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US 4,988,214 AGranted
Sequential drawer slide
AssigneeKnape & Vogt Manufacturing Company
InventorGene R. Clement
Life of this patent
Estimating the term…
Abstract
The specification discloses a sequential drawer slide having a simple yet positively reliable sequencing mechanism. The mechanism includes a gravity operable control lever carried by the intermediate slide member and shiftable at the transition point between two positions, each wherein either the cabinet or drawer slide member is interlocked with the intermediate member. The single control lever therefore provides full sequencing of the slide members.
Claims28
A sequential drawer slide comprising:
- a cabinet slide member;
- an intermediate slide member mounted for linear movement with respect to said cabinet slide member between extended and retracted positions;
- a drawer slide member mounted for linear movement with respect to said intermediate slide member between extended and retracted positions;
- and
- sequencing means for sequencing the operation of said slide members so that only one of said cabinet and drawer slide members is permitted to move with respect to said intermediate slide member at any given position of said slide members, said sequencing means including a control lever member shiftably supported by said intermediate slide member between first and second positions, said sequencing means further including first and second engagement means on said drawer and cabinet slide members, respectively, said control lever member coacting with said first engagement means when in the first position and with said second engagement means when in the second position to aid in interlocking said intermediate slide member with the one of said cabinet and drawer slide members carrying the coacting engagement means, said control lever member being shiftable between the first and second positions when said intermediate rail is in its extended position and said drawer rail is in its retracted position.
2 more elements
An improved sequential drawer slide comprising:
- cabinet, intermediate, and drawer slide members;
- antifriction means for slidingly interfitting each of said cabinet and drawer slide members with said intermediate slide member for relative linear movement;
- stop means for limiting the extent to which both of said cabinet and drawer slide members can be moved with respect to said intermediate slide member;
- sequencing means for permitting relative movement between only one of said cabinet and drawer slide members and said intermediate slide member at substantially all times;
- wherein the improvement comprises said sequencing means comprising a control element supported by said intermediate slide member and shiftable between first and second positions, said control element when in the first position engaging said drawer slide member and cooperating with said stop means to prevent relative movement between said drawer and intermediate slide members, said control element when in said second position engaging said cabinet slide member and cooperating with said stop means to prevent relative movement between said cabinet and intermediate slide members.
2 more elements
A sequential drawer slide comprising:
- a cabinet slide member;
- an intermediate slide member slidingly interfitted with said cabinet slide member and movable with respect thereto between extended and retracted positions;
- a drawer slide member slidingly interfitted with said intermediate slide member and movable with respect thereto between extended and locked positions:
- and
- sequencing means for sequencing the movement of said slide members, said sequencing means including a cabinet engagement means and a drawer engagement means on said cabinet and drawer slide members, respectively, and a shifting control lever carried by said intermediate slide member and shiftable between first and second positions when one of said intermediate and drawer slide members is fully retracted and the other of said slide members is fully extended, said shifting control lever engaging said drawer engagement means when in the first position to restrict movement between said one slide member and said intermediate slide member, said shifting control lever engaging said cabinet engagement means when in the second position to restrict movement between said other slide member and said intermediate slide member, whereby said sequencing means permits only one of said channel and drawer slide members to move relative said intermediate slide member at substantially all times.
2 more elements
A sequential drawer slide assembly comprising:
- a cabinet slide;
- an intermediate slide interfitted with said cabinet slide and movable between extended and retracted positions;
- a drawer slide interfitted with said intermediate slide and movable between extended and retracted positions;
- and
- sequencing control means for controlling the movement of said intermediate and drawer slides, said control means including a gravity operable control latch on said intermediate slide and engageable with said cabinet and drawer slides, said control latch latching said drawer and intermediate slides together in retracted condition relative to each other when said intermediate slide is in other than a fully extended condition relative to said cabinet slide, said control latch being releasable by said cabinet slide at full extension of said intermediate slide relative to said cabinet slide to allow extension of said drawer slide relative to said intermediate slide.
2 more elements
A sequential drawer slide comprising:
- a cabinet slide member;
- an intermediate slide member slidingly interfitted with said cabinet slide member and movable with respect thereto between extended and retracted positions;
- a drawer slide member slidingly interfitted with said intermediate slide member and movable with respect thereto between extended and locked positions;
- and
- sequencing means for sequencing the movement of said slide members, said sequencing means including a single control element carried by said intermediate slide member and sequentially engageable with said cabinet and drawer slide members, said control element engaging said drawer slide member and maintaining said drawer slide member in its retracted position with respect to said intermediate slide when said intermediate slide member is in other than its extended position, said control element engaging said cabinet slide member and maintaining said intermediate slide member in its extended position with respect to said cabinet slide member during movement of said drawer slide member with respect to said intermediate slide member.
2 more elements
An improved sequential drawer slide comprising:
- cabinet, intermediate, and drawer slide members;
- antifriction means for slidingly interfitting each of said cabinet and drawer slide members with said intermediate slide member for relative linear movement;
- stop means for limiting movement of said intermediate slide member with respect to said cabinet slide member between retracted and extended positions and for limiting movement of said drawer slide member with respect to said intermediate slide member between retracted and extended positions;
- sequencing means for permitting relative movement between only one of said cabinet and drawer slide members and said intermediate slide member at substantially all times;
- wherein the improvement comprises said sequencing means comprising:
- a control element carried directly by said intermediate slide member;
- and
- cabinet and drawer engagement means mounted directly on said cabinet and drawer slide members, respectively, sequentially engageable by said control element, said control element engaging said drawer engagement means to hold said drawer slide member in its retracted position during relative movement of said intermediate and cabinet slide members, said control element engaging said cabinet engagement means to hold said intermediate slide member in its extended position during relative movement of said drawer and intermediate slide members.
5 more elements
An improved three member drawer slide of the type having a drawer slide affixed to an intermediate member and a cabinet slide positioned below said drawer slide and affixed to said intermediate member, said drawer slide having a drawer slide outer member, a drawer slide inner member and said drawer slide having a plurality of ball bearings held by an upper ball retainer and said cabinet slide having a cabinet slide outer member, a cabinet slide inner member and a plurality of ball bearings held by a lower ball retainer wherein the improvement comprises means to cause the movement of the lower ball retainer to occur before the movement of the upper ball retainer, said means comprising:
- releasable gripping means affixed to said intermediate member and contacting and holding the drawer slide outer member when said drawer slide outer member is fully retracted and releasing its grip on the drawer slide outer member when said cabinet slide outer member is fully extended, whereby when said three member drawer slide is extended from a fully retracted position, the cabinet slide outer member will move outwardly completely before the drawer slide outer member will move with respect to the drawer slide inner member;
- said releasable gripping means comprising a pivotable arm held by said intermediate member between the outer members of the drawer and cabinet slides, said pivotable arm resting on the upper surface of the cabinet slide outer member and having an upwardly extending finger contacting a receiver on the underside of the drawer slide outer member and said pivotable arm being positioned to fall downwardly slightly when said cabinet slide outer member is fully extended, thereby causing said upwardly extending finger to release its contact against the catch allowing the drawer slide outer member to extend from its inner member.
Dependencies are inferred from the claim text.