Office Action 3: Final Rejection (2025-04-28)
Rejection types: 102 - Lack of Novelty

CLAIMS:
Amendments to ClaimsThis listing of claims will replace all prior versions and listings of claims in the application.

1\. (Currently amended) A one-step locking stand, comprising: a fixing portion and at least one supporting leg connected to the fixing portion, wherein the supporting leg comprises:
first, second and third sections connected one another along an axial direction, each section being movable axially relative to other sections to extend or shorten the supporting leg;
an operating assembly arranged at one of the sections;
a first transmission assembly connected to the operating assembly;
a first locking assembly fixedly arranged at the second section, slidably connected to the first section, and connected to the first transmission assembly;
a second transmission assembly, slidable through a lumen of the second section, connected to the first locking assembly, as well as arranged spaced apart from the first transmission assembly; and
a second locking assembly arranged at the third section and connected to the second transmission assembly;
wherein when the operating assembly is operated, a movement of the operating assembly synchronously causes the first locking assembly o move \[\[axially\]\] in the axial direction relative to the first section through the first transmission assembly, to thereby lock or release the first section relative to the second section, and meanwhile, a movement of the first locking assembly synchronously causes the second transmission assembly o move \[\[axially\]\] in the axial direction, and the second locking assembly is driven by the second transmission assembly to lock or release the third section relative to the second section, so as to achieve one-step locking or releasing of all the sections of the supporting leg; and
wherein the first transmission assembly comprises:
a driving rod connected to the operating assembly and extending axially;
a hollow screw mounted around one end of the driving rod away from the operating assembly and connected to the first locking assembly; and
a fixing nut threadedly connected to an outer periphery of the hollow screw,
wherein the operating assembly is configured to drive the driving rod to rotate axially, and when the driving rod rotates, the hollow screw moves axially under joint action of the driving rod and the fixing nut, driving the first locking assembly to move axially.

2\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein the operating assembly is arranged at an end of the first section away from the second section.

3\. (Cancelled)

4\. (Currently amended)The stand according to claim \[\[1\]\]5, wherein the hollow screw and the driving rod are connected in a form-fit manner, wherein when the driving rod rotates, the hollow screw rotates together therewith.

5\. (Currently amended) one-step locking stand, comprising: a fixing portion and at least one supporting leg connected to the fixing portion, wherein the supporting leg comprises:
first, second and third sections connected one another along an axial direction, each section being movable axially relative to other sections to extend or shorten the supporting leg;
an operating assembly arranged at one of the sections;
a first transmission assembly connected to the operating assembly;
a first locking assembly fixedly arranged at the second section, slidably connected to the first section, and connected to the first transmission assembly;
a second transmission assembly, slidable through a lumen of the second section, connected to the first locking assembly, as well as arranged spaced apart from the first transmission assembly; and
a second locking assembly arranged at the third section and connected to the second transmission assembly;
wherein when the operating assembly is operated, the first locking assembly is driven by the first transmission assembly to move axially, to lock or release the first section relative to the second section, and meanwhile, the second transmission assembly is driven by the first locking assembly to move axially, and the second locking assembly is driven by the second transmission assembly to lock or release the third section relative to the second section, so as to achieve one-step locking or releasing of all the sections of the supporting leg;
wherein the first transmission assembly comprises:
a driving rod connected to the operating assembly and extending axially;
a hollow screw mounted around one end of the driving rod away from the operating assembly and connected to the first locking assembly; and
a fixing nut threadedly connected to an outer periphery of the hollow screw,
wherein the operating assembly is configured to drive the driving rod to rotate axially, and when the driving rod rotates, the hollow screw moves axially under joint action of the driving rod and the fixing nut, driving the first locking assembly to move axially; and
wherein the first locking assembly comprises a sliding seat respectively mounted around the first and second sections, as well as an adjusting member and a locking block movably arranged within the sliding seat; wherein the adjusting member is connected to the second transmission assembly and defines a through hole penetrating axially, a top end of the hollow screw passes through the through hole from bottom to top and is then connected to the fixing nut, the fixing nut is fixedly arranged within the sliding seat, a bottom end of the hollow screw supports a bottom end of the adjusting member, and the locking block is arranged between the adjusting member and the first section; wherein when the hollow screw moves axially, the adjusting member moves axially together therewith, thereby driving the locking block to move towards or away from the first section, and the adjusting member drives the second transmission assembly to move axially at the same time.

