Foldable easel

• US 4,609,174 A
• Filed: 11/05/1984
• Issued: 09/02/1986
• Est. Priority Date: 11/05/1984
• Status: Expired due to Fees

• Current Assignee: Velbon International Corporation
• Original Assignee: Velbon International Corporation
• Inventors: Nakatani, Koma
• Primary Examiner(s): Machado, Reinaldo P.
• Assistant Examiner(s): Shue, Alvin Chin
• Application Number:
  US06/668,471
• Time in Patent Office: 666 Days
• Field of Search: 248/460, 248/464, 248/465, 248/449, 248/165, 248/168, 248/463, 182/182
• US Class Current: 248/465
• CPC Class Codes: A47B 97/08 foldable
• CPC Class Codes: F16M 11/046 adapted to upward-downward translation movement
• CPC Class Codes: F16M 11/16 Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
• CPC Class Codes: F16M 11/34 Members limiting spreading of legs , e.g. "umbrella legs"
• CPC Class Codes: F16M 2200/027 by friction

Abstract

A folding easel has three telescoping legs, leg locks for locking each of the legs at arbitrarily extended positions, two tie-bars each hinged at one end to an axle supported on a corresponding leg lock, one tie-bar being snap-engageable to an axle on a third leg lock, the remaining tie-bar being snap-engageable to an intermediate point of the first tie-bar to form a T tie-bar arrangement for maintaining the three legs in fixed spaced apart relationship and usable as a shelf for paint boxes or the like, the tie-bars being readily disengageable without removal of fasteners for folding together of the three legs.

Claims

1. A folding easel having three legs, each leg having an upper end and a lower end, each leg being pivotably interconnected at its upper end to a pivot head to allow pivotal movement of a first and a second leg in a common plane between a folded mutually parallel position and a spaced apart position, a third leg being movable away from said first and second legs in a plane perpendicular to said common plate, each of said legs comprising at least two telescopically slideable leg sections and a first leg lock for securing said leg sections at an arbitrarily extended position against telescoping movement, each said first leg lock including a lock mounting socket, each said socket supporting an axle disposed transversely to said leg, a first rigid tie-bar pivotably attached at one end to said axle on said first leg for movement between a folded and an extended position, the free opposite end of said first tie-bar being releasably engageable in its extended position to said axle on said second leg, and a second rigid tie-bar pivotably attached at one end to said axle on said third leg for movement between a folded position and an extended position, the opposite free end of said second tie-bar in its extended position being releasably engageable to an intermediate point of said first tie-bar thereby to secure said three legs in fixed spaced apart relationship with said two tie-bars forming a figure T usable as a shelf support for paint boxes or the like;

said free ends of both first and second tie-bars being engageable respectively to said axle and said intermediate point by a snap locking engagement readily disengageable without removal of fasteners.

2. The easel of claim 1 further comprising helical coil spring means wound about said axle on said first and third legs and mounted for supporting each of said tie-bars against downward pivotal movement into contact with a ground surface.

3. The easel of claim 1 further comprising spring means for supporting each of said tie-bars when said tie-bars are pivoted towards their extended positions to prevent the free ends of the tie-bars from dropping into contact with the ground.

4. The easel of claim 1 further comprising a second lock slideable along each of said first and second legs and releasably securable to said leg at any arbitrary point between said first lock and said upper end, each said second lock having a pair of ears through which extends one leg of an L-shaped canvas holder, all of said first and second locks being substantially identical except for the elements supported by the ears of each said lock.

5. The easel of claim 1 further comprising an upper canvas holder assembly mounted to said pivot head, said upper canvas holder assembly being adjustable in height relative to said pivot head.

6. The easel of claim 5 wherein said upper canvas holder assembly comprises a vertical slide bar slideable relative to said pivot head, a horizontal slide bar and an upper canvas holder mounted thereto, said horizontal slide bar being mounted to the upper end of said vertical slide bar for pivotal movement in a vertical plane and also for sliding movement relative to said vertical slide bar;

and

first and second fastener means for securing said vertical and horizontal slide bars against movement relative to said pivot head.

7. The easel of claim 6 wherein said canvas holder is a cross-member mounted to said horizontal slide bar in a T-configuration.

8. The easel of claim 7 wherein said cross-member is a U-shaped channel in cross section mounted for receiving the upper edge of a canvas or the like within said channel.

9. The easel of claim 8 further comprising anti-skid means disposed within said channel.