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US6804858: Opening and closing mechanism of hinged pair of bodies

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Filing Information

Inventor(s) Hiroaki Yazawa · Kiyoshi Ueda ·
Assignee(s) Brother Kogyo Kabushiki Kaisha ·
Attorney/Agent(s) Oliff & Berridge, PLC ·
Primary Examiner Robert J. Sandy ·
Assistant Examiner Andre′ L. Jackson ·
Application Number US10253658
Filing date 09/25/2002
Issue date 10/19/2004
Prior Publication Data
Predicted expiration date 09/25/2022
U.S. Classifications 162/89  · 163/6  ·
International Classifications --
Kind CodeB2
International Classifications 49 98 · 49108 · 49381 · 49386 · 16239 · 16DIG 36 · 16277 · 16280 · 16285 · 16289 · 16290 · 16295 · 16306 · 16308 · 16292 · 16 50 · 16 72 · 16 78 ·
Foreign Priority JP2001298274 - 09/27/2001 ·
26 Claims, 9 Drawings


Abstract

A device comprising a pair of lower and upper bodies respectively accommodating an image scanner and a printer. The upper body is hinged at one end thereof to the lower body so that the other end thereof is allowed to move between open and close positions. A biasing mechanism is provided for biasing the upper body not to fall down toward the second body due to the weight thereof and keep it at an arbitrary position between the open and close positions. The biasing mechanism includes a spring member and applies a first biasing force to the upper body by linearly stretching the spring member. When the upper body is in the vicinity of the lower body, the biasing mechanism further generates a second biasing force to be applied to the upper body by bending the linearly stretched spring member.

Independent Claims | See all claims (26)

  1. 1. A mechanism for biasing a first body pivotably mounted to a second body to swing toward an open position thereof from closed position, said biasing mechanism comprising: a link-arm member connected between said first and second bodies, one end of which is pivotally coupled to said first body while the other end is relatively movably coupled to said second body, said other end of the link-arm member being arranged to move between first and second positions as said first body moves between open and close positions thereof; and resilient member secured at one end thereof to said link-arm member for biasing said link-arm member to move toward said first position thereof so that said first body is biased to move toward the open position thereof, said resilient member being arranged to be linearly stretched and/or contracted upon movement of said link-arm member, wherein an abutting portion is formed on said link-arm member that abuts and bends said resilient member when said first body is in the vicinity of said second body, and a relative positional relationship between said one end and said other end of said link-arm member is fixed when said first body moves.
  2. 10. An opening and closing mechanism, comprising: first and second bodies, said first body being pivoted to said second body to be movable between open and close positions with respect to said second body; and a biasing mechanism that biases said first body to move toward the open position thereof, said biasing mechanism including a resilient member and exerting a first biasing force by linearly stretching said resilient member, said biasing mechanism further including a contact member and exerting a second biasing force by said contact member contacting and bending said linearly stretched resilient member at a side thereof, said side being spaced away from ends of said resilient member, when said first body is in the vicinity of said second body.
  3. 22. A device having a pair of upper and lower bodies, one end of said upper body being hinged to said lower body so that the other end thereof is allowed to move between open and close positions, said device comprising: a link-arm member connected between said upper and lower bodies, one end of which is pivotally coupled to said upper body while the other end is slidably received in a guide groove formed on said lower body to move between first and second positions as said other end of the upper body moves between open and close positions thereof; and an resilient member secured at one end thereof to said link-arm member for biasing said link-arm member to move toward said first position thereof so that said upper body is biased to move toward the open position thereof, said resilient member being arranged to be linearly stretched and/or contracted upon movement of said link-arm member, wherein an abutting portion is formed on said link-arm member that abuts and bends said resilient member when said upper body is in the vicinity of said lower body.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US581664* Martin et al. Apr 1897
US3287757* DOLO MFG CORP Van Noord Nov 1966
US3643291* REVCO INC Clark Feb 1972
US3810275* GSW APPLIANCES LTD Smith May 1974
US4406379* Westinghouse Electric Corp. Anderson et al. Sep 1983
US4429933* SOKOLOWSKI EUGENE K Sokolowski Feb 1984
US4742598* Alpia S.A. Bruneau May 1988
US4966403* Saab-Scania Aktiebolag Nordstrom Oct 1990
US5121521* Casio Computer Co., Ltd. Hagiwara et al. Jun 1992
US5465557* Koch Supplies, Inc. Harte Nov 1995
US6035490* Xerox Corporation Jones et al. Mar 2000
US6499189* Nisca Corporation Kondo et al. Dec 2002

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
JPA9166829Jun 1997
* cited by examiner

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20030056324 BROTHER KOGYO KABUSHIKI KAISHA Kiyoshi Ueda et al. Mar 2003
US6804858 Brother Kogyo Kabushiki Kaisha Hiroaki Yazawa et al. Oct 2004