Double-walled structure and connection arrangement
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E04F-017/04
출원번호
US-0594113
(2000-06-14)
발명자
/ 주소
Marcellus, Dwight A.
출원인 / 주소
Lindab AB
대리인 / 주소
Weingarten, Schurgin, Gagnebin & Lebovici LLP
인용정보
피인용 횟수 :
8인용 특허 :
25
초록▼
There is provided a double-walled structure for coupling to another double-walled structure. The coupling connects one female end portion of the one structure and one male end portion of the other structure together. The connecting requires only connecting of the outer walls of the structures togeth
There is provided a double-walled structure for coupling to another double-walled structure. The coupling connects one female end portion of the one structure and one male end portion of the other structure together. The connecting requires only connecting of the outer walls of the structures together, providing an overlapping connection. The inner walls of the structures have a gap between their ends, when connected. Thereby the coupling of the structures is facilitated. The space between the inner wall and outer wall of the structure is occupied by an insulating material, such as a sound absorbing fibrous batting. The space between the male/female end portions for connection to a female/male end of another structure is filled by a seal, preventing loss of insulating material and providing insulation of the joint coupling the double-walled structures together. The structure can be used, especially, as a segment in a sound-absorbing ductworks system.
대표청구항▼
There is provided a double-walled structure for coupling to another double-walled structure. The coupling connects one female end portion of the one structure and one male end portion of the other structure together. The connecting requires only connecting of the outer walls of the structures togeth
There is provided a double-walled structure for coupling to another double-walled structure. The coupling connects one female end portion of the one structure and one male end portion of the other structure together. The connecting requires only connecting of the outer walls of the structures together, providing an overlapping connection. The inner walls of the structures have a gap between their ends, when connected. Thereby the coupling of the structures is facilitated. The space between the inner wall and outer wall of the structure is occupied by an insulating material, such as a sound absorbing fibrous batting. The space between the male/female end portions for connection to a female/male end of another structure is filled by a seal, preventing loss of insulating material and providing insulation of the joint coupling the double-walled structures together. The structure can be used, especially, as a segment in a sound-absorbing ductworks system. ge the teeth towards the inner end of the first rack and the teeth towards the inner end of the second rack, thereby defining a set of variable steering angles between the outer end of the first rack and the outer end of the second rack; an actuator having a moving member coupled to the pinion, whereby the moving member causes the pinion to rotate; and, a controller coupled in signal communication with the actuator. 4. The steering system of claim 3, further comprising a steering wheel coupled in signal communication with the controller. 5. The steering system of claim 4 wherein the steering wheel receives an input command from an operator. 6. A steering system, comprising: a first elongated rack having an inner end, an outer end, and a set of teeth with a predetermined variable tooth profile therebetween, the first elongated rack having a first longitudinal axis; a second elongated rack having an inner end, an outer end, and a set of teeth with a predetermined variable tooth profile therebetween, the second elongated rack having a second longitudinal axis; and, a pinion disposed to engage the teeth towards the inner end of the first rack and the teeth towards the inner end of the second rack, thereby defining a set of variable steering angles between the outer end of the first rack and the outer end of the second rack, the pinion having a centerline parallel to a plane containing the first longitudinal axis and the second longitudinal axis, wherein rotation of the pinion is about the centerline. 7. The steering system of claim 6 wherein the variable tooth profile of the second rack is complimentary to the variable tooth profile of the first rack. 8. The steering system of claim 6 wherein: the variable tooth profile of the first rack is monotonically increasing in pitch from its inner end toward its outer end; and the variable tooth profile of the second rack is monotonically increasing in pitch from its inner end toward its outer end. 9. The steering system of claim 6 further comprising a hydraulic assist, whereby the hydraulic assist is operably disposed to assist the steering system. 10. The steering system of claim 6 further comprising an electric assist, whereby the electric assist is operably disposed to assist the steering system. 11. The steering system of claim 6 wherein the first elongated rack and the second elongated rack are adjacently disposed. 12. The steering system of claim 6 wherein the teeth of the first elongated rack extend from one side of the first elongated rack to a diametrically opposite side of the first elongated rack. 13. A steering system, comprising: a first elongated rack having an inner end, an outer end, and a set of teeth with a predetermined variable tooth profile therebetween; a second elongated rack having an inner end, an outer end, and a set of teeth with a predetermined variable tooth profile therebetween; a pinion disposed to engage the teeth towards the inner end of the first rack and the teeth towards the inner end of the second rack, thereby defining a set of variable steering angles between the outer end of the first rack and the outer end of the second rack; and, an electric assist, wherein the electric assist is operably disposed to assist the steering system.
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이 특허에 인용된 특허 (25)
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