6\. (Original) The stand according to claim 5, wherein the adjusting member comprises an upper slider, an ejecting slider and a supporting slider deposed in axial order, the upper slider is configured to drive the locking block to move towards or away from the first section, the ejecting slider has an ejecting portion protruding out from the sliding seat, and the supporting slider is connected to the sliding seat through the ejecting portion, and wherein when the ejecting portion is operated, the ejecting slider drives the upper slider to move axially.

7\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein the first section comprises two first pipes respectively spaced apart on both sides of the driving rod, the second section comprises two second pipes respectively spaced apart on both sides of the driving rod, each second pipe is movable axially between the driving rod and a corresponding first pipe, and
the third section comprises a third pipe movable to mount around the driving rod.

8\. (Original) The stand according to claim 7, wherein the second section further comprises a hollow central shaft extending axially, and the third pipe is movable to be inserted into a lumen of the central shaft.

9\. (Previously presented) The stand according to claim 7, wherein the adjusting member defines one or more perforations running axially therethrough, the second transmission assembly successively passes through a lumen of one second pipe, the one or more perforations, and a lumen of another second pipe, and then connects to the second locking assembly.

10\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein the second transmission assembly is a cable.

11\. (Original) The stand according to claim 7, wherein the second locking assembly comprises a locking ring and a locking piece, the locking piece defines a locking cavity and is connected to one end of the second transmission assembly, wherein the locking ring comprises a surrounding segment mounted around the third pipe and two free segments respectively connected to both ends of the surrounding segment and received within the locking cavity, and wherein when the second transmission assembly moves axially, the locking piece is driven to move axially together therewith, and the locking cavity matches with the two free segments to bring them to move towards or away from each other, such that the surrounding segment locks or releases the third pipe.

12\. (Original) The stand according to claim 6, wherein one side of the supporting slider is provided with a limiter which defines a fixing hole, and the ejecting portion passes through the fixing hole and extends outside the sliding seat.

13\. (Original) The stand according to claim 6, wherein the ejecting portion is an adjusting screw threaded to the ejecting slider.

14\. (Original) The stand according to claim 6, wherein an extension direction of the ejecting portion is substantially perpendicular to the axial direction.

15\. (Previously presented) The stand according to claim 9, wherein a number of the perforations is two, and the adjusting member is recessed with a groove for holding the second transmission assembly, with the two perforations respectively located at each end of the groove.

16\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein the at least one supporting leg comprises three supporting legs.

17\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein the operating assembly comprises a supporter,
a pivot pin rotatably arranged on the supporter and in torque transmission connection with the driving rod, and
a handle connected to the pivot pin,
wherein when the handle is operated, the pivot pin is brought to rotate by the handle, and the driving rod is driven to rotate about a central axis thereof by the pivot pin.

18\. (Original) The stand according to claim 17, wherein a first bevel gear is provided on an outer periphery of the pivot pin, a second bevel gear, which engages with the first bevel gear, is provided on an upper end of the driving rod, and the first bevel gear is arranged perpendicular to the second bevel gear.

19\. (Currently amended) The stand according to claim \[\[1\]\]5, wherein an outer periphery of the hollow screw is provided with an external thread threaded to the fixing nut.

20\. (Original) The stand according to claim 19, wherein an axial length of the external thread of the hollow screw is greater than an axial length of the fixing nut.

