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US4236599: Stools

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Filing Information

Inventor(s) Brian A. Luff · Ronald P. Hickman ·
Assignee(s) Inventec Licensing BV ·
Attorney/Agent(s) Brumbaugh, Graves, Donohue & Raymond ·
Primary Examiner Reinaldo P. Machado ·
Application Number US5964357
Filing date 11/28/1978
Issue date 12/02/1980
Predicted expiration date 11/28/1998
U.S. Classifications 182/33  · 182/129  ·
International Classifications A47C 1300  ·
Kind CodeA
International Classifications 18233;33.1;33.2;33.3;33.4;33.5;33.6;20;129;153 ·
Foreign Priority GB4947777 - 11/28/1977 ·
29 Claims, No Drawings


Abstract

In the illustrative embodiments disclosed, a novel step stool structure includes the sitting and climbing features of a traditional step stool and, in addition, a vise unit affording a vise action and a working surface for carpentry or other tasks. The vise unit comprises a pair of relatively movable vise beams, the upper surfaces of which provide the working surface. One or more movable seat-forming members, by themselves or in conjunction with the vise beams, provide a seat for use of the stool in the traditional step stool sense. Movement of the movable member or members allows conversion of the stool from a seat mode of use to a workbench mode of use and vice versa.

Independent Claims | See all claims (29)

  1. 1. In a combined step stool and vise unit having a supporting structure including at least one step and a top structure supported thereon, the improvement comprising:means for providing a vise-unit mode of use of said top structure, said means including (1) first and second elongate members having opposed elongate edges, said elongate members providing an upwardly facing working surface at least when said top structure is in said vise-unit mode of use, and (2) means for urging said elongate members transversely towards and away from each other so as to permit gripping of a workpiece therebetween at least when said top structure is in said vise-unit mode of use; andmeans for providing a seat-unit mode of use of said top structure, said means including (1) means for normally defining an upwardly facing, substantially continuous, seat-forming surface when said top structure is in said seat-unit mode of use and (2) means for permitting movement of at least a part of said seat-forming surface out of seat-forming relation to said supporting structure for permitting conversion of said top structure from said seat-unit mode of use to said vise-unit mode of use.
  2. 11. In a combined step stool and vise unit including a supporting structure having at least one step and a top structure incorporating a seat on which a user may sit or stand, the improvement comprising:means for interchangeably converting said top structure from a seat to a vise unit, said converting means including (1) a pair of vise members having opposed clamping surfaces and operating means for urging said vise members relatively together and apart to provide a gripping action between the clamping surfaces thereof and (2) at least one additional member movable relative to said vise members between a first position, in which said top structure forms a seat and said at least one member forms at least a part thereof, and a second position, in which said at least one member is moved out of seat-forming relation to said vise members and said vise members and operating means are available for use as a vise unit.
  3. 13. The combined step stool and vise unit 11 wherein the upper surface of said at least one additional member, in the first position thereof, forms said seat together with the upper surfaces of said pair of vise members.
  4. 22. In a combined step stool and vise unit including a supporting structure having at least one step and a top structure incorporating a seat on which a user may sit or stand, the improvement in said top structure comprising:a pair of vise members having opposed clamping surfaces;operating means for urging said vise members relatively together and apart to provide a gripping action between the clamping surfaces thereof; andmeans normally forming at least part of said seat and movable between a first position, in which said movable means forms at least a part of said seat, and a second position, in which said movable means is moved out of said seat-forming position and said vise members and operating means are available for use as a vise unit.
  5. 25. A combined step-stool and vise unit comprising a supporting structure which includes at least one step and a top structure carried by the supporting structure, the top structure being convertible between(a) a vise mode in which the top structure affords an upwardly facing pair of side-by-side elongate vise members, the upper surfaces of which are substantially co-planar to provide a substantially flat working surface and the adjacent elongate edges of which provide clamping surfaces, the top structure including means for positively moving at least one vise member transversely relative to the other vise member to provide a clamping gap between said clamping surfaces; and(b) a seating mode in which the top structure affords an upwardly facing, substantially non-interrupted seating surface upon which a person can sit or upon which he can climb by use of said step.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US1827418 BROWN WILLIAM H Brown Oct 1931
US3397757 Greer Aug 1968
US4155386 The Black and Decker Manufacturing Company Alessio May 1979

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
GB791081HENRY WILLIAM SIMSFeb 1958

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US4236599 Inventec Licensing BV Brian A. Luff et al. Dec 1980
GB1604658 INVENTEE LICENSING BV Dec 1981