IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0042329
(2002-01-11)
|
발명자
/ 주소 |
- Allen, J. Dewayne
- Guinn, Timmy D.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
11 |
초록
▼
A high performance, riding trowel for finishing concrete comprises damage-preventing edge guard systems that accommodate destructive forces occasioned by collisions or impacts. Downwardly projecting, motor-driven rotor assemblies gimbaled to the frame contact the concrete with multiple blades for fi
A high performance, riding trowel for finishing concrete comprises damage-preventing edge guard systems that accommodate destructive forces occasioned by collisions or impacts. Downwardly projecting, motor-driven rotor assemblies gimbaled to the frame contact the concrete with multiple blades for finishing. The rotors are tilted with linkages ideally controlled by a powered system that enhances operator control. A two-piece guard system is concentrically disposed over and rotatably associated with each rotor. The guard system comprises a captivating guard frame borne by the rotor and tilted during steering, which captivates and supports a rotatable ring guard portion that may non-destructively impact obstacles. The guard system frame suspends a plurality of rollers comprising upper and lower flanges. The rotatable guard ring is captivated upon the rollers, being vertically constrained between the flanges. When the guard ring impacts an obstruction it may freely rotate, minimizing structural damage and surface marring or disfigurement.
대표청구항
▼
A high performance, riding trowel for finishing concrete comprises damage-preventing edge guard systems that accommodate destructive forces occasioned by collisions or impacts. Downwardly projecting, motor-driven rotor assemblies gimbaled to the frame contact the concrete with multiple blades for fi
A high performance, riding trowel for finishing concrete comprises damage-preventing edge guard systems that accommodate destructive forces occasioned by collisions or impacts. Downwardly projecting, motor-driven rotor assemblies gimbaled to the frame contact the concrete with multiple blades for finishing. The rotors are tilted with linkages ideally controlled by a powered system that enhances operator control. A two-piece guard system is concentrically disposed over and rotatably associated with each rotor. The guard system comprises a captivating guard frame borne by the rotor and tilted during steering, which captivates and supports a rotatable ring guard portion that may non-destructively impact obstacles. The guard system frame suspends a plurality of rollers comprising upper and lower flanges. The rotatable guard ring is captivated upon the rollers, being vertically constrained between the flanges. When the guard ring impacts an obstruction it may freely rotate, minimizing structural damage and surface marring or disfigurement. (S11, S21) and the second (S12, S22) adjustment part in the direction of the joint axis (A1, A2) and rotatable around the joint axis (A1, A2), whereby in the fine adjustment mode the third adjustment part (S13, S23) is arranged so as to be rotatable with respect to the first adjustment part (S11, S21) around the joint axis (A1, A2) and movement of the third adjustment part (S13, S23) with respect to the second adjustment part (S12, S22) is preferably prevented. 3. The adjustment joint (S1, S2) according to claim 2, characterized in that the first adjustment part (S11, S21) and third adjustment part (S13, S23) are interconnected through a cone joint (S17, S17a, S17b) and that the second adjustment part (S12, S22) and third adjustment part (S13, S23) are interconnected through cogging (S16, S16a, S16b). 4. The adjustment joint (S1, S2) according to claim 2, characterized in that the fine adjustment mode the movement of the second adjustment part (S12, S22) and third adjustment part (S13, S23) with respect to each other in the direction of the joint axis (A1, A2) is prevented at least in such a manner that the stepwise rotation to the next position of the third adjustment part (S13, S23) with respect to the second adjustment part (S12, S22) is prevented. 5. The adjustment joint (S1, S2) according to claim 2, characterized in that the adjustment joint (S1, S2) is arranged so as to be switched from the coarse adjustment mode to the fine adjustment mode and further to the locked state by reducing the distance between the first adjustment part (S11, S21) and second adjustment part (S12, S22) by means of a locking element (S14, S15, S15a, S15b, S15c, S15d). 6. The adjustment joint (S1, S2) according to claim 1, characterized in that the adjustment joint (S1, S2) comprises an axle (S14) traveling through the joint axis (A1, A2) and functioning as locking elements (S14, S15, S15a, S15b, S15c, S15d), which axle (S14) is in the form of a bolt comprising a screw thread (S15d) and a head (S15b), said screw thread (S15d) being connected to one of a thread (S18) in a first adjustment part (S11, S21), a thread in a second adjustment part (S12, S22), and a nut (S15c) fitted in the adjustment joint (S1, S2). 7. The adjustment joint (S1, S2) according to claim 2, characterized in that the second adjustment part (S12, S22) is at least in the fine adjustment mode arranged so as to be rotatable with respect to the first adjustment part (S11, S21) around the joint axis (A1, A2) by means of a fine adjustment element (F1, F1a, F1b, F2, F2a, F2b, F2c, F2d, F2e, F2f). 8. The adjustment joint (S1, S2) according to claim 1, characterized in that the adjustment joint (S1, S2) is fitted to fastening elements (K, K1, K2) which are arranged for attaching objects and setting their positions, and that the fastening elements (K, K1, K2) also comprise a second adjustment joint (S1, S2) the joint axis (A1, A2) of which is adapted so as to be transverse with respect to the joint axis (A1, A2) of said adjustment joint (S1, S2). 9. Fastening elements for attaching objects and setting their positions, to which fastening elements (K, K1, K2) it is fitted at least one adjustment joint (S1, S2) for adjusting position, which adjustment joint (S1, S2) comprises at least two adjustment parts (S11, S12, S13, S21, S22, S23) arranged so as to be rotatable with respect to each other around (arrow R) a joint axis (A1, A2) and a locking element (S14, S15, S15a, S15b, S15c, S15d) arranged so as to function in the direction (arrow L) of said joint axis (A1, A2) for locking the adjustment parts (S11, S12, S13, S21, S22, S23) into a locked state so that the adjustment parts become immobile with respect to each other, wherein: the adjustment joint (S1, S2) is configured so as to be switched from the locked state to a fine adjustment mode by opening the locking element (S14, S15, S15a, S15b, S15c, S15d); the adjustment joint (S1, S2) is configured so as to be switched from the fi
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