21\. (New) The stand according to claim 1, wherein the first locking assembly comprises a sliding seat respectively mounted around the first and second sections, as well as an adjusting member and a locking block movably arranged within the sliding seat; wherein the adjusting member is connected to the second transmission assembly and defines a through hole penetrating axially, a top end of the hollow screw passes through the through hole from bottom to top and is then connected to the fixing nut, the fixing nut is fixedly arranged within the sliding seat, a bottom end of the hollow screw supports a bottom end of the adjusting member, and the locking block is arranged between the adjusting member and the first section; wherein when the hollow screw moves axially, the adjusting member moves axially together therewith, thereby driving the locking block to move towards or away from the first section, and the adjusting member drives the second transmission assembly to move axially at the same time.

OFFICE ACTION:
DETAILED ACTION
Notice of Pre-AIA  or AIA  Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Amendment filed 4/15/2025 has been entered.  Claims 1-2 and 4-21 remain pending in the present application.
Claim Rejections - 35 USC § 102
The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action.
Claims 1-2, 4 and 16-19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Liang CN 112856168 (hereinafter Liang).
Re. Cl. 1, Liang discloses: A one-step locking stand (Fig. 1), comprising: a fixing portion (100, Fig. 1) and at least one supporting leg (1, Fig. 1) connected to the fixing portion (see Fig. 1), wherein the supporting leg comprises: first, second and third sections (1a, 1b and 1c, Fig. 4) connected one another along an axial direction (see Fig. 4), each section being movable axially relative to other sections to extend or shorten the supporting leg (translated Abstract, Lines 5-8); an operating assembly (23, 3, Fig. 1-5) arranged at one of the sections (see Fig. 5); a first transmission assembly (21, 22, 24 and upper 4, Fig. 1-5) connected to the operating assembly (see Fig. 1-5); a first locking assembly (upper 2, Fig. 5) fixedly arranged at the second section (see Fig. 5), slidably connected to the first section (see Fig. 1-5), and connected to the first transmission assembly (see Fig. 1-5); a second transmission assembly (lower 4, Fig. 5), slidable through a lumen of the second section (see Fig. 5), connected to the first locking assembly (see Fig. 5), as well as arranged spaced apart from the first transmission assembly (see Fig. 5); and a second locking assembly (lower 2, Fig. 5) arranged at the third section and connected to the second transmission assembly (see Fig. 5); wherein when the operating assembly is operated, a movement of the operating assembly synchronously causes the first locking assembly to move in the axial direction relative to the first section through the first transmission assembly to thereby lock or release the first section relative to the second section, and meanwhile, a movement of the first locking assembly synchronously causes the second transmission assembly to move in the axial direction and the second locking assembly is driven by the second transmission assembly to lock or release the third section relative to the second section, so as to achieve one-step locking or releasing of all the sections of the supporting leg (see Fig. 1-5, Paragraphs 0056 and 0063; as discussed in Paragraph 0063, when 3 drives 2, rod 4 rotates which drives portions 10 in an axial direction (i.e. “downward” and “upward”) to lock/unlock the locking assemblies simultaneously; in other words, portions 10 of the locking assemblies are driven axially to lock/unlock the leg components); and wherein the first transmission assembly comprises: a driving rod (4, Fig. 8) connected to the operating assembly and extending axially (see Fig. 4-5 and 8);a hollow screw (5, Fig. 10) mounted around one end of the driving rod away from the operating assembly and connected to the first locking assembly (see Fig. 5); and a fixing nut (7, Fig. 10) threadedly connected to an outer periphery of the hollow screw (see Fig. 8-10), wherein the operating assembly is configured to drive the driving rod to rotate axially (see Fig. 10, so that the threads on 5 engage with the threads in 7), and when the driving rod rotates, the hollow screw moves axially under joint action of the driving rod and the fixing nut, driving the first locking assembly to move axially (see Fig. 8-10, once the handle is rotated, the gears 22, 24 mesh, driving the 4 to rotate and thus bias 11 axially outward).
Allowable Subject Matter
Claims 2 and 4-20 are allowable over the prior art of record.
Claim 21 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims.
Response to Arguments
Applicant's arguments filed 4/15/2025 have been fully considered but they are not persuasive.
Re. Applicant’s argument that Liang does not disclose the limitation “wherein when the operating assembly is operated, a movement of the operating assembly synchronously causes the first locking assembly to move in the axial direction relative to the first section through the first transmission assembly to thereby lock or release the first section relative to the second section, and meanwhile, a movement of the first locking assembly synchronously causes the second transmission assembly to move in the axial direction and the second locking assembly is driven by the second transmission assembly to lock or release the third section relative to the second section, so as to achieve one-step locking or releasing of all the sections of the supporting leg,” the Examiner disagrees. As discussed above, Liang’s component (10), which is part of the locking assembly (2) moves axially (i.e. upward and downward) within the legs to provide force expanding/contracting elements (11) and thus achieving the locking/unlocking effect as discussed in Paragraph 0063 of the Liang translation.  Therefore, it is the Examiner’s position that Lian meets Applicants current claim language and Applicant’s arguments are considered but are not persuasive.
Re. Applicant’s argument that Liang does not disclose Applicant’s one-step locking or releasing of all the sections of the support leg, the Examiner disagrees.  As can be seen in Figs. 1-5, the transmission rod (4) is a continuous rod which has two parts, one connecting the top member (3) and top locking unit (2) and one connecting the two locking units (2).  Therefore, it is the Examiner’s position that by rotating the transmission rod using handle (23) as discussed, one would achieve a one-step locking of both locking unit (2).  Further, in Paragraph 0053 of the attached translation, Liang states: “When the tensioning component 2 contracts, the second leg segment 1b can slide axially relative to the first leg segment 1a, and the third leg segment 1c can slide axially relative to the second leg segment 1b, so as to adjust the length of the supporting leg 1. After the length is adjusted, the control component 3 drives the transmission rod 4 to make the tensioning component 2 expand and press against the inner wall of the first leg segment 1a and the inner wall of the second leg segment 1b, so that the second leg segment 1b is locked relative to the first leg segment 1a, and the third leg segment 1c is locked relative to the second leg segment 1b, so as to achieve adjustment and locking.”  It is the Examiner’s position that this cited text supports the Examiner’s understanding of how the one-step locking/unlocking is achieved by Liang.  Applicant’s argument has been considered but is not persuasive.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Baker US 5320316, Brady US 2018/0252354, HE US 2021/0010637 and Speggiorin US 2022/0291574 disclose other one step locking stands which are presented to the Applicant fort their consideration.
THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a).
A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action.

