Invention Grant
US07954779B2 Device for balancing an arm pivoting about an axis of rotation, for example, an arm supporting a work station all-purpose fume or gas exhaust conduit
有权
用于平衡围绕旋转轴线枢转的臂的装置，例如，支撑工作站的多功能通气烟气或排气导管
- Patent Title: Device for balancing an arm pivoting about an axis of rotation, for example, an arm supporting a work station all-purpose fume or gas exhaust conduit
- Patent Title (中): 用于平衡围绕旋转轴线枢转的臂的装置，例如，支撑工作站的多功能通气烟气或排气导管
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Application No.: US10515539Application Date: 2003-05-23
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Publication No.: US07954779B2Publication Date: 2011-06-07
- Inventor: Luciano Coral , Pietro Bazzo
- Applicant: Luciano Coral , Pietro Bazzo
- Applicant Address: IT Leini
- Assignee: Coral S.p.A.
- Current Assignee: Coral S.p.A.
- Current Assignee Address: IT Leini
- Agency: Fish & Richardson P.C.
- Priority: ITTO2002A0437 20020523
- International Application: PCT/IT03/00318 WO 20030523
- International Announcement: WO03/100313 WO 20031204
- Main IPC: E04G3/00
- IPC: E04G3/00 ; B08B15/02
Abstract:
The torque, due to the weight of the arm, is balanced according to the angular position of the arm by a contrast spring acting perpendicular to the axis of rotation of the arm. The spring is controlled by a cam integral with the arm, is housed in a container closed by a wall acted on by the profile of the cam, and rests on a guide disk whose position relative to the container is adjusted by means of an adjusting screw to calibrate the precompression of the spring according to the minimum torque due to the weight of the arm. In another embodiment, at least one contrast spring acts parallel to the axis of rotation of the arm, and is controlled by a cam edge of a cylinder for axially moving a corresponding sleeve housing the spring.
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