IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0364018
(2003-02-10)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
8 |
초록
▼
A hole cutting device for forming and relocating holes in the ground includes a hollow cylindrical cutting head with a lower cutting edge surrounding an open bottom, a tubular shaft extending upwardly from the cylindrical head and a handle portion on an upper end of the shaft. Upon forcing the cutti
A hole cutting device for forming and relocating holes in the ground includes a hollow cylindrical cutting head with a lower cutting edge surrounding an open bottom, a tubular shaft extending upwardly from the cylindrical head and a handle portion on an upper end of the shaft. Upon forcing the cutting head downwardly into the ground, a turf and soil plug fills the interior of the head. An air delivery system, operable at the handle portion, injects a charge of air at the bottom of the soil plug upon removal from the ground, thereby eliminating vacuum suction and allowing the soil plug to be removed intact without breaking or disintegrating. Once the cutting head is removed from the formed hole, a hinged lever on the shaft forces a push plate within the cutting head downwardly towards the open end to eject the plug therefrom. If desired, the plug may be deposited into a previously formed hole.
대표청구항
▼
A hole cutting device for forming and relocating holes in the ground includes a hollow cylindrical cutting head with a lower cutting edge surrounding an open bottom, a tubular shaft extending upwardly from the cylindrical head and a handle portion on an upper end of the shaft. Upon forcing the cutti
A hole cutting device for forming and relocating holes in the ground includes a hollow cylindrical cutting head with a lower cutting edge surrounding an open bottom, a tubular shaft extending upwardly from the cylindrical head and a handle portion on an upper end of the shaft. Upon forcing the cutting head downwardly into the ground, a turf and soil plug fills the interior of the head. An air delivery system, operable at the handle portion, injects a charge of air at the bottom of the soil plug upon removal from the ground, thereby eliminating vacuum suction and allowing the soil plug to be removed intact without breaking or disintegrating. Once the cutting head is removed from the formed hole, a hinged lever on the shaft forces a push plate within the cutting head downwardly towards the open end to eject the plug therefrom. If desired, the plug may be deposited into a previously formed hole. thereof.4. The motor locking assembly according to claim 3, wherein said locking sleeve and said locking actuator are threadably coupled to each other.5. The motor locking assembly according to claim 4 further comprising, a biasing member operatively engaging said rod for urging said rod to one of said engaged and said disengaged positions.6. A locking actuator in a motor locking assembly in a system for raising and lowering an overhead door having a counterbalance system operable with a motor assembly, having an operating position and a locked position, and a locking sleeve operatively attached to the counterbalance system, the motor locking assembly having a retractable rod selectively moveable to an engaged position and a disengaged position for releasing the motor assembly from the locked position, the locking actuator comprising, a locking cuff threadably received on the locking sleeve, said locking cuff having a portion engageable with the rod. 7. The locking actuator of claim 6, wherein the locking cuff includes a ring and a projection extending from said ring, wherein said ring is received on the locking sleeve and said projection slidably engages said rod.8. A locking rod in a motor locking assembly having a locking actuator, wherein the motor locking assembly selectively releases a motor assembly in a system for raising and lowering a door, the motor assembly having an operating position and a locked position, the locking rod comprising, a rod engageable with the motor assembly, said rod moveable between an engaged position and a disengaged position, a collar attached to said rod, whereby said locking actuator contacts said collar to cause movement of said rod. 9. The locking rod of claim 8 further comprising, a plug attached to said rod, said collar extending radially outwardly from said plug, and a biasing member operatively engaging said plug for urging said rod to one of said engaged or disengaged positions.10. The locking rod of claim 9, wherein said biasing member is a coil spring, said coil spring contacting said collar on a first side and said locking actuator selectively contacting said collar on a second side, whereby said rod is biased toward said engaged position and said locking actuator acts in opposition to said coil spring to move said rod to said disengaged position.11. The locking rod of claim 9 wherein said biasing member is a leaf spring contacting said plug on a first end and said locking actuator selectively contacting said collar on a second end, whereby said rod is biased toward said engaged position and said locking actuator acts in opposition to said coil spring to move said rod to said disengaged position.
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