APPLICANT REBUTTAL: REMARKSClaims 2 and 4-20 are now pending. Claims 1 and 21 has been cancelled. No new matter is involved. The examiner is required to enter the same.Allowable Subject Matter Applicant notes with appreciation that claims 2 and 4-20 are allowable over the prior art.Claim Rejections-35 USC  § 102 Claim 1 stands rejected to under 35 U.S.C. 112(a)(1) as being anticipated by Liang CN 112856168 (hereinafter Liang).In response, claim 1 and claim 21 depending on claim 1 have been cancelled without prejudice or disclaimer.Therefore, withdrawal of the above rejections is respectfully required.CONCLUSIONFor at least the foregoing reasons, it is believed that all the pending claims of the present application are in proper condition for allowance. An action to such effect is earnestly requested.Respectfully Submitted, Kevin P. Chen /Kevin P. Chen/ Registration No. 76206 6

NEXT OFFICE ACTION: DETAILED ACTION
Notice of Pre-AIA  or AIA  Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Amendment filed 6/27/2025 has been entered.  Claims 2 and 4-20 remain pending in the present application.
Allowable Subject Matter
Claims 2 and 4-20 are allowable over the prior art of record.
The following is an examiner’s statement of reasons for allowance: In the Final Rejection dated 4/28/2025, the Examiner rejected claim 1 in view of Liang CN 112856168 and indicated claims 2 and 4-20 were allowable.  The Examiner also objected to claim 21 as including allowable subject matter but depending from rejection claim 1.  By amendment, Applicant has canceled claims 1 and 21, thereby eliminating all rejected claims and only including allowable claims.  Therefore, the case is in condition for allowance in the Examiner’s position.
Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee.  Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.”

