Triaxial universal camera mount

• US 4,341,452 A
• Filed: 08/10/1981
• Issued: 07/27/1982
• Est. Priority Date: 08/10/1981
• Status: Expired due to Fees

• Current Assignee: Dulin & Thienpont Limited
• Original Assignee: Dulin & Thienpont Limited
• Inventors: Korling, Torkel
• Primary Examiner(s): Griffin, Donald A.
• Application Number:
  US06/291,272
• Time in Patent Office: 351 Days
• Field of Search: 354/81, 354/293, 354/294, 248/179, 248/183, 352/197, 352/243
• US Class Current: 396/428
• CPC Class Codes: F16M 11/105 the horizontal axis being the roll axis, e.g. for creating a landscape-portrait rotation
• CPC Class Codes: F16M 11/2064 for tilting and panning F16M11/2078 takes precedence
• CPC Class Codes: G03B 17/561 Support related camera accessories

Abstract

A triaxial (dual biaxial) universal camera mount assembly which permits a camera secured thereto to be independently or simultaneously pivotable about three axes: a vertical axis, a horizontal axis, and a central lens axis. The universal camera mounting has a first yoke pivotally nested in a second yoke to form the horizontal axis. The second yoke is mountable to a tripod so that it may pivot about a vertical axis normal to, but offset behind, the horizontal axis. The second yoke has a pivotable universal camera mounting bracket, the pivot axis of which corresponds to the central lens axis and intersects both the vertical axis and the horizontal axis. The yokes are canted and the vertical and central axis pivots offset so that a camera is completely balanced in the mount. The pivots are specially constructed so that the balanced camera can be moved from one position to another, yet it will stay in the second position without need of a locking means. The mount replaces a conventional tripod pan head and permits angular movement of the camera to any position without changes in view or focus introduction of parallax errors as is the case with conventional tripod mounts. The mount may also have a quick-release bayonet assembly for releasably attaching it to a tripod.

Claims

1. An improved camera mount comprising in operative combination:

(a) a first, outer yoke having a planar base portion and a pair of upstanding arms at opposite ends of said base portion;

(b) a second, inner yoke having a pair of upstanding arms and a planar back portion therebetween;

(c) said inner yoke being nested within and pivotally connected by a pair of pivot assemblies to said first yoke adjacent the ends of the arms thereof, said pivot assemblies being aligned to form a horizontal axis;

(d) said outer yoke having means defining a pivotable connection to a tripod disposed in said base portion for releasably securing said mount on said tripod, said base pivotable connection defining a vertical axis normal to said horizontal axis;

(e) means defining a pivot assembly disposed in said inner yoke back for pivotally securing a camera holder assembly to said inner yoke, said inner yoke back pivot assembly defining a third axis normal to said horizontal and vertical axes;

(f) a universal camera holder assembly means for removably securing a camera secured to said inner yoke by said inner yoke back pivot assebly, said universal camera holder assembly having means for adjusting the position of the axis of a lens of said camera so that said lens axis is collimated with said third axis;

(g) said horizontal axis and said vertical axis intersecting said collimated third, lens axis;

(h) said pivot assemblies, base pivotal connection, and inner yoke back pivot assembly being adapted to provide sufficient frictional resistance to turning to permit said yokes and camera to be pivoted from a first to a second position and remain in said second position to which pivoted;

(i) said yokes and universal camera holder assembly means being adapted to maintain said camera substantially in balance about its center of gravity; and

(j) said elements (a) through (i) incombination providing a triaxial universal camera mount removably securable to a manually portable tripod, and permitting;

(i) rotational movement of said camera from a horizontal to vertical frame orientation around the lens axis, and

(ii) upward or downward tilting of said camera around the horizontal axis

without introduction of translational or parallax errors necessitating reframing or refocusing of the camera, and without manipulation of pivot releasing/tightening levers.

2. An improved camera mount as in claim 1 wherein said pivot assemblies and said inner yoke back pivot assembly comprise in operative combination:

(a) a threaded nut having an enlarged head and a tubular shank portion;

(b) a lock washer having an enlarged annular ring portion and a tubular shank portion terminating in a transverse slot;

(c) a pair of planar, annular, low friction washers;

(d) a bolt having a threaded shank, an enlarged head, and a transverse key disposed on the inner face of said head intersecting said threaded shank;

(e) said low friction washers being disposed on each side of a movable member of said camera mount between said screw and said lock washer;

(f) said tubular shank of said lock washer extending axially so that said slot receives said key and provides between the inner surface of said annular ring and the inner surface of said bolt head space sufficient to accommodate both low friction washers and at least one movable member of said mount;

(g) said bolt threads engageable with said nut threads to provide sufficient compression of said low friction washers at annular peripheries thereof in contact with movable members of said mount in contact therewith so that said movable members may be manually easily moved with respect to each other and will stay in the position to which moved without unscrewing said assemblies or tightening them after each repositioning.

3. An improved camera mount as in claim 2 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

4. An improved camera mount as in claim 2 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

5. An improved camera mount as in claim 4 wherein:

(a) said intersection of said lens axis with said vertical axis is spaced axially apart from said intersection of said lens axis with said horizontal axis forming a dual, biaxial system.

