varifocal lens. USP1999045894371.
  20. Langenfeld, Christopher C.; Gurski, Thomas Q.; Smith, III, Stanley B.. Folded guide link drive improvements. USP2003076591608.
  21. Stahler ; Sr. Richard D.. Hand truck convertible to a cart. USP2001126328319.
  22. Stahler ; Sr. Richard D.. Hand truck having a folding nose piece. USP2001056234497.
  23. Jensen Oystein (8355 Ny Solbjerg Onstedvej 9 DK). Hand trucks. USP1977034009891.
  24. Hale Layton C. ; Jensen Steven A.. Highly damped kinematic coupling for precision instruments. USP2001126325351.
  25. Stewart Charles L. (1733 Addison Rd. Palos Verdes Estates CA 90274). Indirect extrusion process and machinery therefor. USP1988114781053.
  26. Slocum Alexander H.. Kinematic coupling method and system for aligning sand mold cores and the like and other soft objects and surfaces. USP1998065769554.
  27. Landa Benzion (Edmonton CAX) Shmaiser Aron (Rishon-Le-zion NY ILX) Feher Peter (Johnson City NY). Lens and shutter positioning mechanism for variable-magnification copier. USP1986124629308.
  28. Sato Shigeki,JPX ; Watanabe Takashi,JPX. Lens barrel and optical apparatus having the same. USP1999105969886.
  29. Smith ; III Ralph A. ; Tian Steven Y.. Liquid control valve assembly with local damping and hydraulically actuated fuel injector using same. USP2000116145805.
  30. Dai Xunhu ; Forst Donald W.. Low-loss PZT ceramic composition cofirable with silver at a reduced sintering temperature and process for producing same. USP1998085792379.
  31. Fujimura Katsuyuki,JPX. Mechanism for driving a screw rod by supersonic vibration. USP2000116147435.
  32. Hoon-Yeng Yap. Method and apparatus for transferring wafer cassettes in microelectronic manufacturing environment. USP2002046364331.
  33. Geh, Bernd; Graupner, Paul; Wurmbrand, Klaus; Stammler, Thomas; Stenkamp, Dirk; Stuhler, Jochen. Method for optimizing the image properties of at least two optical elements as well as methods for optimizing the image properties of at least three optical elements. USP2004016678240.
  34. Moynihan Edward R. (Lebanon NH) Gailus David W. (Merrimack NH) Palifka Robert G. (Orford NH) Hoisington Paul A. (Norwich VT) Hine Nathan P. (South Strafford VT) Adams-Brady David (Meriden NH) Biggs M. Method for poling a ceramic piezoelectric plate. USP1997025605659.
  35. Thomas Raymond Ohnstein ; Klein Leonard Johnson. Micro-positioning optical element. USP2002096445514.
  36. Kleiman Rafael Nathan. Micropositioning devices, using single-crystal piezoelectric bodies, having at least two spatial degrees of freedom. USP1998045739624.
  37. Goebel Grant D. (Rochester NY) Discher Norman C. (Rochester NY) Campbell Collin M. (Rochester NY). Multi-path electronic camera assembly. USP1994035296943.
  38. Berthiaume William ; Law Bruce W. ; Kukla Kenneth A.. Multiple use hand trucks fitted with detachable bottled water carrier tray and methods of their construction and use. USP2001106302414.
  39. Stallbaumer, John J.. Multipurpose storage and transport cart. USP2004076758482.
  40. Yu Kyeong-su (Suwon KRX). Object tracking method for automatic zooming and the apparatus therefor. USP1995075434621.
  41. Ito Fumio (Yokohama JPX) Yazaki Mutsunobu (Yokohama JPX). Photographic apparatus. USP1980014184759.
  42. Luecke Francis S. (San Jose CA) Tuganov Alexander (Mountain View CA). Piezoelectric actuator for optical alignment screws. USP1995045410206.
  43. Laor, Herzel. Piezoelectric and electromagnetic actuators for beam alignment and systems and methods using the same. USP2003086606426.
  44. Kojima Takao,JPX ; Toyoda Hideki,JPX ; Shimozato Tetsuma,JPX. Piezoelectric sensor. USP1998045739626.
  45. Letsch Thomas (Pluderhausen DEX) Weipert Jorn (Lorch DEX) Steppat Eduart (Kirchheim/Teck DEX). Piston with oval shaped lands. USP1993055211101.
  46. Kotake Shigeo (Kita JPX). Polycrystal piezoelectric device and method of producing the same. USP1992075127982.
  47. Ota Kazuya,JPX. Projection exposure system. USP2001056236448.
  48. Huang Jin. Single crystal piezoelectric transformer using extensional vibration modes and method for driving the same. USP1998065763983.
  49. Eda Kazuo (Nara JPX) Taguchi Yutaka (Settsu JPX) Onishi Keiji (Settsu JPX) Seki Shun-ichi (Osaka JPX). Surface acoustic wave device having a lamination structure. USP1995085446330.
  50. Isobe Atsushi,JPX ; Hikita Mitsutaka,JPX ; Takubo Chisaki,JPX ; Asai Kengo,JPX. Surface acoustic wave equipment. USP1998095814917.
  51. Richard D. Stahler, Sr.. Three-position hand truck using multiple locking mechanisms and/or a combination connecting member and channel. USP2002046364328.
  52. Hayasaka Toshimi,JPX. Ultrasonic linear motor. USP1999115982075.
  53. Ohnishi, Kazumasa; Nakazawa, Toru; Manabe, Yukimitsu. Ultrasonic linear motor. USP1991075036245.
  54. Onishi Kazumasa (Niigata JPX) Naito Koichi (Niigata JPX). Ultrasonic linear motor. USP1992075134334.
  55. Yoshiaki Kimura JP; Tadashi Imamura JP. Wheel with a damper for an automobile and a method for manufacturing the same. USP2002086439282.
  56. Douglas S. Harter. Wheeled carrier and seat assembly for use while hunting with decoys. USP2002046375200.
  57. Kim Seong-Gon,KRX. Zooming method and apparatus for a camera. USP1999085943513.