[특허]Anti-tip hinge device and method

Anti-tip hinge device and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E05F-001/08 E05D-011/06 F23M-007/00 A47B-088/00
출원번호	US-0956227 (1992-10-05)
발명자 / 주소	Hannan Edward J. (Muncy PA) Schneider George H. (Williamsport PA)
출원인 / 주소	Keystone Friction Hinge Co. (South Williamsport PA 02)
인용정보	피인용 횟수 : 27 인용 특허 : 0

초록 ▼

An anti-tip hinge device for a door or a shelf, which is pivotally moved to obtain a horizontal cantilever position. The hinge device has a channel which fits into a sheath of and is connected to the door or shelf. A lever arm carries cam followers which engage a cam in the channel. The cam is supported in the channel by a pin and a spring located on opposite ends of the cam. The cam has a recess and a ramp disposed adjacent to the recess. When an overload is applied to the cantilever end of the door or shelf, the cam followers are disengaged from the recess of the cam, and push the cam inwardly within the channel at an angle to allow the door or shelf to be titled downwardly below the horizontal. This action interrupts the counterbalance spring effect on the door. A pin-hole arrangement resets the hinge device, and a lug-slot arrangement prevents the door from disengaging the hinge device.

대표청구항 ▼

A release hinge device for releasing a door when an overload is applied to said door, and said door is pivotally secured to a unit for pivotal movement in a first angular direction and for retaining said door in a generally horizontal position in a cantilever fashion relative to said unit, and wherein said door has sheath means for receiving said release hinge device, said release hinge device comprising: a lever arm having a first and a second end, counterbalance spring means having one end attached to said first end of said lever arm and another end attached to said unit for allowing said pivotal movement of and said retaining of said door in said horizontal position, cam follower means rotatably mounted to said second end of said lever arm, channel means secured in said sheath means of said door and having elongated slot means and connected to said door and to said unit for said pivotal movement of said door, cam means mounted in said channel means and having a recess and ramp means located adjacent to said recess, and being disposed between said slot means of said channel means, said cam follower means engageable with said cam means and having mounting means for said rotatable mounting of said cam follower means to said lever arm and engageable with said slot means, and being in an operative position when in said recess of said cam means, and biasing means connected to said cam means and said channel means for allowing movement of said cam means and movement of said cam follower means from said recess and along said ramp means of said cam means, and for causing said mounting means of said cam follower means to move along said slot means of said channel means to interrupt the effect of said counterbalance spring means on said hinge device and to allow further angular displacement of said door from said horizontal position when said overload is applied to said door. A method for safely releasing a door pivotally connected to a unit by a hinge device when an excessive load is placed on said door when in an open condition, to prevent said unit from falling over, the steps comprising: attaching a first part of said hinge device to said unit and a second part to said door, providing a lever arm connected at one end to a counterbalance spring means in said unit and cam follower means mounted on the other end of said lever arm, providing cam means in said second part of said hinge device and having a recess and adjacent ramp means, engaging said cam follower means in said recess of said cam means for an operative condition of said door from a generally vertical position parallel to said unit, to a generally horizontal and cantilevered position, relative to said unit, providing biasing means connected to and on either side of said cam means for allowing pivotal movement of said cam means, applying said excessive load on said door, and causing said biasing means in close proximity to the cantilevered end of said door to be compressed and said cam means to be pivotted thereby forcing said cam follower means to be snapped out of said recess of said cam means and to engage and travel along said ramp portion of said cam means, resulting in said door being released from the effect of said hinge device.

이 특허를 인용한 특허 (27)

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Habegger, Jeffrey D.; Cummins, Steven O.; Cummins, Bruce M., Single link hinge assembly with break-away link.
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Zetti, Arrigo, Sprung hinge for closing compartment elements and the like.
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