6. An improved camera mount as in claim 5 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

7. An improved camera mount as in claim 5 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

8. An improved camera mount as in claim 2 wherein:

(a) at least one of said yokes is adapted so that said arms thereof are canted at an angle from said back or base plates, respectively.

9. An improved camera mount as in claim 8 wherein:

(a) said inner yoke back pivot and said pivotal connection disposed in said outer yoke base portion are each offset equally to one side of a centerline defined between said yoke arms, and said back pivot and pivotal connection are aligned so that said lens axis intersects said vertical axis.

10. An improved camera mount as in claim 9 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

11. An improved camera mount as in claim 10 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

12. An improved camera mount as in claim 10 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

13. An improved camera mount as in claim 10 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

14. An improved camera mount as in claim 2 wherein:

(a) said intersection of said lens axis with said vertical axis is spaced axially apart from said intersection of said lens axis with said horizontal axis forming a dual, biaxial system.

15. An improved camera mount as in claim 14 wherein:

(a) at least one of said yokes is adapted so that said arms thereof are canted at an angle from said back or base plates, respectively.

16. An improved camera mount as in claim 15 wherein:

(a) said inner yoke back pivot and said pivotal connection disposed in said outer yoke base portion are each offset equally to one side of a centerline defined between said yoke arms, and said back pivot and pivotal connection are aligned so that said lens axis intersects said vertical axis.

17. An improved camera mount as in claim 16 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

18. An improved camera mount as in claim 17 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

19. An improved camera mount as in claim 17 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

20. An improved camera mount as in claim 17 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

21. An improved camera mount as in claim 2 wherein:

(a) said inner yoke back pivot and said pivotal connection disposed in said outer yoke base portion are each aligned with the centerline defined equidistant between said yokes.

22. An improved camera mount as in claim 21 wherein:

(a) at least one of said yokes is adapted so that said arms thereof are canted at an angle from said back or base plates, respectively.

23. An improved camera mount as in claim 22 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

24. An improved camera mount as in claim 23 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

25. An improved camera mount as in claim 23 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

26. An improved camera mount as in claim 23 where at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

27. An improved camera mount as in claim 1 wherein said three axes intersect substantially at a single point.

28. An improved camera mount as in claim 27 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

29. An improved camera mount as in claim 28 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

30. An improved camera mount as in claim 28 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

31. An improved camera mount as in claim 27 wherein said pivot assemblies and said inner yoke back pivot assembly comprise in operative combination:

(a) a threaded nut having an enlarged head and a tubular shank portion;

(b) a lock washer having an enlarged annular ring portion and a tubular shank portion terminating in a transverse slot;

(c) a pair of planar, annular, low friction washers;

(d) a bolt having a threaded shank, an enlarged head, and a transverse key disposed on the inner face of said head intersecting said threaded shank;

(e) said low friction washers being disposed on each side of a movable member of said camera mount between said screw and said lock washer;

(f) said tubular shank of said lock washer extending axially so that said slot receives said key and provides between the inner surface of said annular ring and the inner surface of said bolt head space sufficient to accommodate both low friction washers and at least one movable member of said mount;

(g) said bolt threads engageable with said nut threads to provide sufficient compression of said low friction washers at annular peripheries thereof in contact with movable members of said mount in contact therewith so that said movable members may be manually easily moved with respect to each other and will stay in the position to which moved without unscrewing said assemblies or tightening them after each repositioning.

32. An improved camera mount as in claim 31 wherein:

(a) said inner yoke back pivot and said pivotal connection disposed in said outer yoke base portion are each aligned with the centerline defined equidistant between said yokes.

33. An improved camera mount as in claim 32 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

34. An improved camera mount as in claim 33 wherein said pivotal connection to a tripod includes:

(a) first bayonet means for quick-connect, quick-disconnect from a second, mating bayonet means connected to said tripod.

35. An improved camera mount as in claim 34 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

36. An improved camera mount as in claim 34 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

37. An improved camera mount as in claim 34 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

38. An improved camera mount as in claim 34 which includes:

(a) bracket means disposed intermediate said mount and said tripod for orienting said mount with said outer yoke at right angles to the horizontal to permit said lens axis to be directed vertically downwardly.

39. An improved camera mount as in claim 1 wherein at least one of said pivot assemblies, said outer yoke pivotal connection, and said inner yoke back pivot assembly having means for identifying angular position disposed in association therewith so that the position and change in position upon movement of the camera about one or more of the said three axes can be determined.

40. An improved camera mount as in claim 1 wherein at least one of said pivot assemblies and said inner yoke back pivot assembly:

(a) said threaded bolt shank is a tubular member, the inner surface of which defines a threaded hole extending axially therethrough for securing accessories by means of a threaded bolt mating therewith.

41. An improved camera mount as in claim 1 wherein:

(a) said intersection of said lens axis with said vertical axis is spaced axially apart from said intersection of said lens axis with said horizontal axis forming a dual, biaxial system.