Apparatus having a hand truck configuration and a tripod configuration
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62B-001/12
F16M-011/20
B25H-001/04
출원번호
US-0535207
(2014-11-06)
등록번호
US-9278703
(2016-03-08)
발명자
/ 주소
Hollub, IV, Edmund E.
출원인 / 주소
Hollub, IV, Edmund E.
대리인 / 주소
Chu, Andrew W.
인용정보
피인용 횟수 :
2인용 특허 :
13
초록▼
The apparatus transforms between a hand truck configuration and a tripod configuration. The apparatus includes a base frame, wheel axles, a base plate, a plurality of handle rods, and a center rod. The base frame is formed by lateral side supports, a top support member, upper and lower axle support
The apparatus transforms between a hand truck configuration and a tripod configuration. The apparatus includes a base frame, wheel axles, a base plate, a plurality of handle rods, and a center rod. The base frame is formed by lateral side supports, a top support member, upper and lower axle support bars, and a middle support member. The middle support member has a receptacle engaging a tool attachment. The base plate is made integral with the base frame, and the base frame extends orthogonally from a top planar surface of the base plate. The handle rods and center rod also extend orthogonally from the top planar surface in the hand truck configuration with the handle rods fixed to the top support member. Handle rods and center rod pivot at angles from the top planar surface in the tripod configuration. The apparatus transforms and inverts between configurations.
대표청구항▼
1. An apparatus having a hand truck configuration and a tripod configuration, said apparatus comprising: a base frame comprising: lateral side supports, each lateral side support having a top end and a bottom end;a top support member connecting across respective top ends of said lateral side support
1. An apparatus having a hand truck configuration and a tripod configuration, said apparatus comprising: a base frame comprising: lateral side supports, each lateral side support having a top end and a bottom end;a top support member connecting across respective top ends of said lateral side supports;upper axle support bars, each upper axle support bar attaching to a respective top end of a lateral side support;lower axle support bars, each lower axle support bar attaching to a respective bottom end of a lateral side support and a respective upper axle support bar; anda middle support member connecting across said upper axle support bars;a plurality of wheel axles connecting said upper axle support bars and said lower axle support bars, each wheel axle supporting a wheel outward of said base frame;a base plate having a top planar surface and a bottom planar surface, wherein said lateral side supports are fixed on said top planar surface, said lateral side supports being orthogonal to said top planar surface, said base plate being made integral with said lateral side supports;a plurality of handle rods, each handle rod being pivotally attached to said base plate at a pivoting end and extending from said top planar surface of said base plate, each handle rod having a gripping end opposite said pivoting end so as to form a manual grip in said hand truck configuration and a foot of a leg in said tripod configuration; anda center rod being pivotally attached to said base plate at a center pivoting end, extending from said top planar surface of said base plate, and having a top end opposite said center pivoting end and aligned with said gripping ends of said handle rods in said hand truck configuration, said top end being another leg in said tripod configuration. 2. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, said lateral side supports being parallel, said top support member being orthogonal to lateral side supports, wherein the upper and lower axle support bars form acute angles with said lateral side supports. 3. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, wherein sets of upper and lower axle support bars are parallel to each other, and wherein said middle support member is parallel to said top support member, said middle support member being closer to said lower axle support bars than said lateral side supports along lengths of said upper axle support bars. 4. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, said middle support member being comprised of a receptacle means mounted between sets of upper axle support bars and lower axle support bars. 5. The apparatus having a hand truck configuration and a tripod configuration, according to claim 4, said receptacle means being orthogonal to said middle support member and parallel to said lateral side supports. 6. The apparatus having a hand truck configuration and a tripod configuration, according to claim 4, wherein access to an opening of said receptacle means is aligned with said lateral side supports. 7. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, said plurality of wheel axles being comprised of two wheel axles, wherein wheels are mounted on both sides of said base frame. 8. The apparatus having a hand truck configuration and a tripod configuration, according to claim 7, wherein said two wheel axles are connected across said base frame. 9. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, wherein each handle rod comprises a cup and socket connector for pivotal attachment to said base plate, each connector defining range and direction of pivoting position of each handle rod. 10. The apparatus having a hand truck configuration and a tripod configuration, according to claim 9, each cup and socket connector abutting each handle rod in a first fixed position for said hand truck configuration, each cup and socket connector abutting each handle rod in a second fixed position for said tripod configuration. 11. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, each handle rod being comprised of a cross rib, said cross rib extending orthogonal to each handle rod and being aligned with said top support member, each cross rib being affixed to said top support member in said hand truck configuration, and each cross rib pointing inward toward said base frame in said tripod configuration. 12. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, wherein said center rod is comprised of a center cup and socket connector for pivotal attachment to said base plate, the center connector defining range and direction of pivoting position of center rod. 13. The apparatus having a hand truck configuration and a tripod configuration, according to claim 12, the center connector abutting said center rod in a first fixed position for said hand truck configuration, the center connector abutting said center rod in a second fixed position for said tripod configuration, said center rod being affixed to said top support member in said hand truck configuration, and said center rod being aligned with at least one cross rib of the handle rods. 14. The apparatus having a hand truck configuration and a tripod configuration, according to claim 1, further comprising: a tool attachment comprised of a tool body and an insert shaft, said insert shaft being removeably attached to said receptacle means in said tripod configuration. 15. The apparatus having a hand truck configuration and a tripod configuration, according to claim 14, said tool body being selected from one of a group consisting of a table saw surface, a vice, and a pipe bending head. 16. The apparatus having a hand truck configuration and a tripod configuration, according to claim 14, said insert shaft having a cross-sectional shape cooperative with a shape of said receptacle means. 17. A method for transforming an apparatus between a hand truck configuration and a tripod configuration, said method comprising the steps of: assembling the apparatus of claim 1;setting said hand truck configuration with said handle rods and said center rod attached to said top support member of said base frame, said handle rods and said center rod being orthogonal to said base plate, said wheels and said bottom planar surface being oriented on a ground surface;releasing said handle rods and said center rod from said top support member;pivoting said handle rods and said center rod on said base plate, wherein range of motion of said handle rods and said center rod is set by respective cup and socket connectors;inverting said apparatus with said gripping ends of said handle rods on a ground surface and said top end of said center rod on said ground surface, said cup and socket connectors resiliently holding position of said handle rods and said center rod relative to said base plate;exposing an opening of a receptacle means aligned with said bottom planar surface of said base plate; andsetting said tripod configuration with said handle rods and said center rod pivoted at angles to said base plate. 18. The method for transforming an apparatus between a hand truck configuration and a tripod configuration, according to claim 17, further comprising the steps of: inserting a tool attachment into said receptacle means in said tripod configuration, said tool attachment being planar with said bottom planar surface of said base plate, said bottom planar surface facing upward and opposite said ground surface. 19. The method for transforming an apparatus between a hand truck configuration and a tripod configuration, according to claim 17, further comprising the steps of: inserting a tool attachment into said receptacle means in said hand truck configuration, said tool attachment facing upward from said bottom planar surface of said base plate. 20. The method for transforming an apparatus between a hand truck configuration and a tripod configuration, according to claim 17, further comprising the steps of: reversing the steps of inverting said apparatus and releasing said handle rods and said center rod; andre-setting said hand truck configuration.
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