Foldable frame assembly for suspending a machine above a ground surface
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62B-001/00
B62B-003/00
출원번호
US-0259494
(2005-10-26)
등록번호
US-7464956
(2008-12-16)
발명자
/ 주소
Chen,Yu Tien
Chai,Chi Yao
출원인 / 주소
P & F Brother Industrial Corporation
대리인 / 주소
Frommer Lawrence & Haug LLP
인용정보
피인용 횟수 :
12인용 특허 :
10
초록▼
A foldable frame assembly includes first and second frames pivotally connected to each other and respectively having a wheel-carrying end and a foot end. The tabletop bracing member is pivotally connected to the first frame in proximity of a handgrip portion, and supports a machine thereon such that
A foldable frame assembly includes first and second frames pivotally connected to each other and respectively having a wheel-carrying end and a foot end. The tabletop bracing member is pivotally connected to the first frame in proximity of a handgrip portion, and supports a machine thereon such that in a propped up position, the center of gravity of the machine is disposed rearwards from the table top bracing member. The tabletop bracing member has a retaining region brought to engage a retained region on the second frame. The base prop is disposed to sit on the ground surface in the propped up position so as to relieve the frame subassembly of the mass of the machine, thereby facilitating displacement of the frame assembly to a folded or unfolded position. A locking member is disposed to place engagement of the retaining region with a selected one of the first and second retained regions.
대표청구항▼
We claim: 1. A foldable frame assembly for suspending a machine above a ground surface in a working position, comprising: a frame subassembly including a first frame having a wheel-carrying end, and a first intermediate portion extending from said wheel-carrying end to terminate at a hand grip port
We claim: 1. A foldable frame assembly for suspending a machine above a ground surface in a working position, comprising: a frame subassembly including a first frame having a wheel-carrying end, and a first intermediate portion extending from said wheel-carrying end to terminate at a hand grip portion, and a second frame having a foot end adapted to be supported on the ground surface and disposed forwardly of said wheel-carrying end in the working position, and a second intermediate portion extending from said foot end to terminate at a coupling segment that has first and second retained regions disposed proximate to and distal from said foot end, respectively, said second intermediate portion being pivotally connected to said first intermediate portion about a linking axis in a transverse direction such that, said second frame is turned about the linking axis from a folded position where said foot end is close to said handgrip portion, to the working position; a tabletop bracing member having a front end which is pivotally connected to said first intermediate portion about a front axis parallel to the linking axis and which is disposed in proximity of said handgrip portion, and a third intermediate portion which is adapted to secure the machine thereon such that in the working position, the center of gravity of the machine is located above said third intermediate portion, and such that in a propped up position, the center of gravity of the machine is disposed rearwards from said third intermediate portion, said third intermediate portion extending from said front end rearwardly to terminate at a retaining region, and being brought to engage said first retained region when said second frame is in the folded position or to engage said second retained region when said second frame is in the working position; a wheel member which is rotatably mounted on said wheel carrying end about a wheel axis parallel to the linking axis, and which is disposed to be rollable on the ground surface when said third intermediate portion is displaced from the working position to the propped up position; and a base prop including a joined end connected to said retaining region and a rest end extending from said joined end away from said retaining region such that in the propped up position, said rest end is disposed to sit on the ground surface and under the center of gravity of the machine so as to relieve said frame subassembly of the mass of the machine, thereby facilitating displacement of said frame subassembly to the folded position by virtue of rolling of said wheel member; and a locking member disposed to place the engagement of said retaining region with a selective one of said first and second retained regions in a locked position. 2. The foldable frame assembly of claim 1, wherein said coupling segment has a keyway which is disposed thereon and which extends there along between said second and first retained regions, said retaining region having a key which extends from said third intermediate portion in the transverse direction so as to be guided by said keyway to slide between the working position and the folded position. 3. The foldable frame assembly of claim 2, wherein said locking member includes a retaining hole formed in said key and extending in the transverse direction through said retaining region, first and second retained holes formed in said first and second retained regions, respectively, and a locking pin disposed in said retaining hole and movable outwardly of said retaining region in the transverse direction relative to said key way, said locking pin having a locking end which is disposed to be moved in and out of one of said first and second retained holes, thereby placing the engagement of said retaining region with the selected one of said first and second retained regions in the locked position or in an unlocked position. 4. The foldable frame assembly of claim 3, wherein said locking member further includes a first biasing member which is disposed in said retaining hole to bias said locking end to move into a selected one of said first and second retained holes. 5. The foldable frame assembly of claim 3, further comprising a tabletop adapted to support the machine thereon, said tabletop being mounted securely on said third intermediate portion. 6. The foldable frame assembly of claim 5, further comprising a control unit including an actuator rod which is disposed on and which is movable relative to said tabletop along a moving axis that is transverse to the transverse direction, and which has a rear rod end that is coupled to pull said locking pin, and a front rod end that is opposite to said rear rod end along the moving axis and that extends outwardly of said tabletop so as to be operated manually such that operation of said front rod end actuates movement of said rear rod end along the moving axis to pull said locking pin so as to move said locking end out of one of said first and second retained holes, thereby permitting said second frame to turn relative to said first frame. 7. The foldable frame assembly of claim 6, wherein said control unit further includes a linkage which interconnects said rear rod end of said actuator rod and said locking pin such that the movement of said actuator rod along the moving axis is transmitted to pull said locking pin in the transverse direction so as to place the engagement of said retaining region in the unlocked position. 8. The foldable frame assembly of claim 6, wherein said control unit further includes a lever which is pivotally connected to said front rod end about a pivot axis that is radial to the moving axis, and which has a cam end and an operated lever end that are disposed at two opposite sides of the pivot axis, said cam end being configured such that, when said operated lever end is operated to turn said cam end about the pivot axis, said cam end is brought to abut against said table top with a friction force which is sufficient to hold said front rod end in the unlocked position. 9. The foldable frame assembly of claim 6, wherein said control unit further includes a second biasing member disposed to bias said front rod end of said actuator rod toward the locked position. 10. The foldable frame assembly of claim 6, wherein said control unit further includes a safety member which is disposed to releasably restrict movement of said actuator rod so as to prevent undesired displacement of said frame subassembly to the folded position. 11. The foldable frame assembly of claim 1, wherein said base prop is integrally formed with said tabletop bracing member.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (10)
Lee Wy Peron (Riverside CA), Ceramic and masonry power saw.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.