Door operating mechanism
First Claim
1. A door operating mechanism for use with a door hingedly connected to a door frame for swinging movement with respect thereto between opened and closed positions, comprising:
- extensible spring means biased towards an extended condition connected to said frame, andlinkage means operatively connecting said door and said spring means, and including hold-open means operative to permit said spring means to be selectively moved, when said door is in said opened position, from a first position wherein said door is biased to the closed position to a second position wherein said spring means bias said door toward said opened position to releasably hold the door in the opened position.
6 Assignments
0 Petitions
Accused Products
Abstract
A door-operating mechanism is disclosed which is particularly suited for use with hingedly mounted swinging glass doors of a refrigerated display cabinet. The door operating mechanism includes an extensible gas spring biased toward an extended condition, and a linkage arrangement operatively interconnecting the gas spring with the door. A portion of the gas spring is movably disposed within a slot defined by the linkage arrangement such that in one position of the gas spring the door is biased toward its closed position, and in another position of the gas spring the door may be maintained in an opened position such as for stocking or maintenance of the display cabinet.
15 Citations
15 Claims
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1. A door operating mechanism for use with a door hingedly connected to a door frame for swinging movement with respect thereto between opened and closed positions, comprising:
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extensible spring means biased towards an extended condition connected to said frame, and linkage means operatively connecting said door and said spring means, and including hold-open means operative to permit said spring means to be selectively moved, when said door is in said opened position, from a first position wherein said door is biased to the closed position to a second position wherein said spring means bias said door toward said opened position to releasably hold the door in the opened position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A door operating mechanism for use with a door hingedly connected to a door frame for swinging movement with respect thereto between opened and closed positions, comprising:
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extensible spring means connected to said frame and biased toward an extended condition, linkage means operatively connecting said door and said spring means comprising a link affixed to said door and defining an elongated slot spaced from said door, said spring means having an end portion selectively positionable in said slot when said door is in said opened position, so that when said end portion of said spring means is disposed in a first portion of said slot said spring means is operative to bias said door toward said closed position, and when said end portion of said spring means is disposed in a second portion of said slot said spring means is operative to bias said door toward said opened position to releasably maintain said door in said opened position. - View Dependent Claims (13)
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14. A door operating mechanism for use with a door hingedly connected to a door frame for swinging movement with respect thereto between opened and closed positions, comprising:
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a first link pivotally connected to said frame, a second link extending between and respectively pivotally connected to said first link and said door, extensible spring means extending between said frame and said first link and biased toward an extended condition, said spring means including an end portion selectively positionable in slot means defined by said first link when said door is in said opened position, so that when said end portion of said spring means is disposed in a first portion of said slot means said spring means is operative to bias said door toward said closed position, and when said spring portion is disposed in a second portion of said slot means said spring means is operative to bias said door toward said opened position to releasably maintain said door in the opened position until substantial movement of the door from the opened position moves said spring portion from said second portion of said slot means. - View Dependent Claims (15)
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Specification