CITED REFERENCE SUMMARIES: Ref CN112856168: Claims:
1. A tripod, comprising:
the angle clamping structure is fixedly arranged on the base body of the tripod;
the base body is provided with a foot rest middle base mechanism for loading photographic equipment;
one end of the rotating piece is rotatably connected to the angle clamping structure, and the other end of the rotating piece is connected with a supporting leg of the tripod;
the angle control piece is arranged on the rotating piece in a sliding manner; the angle control piece is matched and clamped with the angle clamping structure so as to lock the corresponding angle of the rotating piece relative to the angle clamping structure;
the support leg comprises two or more leg sections, each leg section being axially movable relative to one or more of the other leg sections to lengthen or shorten the support leg;
the supporting leg further comprises a tensioning assembly mounted on the second leg section and the third leg section, and the tensioning assembly can be used for position locking and position releasing through tensioning and contraction;
the supporting leg further comprises a control assembly arranged on the first leg section, and the control assembly is used for controlling the expansion assembly to expand or contract;
the supporting leg further comprises a transmission rod, and the control assembly is in transmission connection with the expansion assembly through the transmission rod.
2. A tripod according to claim 1, wherein: the angle clamping structure is provided with a plurality of clamping positions; the angle control piece is provided with a combination part;
the combination part can be abutted against any position clamping part so as to lock the corresponding angle of the rotating part relative to the angle position clamping structure;
the angle control piece is provided with a movable guide groove, the locking screw penetrates through the movable guide groove of the angle control piece and then is in threaded connection with the rotating piece, and a plurality of disc spring gaskets used for abutting against the angle control piece are arranged between the locking screw and the angle control piece.
3. A tripod according to claim 1, wherein: the tight subassembly that expands includes driving seat, extrusion cover piece and fixing base, the fixing base screw thread cup joint in the periphery of driving seat lower extreme, the equidistant distribution of periphery of fixing base has a plurality of tight pieces that expand, and the periphery cover of a plurality of tight pieces that expand is equipped with the elasticity external member, and extrusion cover piece movable sleeve is located the periphery of driving seat, the top of driving seat is provided with presses the platform, press the platform with the top slip butt of extrusion cover piece, the extrusion cover piece is used for extrudeing the tight piece that expands and makes its outside bloated, the outer wall of the tight piece that expands is provided with friction pad.
4. A tripod according to claim 3, wherein: the periphery of the lower edge of the extrusion sleeve block is provided with a plurality of first extrusion inclined planes at equal intervals, and the first extrusion inclined planes correspond to the expansion blocks one to one.
5. A tripod according to claim 3, wherein: the outer edge of the lower end of the transmission seat is provided with a ring table, a plurality of second extrusion inclined planes are arranged on the periphery of the upper edge of the ring table at equal intervals, and the second extrusion inclined planes correspond to the expansion blocks one to one.
6. A tripod according to claim 3, wherein: the upper end and the lower extreme of bloated compact heap inside wall all are provided with the butt inclined plane.
7. A tripod according to claim 3, wherein: the up end of extrusion cover piece is provided with annular groove on, the annular groove internal rotation is provided with a plurality of balls, the lower extreme of pressing the platform is full of and is provided with annular groove down, goes up annular groove and corresponds the setting with annular groove down, a plurality of balls and the sliding butt of lower annular groove.
8. A tripod according to claim 1, wherein: the control assembly comprises a control base, a control shaft body rotatably arranged on the control base, a control bevel gear sleeved on the periphery of the control shaft body and a hand-piece connected with the control shaft body;
the top end of the transmission rod is provided with a transmission bevel gear which is in meshing transmission connection with the control bevel gear;
