Projector holder

• US 20060186309A1
• Filed: 03/09/2004
• Published: 08/24/2006
• Est. Priority Date: 03/25/2003
• Status: Active Grant

• Current Assignee: EFAB - ERIK Frisell AB
• Original Assignee: EFAB - ERIK Frisell AB
• Inventors: Lonnqvist, Hans
• Granted Patent: US 7,455,273 B2
• Time in Patent Office: Days
• US Class Current: 248/560
• CPC Class Codes: F16M 11/043 Allowing translations
• CPC Class Codes: F16M 11/12 in more than one direction
• CPC Class Codes: F16M 11/14 with ball-joint ball-jointed hinges F16C11/06 ; adjustable mountings employing universal joints for lighting devices F21V21/26 - F21V21/30

Abstract

A projector holder comprising a connecting element (2) which includes a coupling element (23) for connection of the projector holder to a supporting structure, and at least three arms (1) which are carried by the connecting element for rotation about mutually parallel axes and for radial displacement relative to said axes, so that a first end (10) of the arms (1) can be brought into alignment with threaded openings (42) in a wall (41) of a projector housing, wherein each arm (1) carries a coupling device (3) for connecting said first end of a respective arm to a nearby threaded opening (42) in the wall of said housing, and wherein the connecting element (2) is adapted to releasably secure the second end portions (12) of the connected arms. The coupling device (3) includes a screw (31) which extends through an opening (11) through the first end portion (10) of a respective arm (1) with a given degree of clearance, and two nuts (33, 34) which co-act with the thread on the screw (31) and each of which is mounted on a respective side of said arm (1), wherein the thread on the screw (31) is able to co-act with the thread in the opening (42) of the projector housing wall, such as to enable the screw (31) to be screwed to a desired depth in threaded openings (42) in said housing wall (41), wherein the nuts (33, 34) can be moved along the screw (31) in a manner to locate the arm (1) at a chosen distance from the housing wall (41) and such as to be tightened against said arm and therewith secure the screw (31) against rotation.

Claims

1. A projector holder comprising a connecting element (2) which includes a coupling element (23) for connection of the projector holder to a supporting structure, and at least three arms (1) which are carried by the connecting element for rotation about mutually parallel axes and for radial displacement relative to said axes, so that a first end (10) of the arms (1) can be brought into alignment with threaded openings (42) in a wall (41) of a projector housing, wherein each arm (1) carries a coupling device (3) for connecting said first end of a respective arm to a nearby threaded opening (42) in the wall of said housing, and wherein the connecting element (2) is adapted to releasably secure the second end portions (12) of the connected arms, characterised in that the coupling device (3) includes a screw (31) which extends through an opening (11) through the first end portion (10) of a respective arm (1) with a given degree of clearance, and two nuts (33, 34) which co-act with the thread on the screw (31) and each of which is mounted on a respective side of said arm (1), wherein the thread on the screw (31) is able to co-act with the thread in the opening (42) of the projector housing wall, such as to enable the screw (31) to be screwed to a desired depth in threaded openings (42) in said housing wall (41), wherein the nuts (33, 34) can be moved along the screw (31) in a manner to locate the arm (1) at a chosen distance from the housing wall (41) and such as to be tightened against said arm and therewith secure the screw (31) against rotation.

2. A projector holder according to claim 1, characterised in that the connecting element (2) includes a screw (21) and a nut (24) which co-acts with said screw (21), of the connecting element, wherein second ends (12) of respective arms (1) include an elongate slot (13) through which the screw (21) of said connecting element (2) extends, and wherein the screw (21) of said connecting element extends through slots (13) such as to enable a stack of arms (1) to be clamped stably to the connecting element.

3. A projector holder according to claim 2, characterised in that the slots (13) in respective arms are open towards said second end (12) of the arms.

4. A projector holder according to claim 1, characterised in that the arms (1) have generally a flat cross-sectional profile so as to support stably against each other in the connecting element (2).

5. A projector holder according to claim 1, characterised in that the arms (1) are generally straight, so as to extend generally radially to the screw (21) of the connecting element that carries the tightening nut (24) of said element (2).

6. A projector holder according to claim 5, characterised in that the further screw (21) of the connecting element (2) includes a shoulder (22) that supports against an adjacent arm (1).

7. A projector holder according to claim 2, characterised in that the arms (1) have generally a flat cross-sectional profile so as to support stably against each other in the connecting element (2).

8. A projector holder according to claim 3, characterised in that the arms (1) have generally a flat cross-sectional profile so as to support stably against each other in the connecting element (2).

9. A projector holder according to claim 2, characterised in that the arms (1) are generally straight, so as to extend generally radially to the screw (21) of the connecting element that carries the tightening nut (24) of said element (2).

10. A projector holder according to claim 3, characterised in that the arms (1) are generally straight, so as to extend generally radially to the screw (21) of the connecting element that carries the tightening nut (24) of said element (2).

11. A projector holder according to claim 4, characterised in that the arms (1) are generally straight, so as to extend generally radially to the screw (21) of the connecting element that carries the tightening nut (24) of said element (2).