IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0819182
(2001-03-27)
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발명자
/ 주소 |
- Mojarradi, Mohammad M.
- Polk, James
- Marrese, Colleen
- Mueller, Juergen
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출원인 / 주소 |
- California Institute of Technology
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
1 |
초록
▼
A micro-colloid thruster system may be fabricated using micro electromechanical system (MEMS) fabrication techniques. A beam of charged droplets may be extracted from an emitter tip in an emitter array by an extractor electrode and accelerated by an accelerator electrode to produce thrust. The micro
A micro-colloid thruster system may be fabricated using micro electromechanical system (MEMS) fabrication techniques. A beam of charged droplets may be extracted from an emitter tip in an emitter array by an extractor electrode and accelerated by an accelerator electrode to produce thrust. The micro-colloid thruster system may be used as the main propulsion system for microspacecraft and for precision maneuvers in larger spacecraft.
대표청구항
▼
A micro-colloid thruster system may be fabricated using micro electromechanical system (MEMS) fabrication techniques. A beam of charged droplets may be extracted from an emitter tip in an emitter array by an extractor electrode and accelerated by an accelerator electrode to produce thrust. The micro
A micro-colloid thruster system may be fabricated using micro electromechanical system (MEMS) fabrication techniques. A beam of charged droplets may be extracted from an emitter tip in an emitter array by an extractor electrode and accelerated by an accelerator electrode to produce thrust. The micro-colloid thruster system may be used as the main propulsion system for microspacecraft and for precision maneuvers in larger spacecraft. 1. A mechanical locking system for locking a first edge of a first panel to a second edge of an identical second panel that are arranged on a subfloor, the mechanical locking system comprising: means on the first edge and the second edge for forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels; a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges; the locking device including a locking groove which extends parallel to and spaced from the second edge, the locking groove being open at the underside of the second edge and including an internal surface; the locking device further including a strip extending from the first edge, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip; the strip, the locking element, and the locking groove being configured such that when the second edge is pressed against an upper part of the first edge and is then angled down against the subfloor, the locking element can enter the locking groove; the locking element has a locking surface which faces the first edge and is configured so that it can contact the internal surface of the locking groove when the first and second edges are joined together to prevent substantial separation of the joined first and second edges; and the locking element further including an outer portion which is most distant to the joined edges and is not in contact with the locking groove when the first and second edges are joined together. 2. The mechanical locking system as claimed in claim 1, wherein when the first and second edges are joined together with the locking device, the first and second panels can be arranged such that a small play exists between the first and second edges. 3. The mechanical locking system as claimed in claim 1, wherein the locking element has a guide surface at an upper part thereof facilitating insertion of the locking element into the locking groove. 4. The mechanical locking system as claimed in claim 1, wherein when the first and second edges are joined together with the locking device, at least one part of a top side of the locking element is not in contact with the locking groove. 5. The mechanical locking system as claimed in claim 1, wherein the strip is integrally formed with the first edge. 6. The mechanical locking system as claimed in claim 5, wherein a thickness of the strip may vary throughout its width. 7. The mechanical locking system as claimed in claim 2, wherein the locking element has a guide surface at an upper part thereof facilitating insertion of the locking element into the locking groove. 8. The mechanical locking system as claimed in claim 2, wherein when the first and second edges are joined together with the locking device, at least one part of a top side of the locking element is not in contact with the locking groove. 9. The mechanical locking system as claimed in claim 7, wherein when the first and second edges are joined together with the locking device, at least one part of a top side of the locking element is not in contact with the locking groove. 10. A mechanical locking system for locking a first edge of a first panel to a second edge of an identical second panel, the mechanical locking system comprising: a tongue and groove on the first edge and the second edge forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels; a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the sec ond edges to each other in a second direction parallel to the principal plane and at right angles to the edges; the locking device including a locking groove which extends parallel to and spaced from the second edge, the locking groove being open at the underside of the second edge and including an internal surface; the locking device further including a strip extending from the first edge, the strip extending throughout substantially an entire length of the first edge and being provided with a locking element projecting from the strip; the strip, the locking element, and the locking groove being configured such that when the second edge is pressed against an upper part of the first edge and is then angled down, the locking element can enter the locking groove; the locking element has a locking surface which faces the first edge and is configured so as to contact the internal surface of the locking groove when the first and second edges are joined together to prevent substantial separation of the joined first and second edges; and the locking element further including an outer portion which is most distant to the joined edges and is not in contact with the locking groove when-the first and second edges are joined together. 11. The mechanical locking system as claimed in claim 10, wherein when the first and second edges are joined together with the locking device, the first and second panels can be arranged such that a small play exists between the first and second edges. 12. The mechanical locking system as claimed in claim 10, wherein the locking element has a guide surface at an upper part thereof facilitating insertion of the locking element into the locking groove. 13. The mechanical locking system as claimed in claim 10, wherein when the first and second edges are joined together with the locking device, at least one part of a top side of the locking element is not in contact with the locking groove. 14. The mechanical locking system as claimed in claim 10, wherein the strip is integrally formed with the first edge. 15. The mechanical locking system as claimed in claim 14, wherein a thickness of the strip varies throughout its width. 16. The mechanical locking system as claimed in claim 11, wherein the locking element has a guide surface at an upper part thereof facilitating insertion of the locking element into the locking groove. 17. The mechanical locking system as claimed in claim 11, wherein when the first and second edges are joined together with the locking device, at least one part of a top side of the locking element is not in contact with the locking groove. 18. The mechanical locking system as claimed in claim 1, wherein the first panel has a bottom surface, and the strip is substantially coplanar with the bottom surface of the first panel. 19. The mechanical locking system as claimed in claim 1, wherein the first panel has a bottom surface and the tongue has a bottom surface, and when the first panel is joined to the second panel, the bottom surface of the tongue is above the bottom surface of the first panel. 20. The mechanical locking system as claimed in claim 1, wherein the first panel and the second panel form a laminated floor. 21. A mechanical locking system for locking a first edge of a first floor panel to a second edge of an identical second floor panel, the mechanical locking system comprising: a tongue and groove on the first edge and the second edge forming a first mechanical connection locking the first and second edges to each other in a first direction at right angles to a principal plane of the panels; a locking device arranged on an underside of the first and the second edges, the locking device forming a second mechanical connection locking the first and the second edges to each other in a second direction parallel to the principal plane and at right angles to the edges; the locking device including a locking groove which extends parallel to and spaced from the second edge, the l
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