the swing arm is positioned on the periphery of the control base and provided with a positioning assembly and a first accommodating cavity for accommodating the positioning assembly, the positioning assembly comprises a first spring and a steel ball, two ends of the first spring are respectively connected to the inner wall of the first accommodating cavity and the outer wall of the steel ball, the front end of the steel ball protrudes out of the first accommodating cavity, the steel ball is in sliding butt joint with the outer wall of the control base, and the outer wall of the control base is also provided with a clamping groove in matched clamping connection with the steel ball;
the outer wall of control base still is provided with second holding chamber, second holding chamber is installed and is used for carrying out spacing subassembly to the hand pendulum, spacing subassembly includes second spring and spacing lug, the both ends of second spring are connected respectively in the inner wall in second holding chamber and the one end of spacing lug, and the other end of spacing lug stretches out suddenly the second holding chamber and be used for with the hand pendulum butt carries on spacingly to the hand pendulum.
9. A tripod according to claim 1, wherein: the foot rest middle seat mechanism comprises a locking assembly, a middle seat shaft sleeve, a movable swing seat, a locking block and a connecting rod, wherein the middle seat shaft sleeve is arranged on a seat body, the movable swing seat is movably arranged at the top end of the middle seat shaft sleeve, the movable swing seat is provided with a first through hole, the connecting rod penetrates through the first through hole, the lower end of the connecting rod is connected with the locking assembly, the locking block is connected with the upper end of the connecting rod, and the width of the locking block is greater than that of the first through hole.
10. A tripod according to claim 9, wherein: the locking component comprises a sliding block and a screw rod, wherein third extrusion inclined planes are arranged on two sides of the sliding block, the screw rod is rotatably arranged on the middle seat shaft sleeve and penetrates through the connecting rod, the locking block is connected with the sliding block through the connecting rod, a first pressing block and a second pressing block are respectively in threaded sleeve connection on the screw rod, the first pressing block and the second pressing block are respectively located on two sides of the connecting rod and are in threaded sleeve connection with the sliding block, the first pressing block and the second pressing block are respectively provided with a fourth extrusion inclined plane matched with the third extrusion inclined planes to be abutted against, the screw rod is provided with a real thread section and an inverse thread section, and the first pressing block and the second pressing block are respectively in threaded connection with the real thread section and the inverse thread section.
Ref US20180252354: Claims:
1. A tripod leg (3) arranged to be fixed to a tripod head (2), the tripod leg (3) comprising a plurality of leg sections (4, 5), slidably movable relative to each other, clamping means to releasably prevent said movement and further comprising a lever (13) wherein said lever (13) is arranged on a portion of said leg (3), which lever (13) in use, does not move in relation to an attached tripod head (2); and is operable to actuate or release the clamping means and characterised in that said lever further comprises an aperture (15) to enable operation of the lever by one or more digits of a user's hand.
2. A leg according claim 1, wherein said lever is moveable to a first position wherein said aperture is open to cooperate with one or more digits of a user's hand; and moveable to a second position wherein said aperture is closed.
3. A leg according to either of the preceding claims, wherein said lever is pivotally attached to said leg and thereby facilitating the pivotal movement of said lever between said first and second positions.
4. A leg according to claim 1, wherein said lever further comprises two arms arranged in a substantially “U” shaped configuration.
5. A leg according to claim 4, wherein each said arm further comprises an open end which further comprises an aperture which cooperates with a protrusion extending from said leg.
6. A leg according to either of claims 4 or 5, wherein each said arm further comprises an angle wherein said open end of each said arm extends along a plane which deviates from a portion of said lever wherein said arms join to form a closed end of said lever.
7. A leg according to claim 6, wherein said lever is positioned at said first position, said closed end of said lever extends along a plane substantially perpendicular to said leg.
8. A leg according to either of claims 6 or 7, wherein said lever is positioned at said second position, said closed end of said lever is located parallel to said leg.
