[특허]Electrohydraulic valve having an armature with a rolling bearing

HUSCO International, Inc.

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Electrohydraulic valve having an armature with a rolling bearing

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F15B-013/00
미국특허분류(USC)	251/129.15; 123/090.11; 137/625.65
출원번호	US-0911896 (2004-08-05)
발명자 / 주소	Nordstrom,Robert S. Van Weelden,Curtis L.
출원인 / 주소	HUSCO International, Inc.
대리인 / 주소	Quarles &
인용정보	피인용 횟수 : 17 인용 특허 : 12

초록
▼

A solenoid operated valve has a valve body with a plurality of ports and a spool slidable within the valve body to interconnect the ports in different combinations. An actuator drives the spool into several operating positions. The actuator has a solenoid assembly with an aperture within which first and second tubular pole pieces are received. An armature is able to slide within the two pole pieces and a push member projects from the armature abutting the spool. The push member is secured to a rolling bearing which has a plurality of rolling elements th...

대표
청구항
▼

What is claimed is: 1. An electrohydraulic valve comprising: a valve body with a bore and having an inlet port, an outlet port, a first workport, and a second workport in communication with the bore; a spool slidably received within the bore of the valve body and having passages therein to selectively connect the inlet port and the outlet port to the first workport and the second workport in different positions of the spool in the bore; and an actuator having a solenoid coil assembly with a coil aperture formed therein, an armature slidably received in the coil aperture, and a push member projecting from the armature into engagement with the spool, the actuator further includes a cage secured to at least one of the armature and the push member with an outer surface in which a plurality of slots extend, and a plurality of rollable elements received in the plurality of slots and contact with the actuator aperture. 2. The electrohydraulic valve as recited in claim 1 wherein the cage has an aperture through which the push member extends. 3. The electrohydraulic valve as recited in claim 2 wherein the cage is secured to the push member by a retaining ring. 4. The electrohydraulic valve as recited in claim 1 wherein the cage and push are formed as a single piece. 5. The electrohydraulic valve as recited in claim 1 wherein the cage is formed of non-magnetic material. 6. The electrohydraulic valve as in claim 1 wherein the armature has an aperture into which the push member is received and the armature is staked to the push member. 7. The electrohydraulic valve as recited in claim 1 wherein the plurality of rollable elements are spheres. 8. The electrohydraulic valve as recited in claim 1 wherein the armature has a region at one end with a reduced thickness to concentrate, in that region, magnetic flux produced by the coil. 9. The electrohydraulic valve as recited in claim 1 wherein the actuator further comprises: a first pole piece that extends into one end of the coil aperture and having an outwardly extending first flange that is outside the coil aperture; and a second pole piece extending into another end of the coil aperture and spaced from the first pole piece, the second pole piece having an outwardly extending second flange outside the coil aperture; wherein the armature moves within the first pole piece and the second pole piece in response to a magnetic field produced by the solenoid coil. 10. The electrohydraulic valve as recited in claim 9 wherein the armature bridges a space between the first pole piece and the second pole piece, and has one end adjacent the first pole piece which one end has a region with a reduced thickness to concentrate, in that region, magnetic flux produced by the coil. 11. The electrohydraulic valve as recited in claim 9 wherein the actuator further comprises a tube of non-magnetic material located within the first pole piece and the second pole piece, with the armature and a cage moveably received in the tube with the plurality of rollable elements engaging the tube. 12. The electrohydraulic valve as recited in claim 9 wherein the actuator further comprises an outer housing, made of a magnetically conductive metal, extending around the solenoid coil assembly and crimped to the valve body, the outer housing engaging the first flange of the first pole piece and the second flange of the second pole piece. 13. The electrohydraulic valve as recited in claim 1 wherein the actuator further comprises an outer housing extending around the solenoid coil assembly and crimped to the valve body. 14. The electrohydraulic valve as recited in claim 1 wherein: the outlet port is at one end of the bore in the valve body, and the first workport, the second workport and the inlet port open transversely into the bore; the spool has two ends with an aperture extending there between and has an notch in an exterior surface; and a spring which biases the spool into engagement with the push member. 15. The electrohydraulic valve as recited in claim 14 wherein in response to forces from the spring and the armature, the spool moves into a first position where the second workport is in fluid communication with the outlet port and the first workport is in fluid communication via the notch with the inlet port, and a second position where the inlet port is in fluid communication via the notch with the second workport and the aperture provides a fluid path between the first workport and the outlet port. 16. The electrohydraulic valve as recited in claim 15 further comprising the spool having an intermediate position between the first position and the second position in which the notch provides an interconnection of the first workport, the second workport and the inlet port. 17. The electrohydraulic valve as recited in claim 14 wherein the spool has an intermediate position between the first position and the second position in which the first workport and the second workport are disconnected from the inlet port and the outlet port. 18. An electrohydraulic valve comprising: a valve body having a bore there through forming an outlet port at one end of the valve body, and having with a first port, a second port and an inlet port in communication with the bore; a spool slidably received within the bore of the valve body and having an aperture extending from an end of the spool to a point proximate an opposite end of the spool, the spool including an notch in an exterior surface; a spring which biases the spool away from the one end of the valve body; and an actuator having a solenoid coil assembly with an coil aperture therein, a first pole piece with a tubular section that extends into one end of the coil aperture, and a second pole piece having a tubular section extending into another end of the coil aperture and spaced from the first pole piece, the actuator further including a plunger comprising an armature slidable within the tubular interior section of the first pole piece and the tubular section of the second pole piece, a push member projecting from the armature into engagement with the spool, and a bearing that has a plurality of rollable elements which guide movement of the armature within at least one of the first and second pole pieces. 19. The electrohydraulic valve as recited in claim 18 wherein the bearing comprises a cage secured to at least one of the body and the push member, the cage having an outer surface with plurality of slots, and the plurality of rollable elements comprises spheres received in the plurality of slots. 20. The electrohydraulic valve as recited in claim 19 wherein the cage has an aperture through which the push member extends, and the cage is secured to the push member by a retaining ring. 21. The electrohydraulic valve as recited in claim 18 wherein the armature has an aperture into which the push member is received and the armature is staked to the push member. 22. The electrohydraulic valve as recited in claim 18 wherein in response to forces from the spring and the armature, the spool moves into a first position where the second port is in fluid communication with the outlet port and the first port is in fluid communication via the notch with the inlet port, and into a second position where the inlet port is in fluid communication via the notch with the second port and the aperture provides a fluid path between the first port and the outlet port. 23. The electrohydraulic valve as recited in claim 22 wherein the spool has an intermediate position between the first position and the second position in which the notch provides an interconnection of the first port, the second port and the inlet port. 24. The electrohydraulic valve as recited in claim 22 wherein the spool has an intermediate position between the first position and the second position in which the first port and the second port are disconnected from the inlet port and the outlet port. 25. The electrohydraulic valve as recited in claim 18 wherein the actuator further comprises a non-magnetic tube within the first and second pole pieces and having a portion that extends between the first pole piece and the valve body, and wherein the armature and rolling bearing are within the tube. 26. The electrohydraulic valve as recited in claim 18 wherein the actuator further comprises an outer housing extending around the solenoid coil assembly and crimped to the valve body. 27. The electrohydraulic valve as recited in claim 18 wherein the actuator further comprises an outer housing, made of a magnetically conductive metal, extending around the solenoid coil assembly and crimped to the valve body, the outer housing engaging the first flange of the first pole piece and the second flange of the second pole piece. 28. The electrohydraulic valve as recited in claim 18 wherein the armature has a given end facing the valve body, wherein the given end has a reduced thickness to concentrate magnetic flux produced by the coil. 29. An electrohydraulic valve comprising: a valve body with a bore and having an inlet port, an outlet port, a first workport, and a second workport in communication with the bore; a spool slidably received within the bore of the valve body and having passages therein to selectively connect the inlet port and the outlet port to the first workport and the second workport in different positions of the spool in the bore; and an actuator having a solenoid coil assembly with a coil aperture formed therein, an armature slidably received in the coil aperture, wherein the armature has a region at one end with a reduced thickness to concentrate, in that region, magnetic flux produced by the coil, and the actuator further includes a push member projecting from the armature into engagement with the spool and a bearing secured to at least one of the armature and the push member. 30. The electrohydraulic valve as recited in claim 29 wherein the bearing comprises a cage with an outer surface in which a plurality of slots extend; and a plurality of rollable elements received in the plurality of slots and contact with the actuator aperture. 31. The electrohydraulic valve as recited in claim 30 wherein the cage is attached to the push member.

이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 17

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Electrohydraulic valve having an armature with a rolling bearing

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 17

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Electrohydraulic valve having an armature with a rolling bearing

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 피인용횟수: 17

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