9. A leg according to any of the preceding claims, wherein said lever is operably connected to a remote clamping means via a connecting element; whereby said remote clamping means is located between a first portion and a second portion of said leg; positioning of said lever to said first position activates said clamping means and position of said lever to said second position deactivates said clamping means.
10. A leg according to any of the preceding claims wherein a leg angle adjustment means is situated such that it can be operated whilst simultaneously operating the said clamp operating lever.
11. A leg according to any of the preceding claims, wherein said connecting element is substantially located on the same plane as the width of said leg.
12. A leg according to any of the preceding claims, wherein said connecting element is at least partially located within said leg.
13. A leg according to any of the preceding claims, wherein said connecting element further comprises a plurality of connecting elements and characterised in that said connecting elements are arranged on said leg in a telescopic configuration.
14. A leg according to claim 13, wherein a first said connecting element is operably connected to said lever and said remote clamping means, and a second said connecting element is operably connected from said remote clamping means to a second remote clamping means; whereby said second remote clamping means is located between said second portion and a third portion of said leg; positioning of said lever to said first position activates said second clamping means and position of said lever to said second position deactivates said second clamping means.
15. A leg according to any of the preceding claims, wherein said connecting element is a torsion rod device.
16. A leg according to any of the preceding claims, further comprising a supporting element adapted to support said connecting element along a left or right side of the leg, whereby said supporting facilitates the operation of said connecting rod to said first remote clamping means and/or second remote clamping mean.
17. A leg according to any of the preceding claims, further comprising a stop mechanism which restricts the angle to which the leg can swing and hence enables the tripod to be deployed without a spreader element.
18. A leg according to claim 17, said stop mechanism for the leg angle is adjustable, whereby in use, the initial angle of said leg at deployment can be preset.
19. A leg according to either of claims 17 or 18, wherein said stop mechanism for the leg is adjustable, whereby in use, the leg angle can be adjustable.
20. A leg according to any of the claims 17 to 19, wherein the adjustment of said stop mechanism is configured such that the operator can change the stop whilst they are using the clamp operating lever to support the payload and simultaneously adjusting the leg length.
21. A leg according to any of the preceding claims, wherein said stop mechanism means is operated from a button or lever which can be easily reached by one of the operator's digits whilst they are operating the clamp operating lever.
22. A leg according to any of the preceding claims, wherein said stop mechanism means is controlled from said lever, whereby in use, said lever is pressed/arranged beyond its first position to release the stop and letting it spring back to its first position to set the stop.
23. A tripod leg as hereinbefore described in the accompanying text and or Figures.
24. A tripod comprising a plurality of tripod legs according to any of the previous claims.
Ref US20210010637: Claims:
1. A single-hand-lever double-joint-control adjustable hoop type bearing frame, which is characterized in that:
the bearing frame comprises a fixed part, the fixed part comprises a fork frame, fixed supporting rods and a sliding frame, a base is arranged above the fork frame, a middle portion of a plane of the base is a conical molded surface, a side surface is provided with three shaft fixing bases, outer surfaces of the three shaft fixing bases are each in an arc shape, a shaft installing groove is arranged in the arc shape of the shaft fixing base, each of the three shaft installing grooves is internally provided with a fixed connection shaft, two ends of the three fixed connection shafts are both connected with two side lugs at a top end of the fork frame, a center bottom of the base is provided with a bowl-shaped bracket, a center of the bracket is provided with a round hole, the bracket is further provided with uniformly distributed lightening holes, the two fixed supporting rods arranged in parallel are connected with the fork frame, top ends of the two fixed supporting rods are inserted and installed at lower ends of the side lugs of the fork frame, the sliding frame is further installed at bottom ends of the two fixed supporting rods, and a first sliding parts and a second sliding part are further included; the first sliding part is installed on the fixed supporting rod in a sleeving manner, and can be locked or slide relative to the fixed supporting rod, the first sliding part comprises an upper locking mechanism, a lower locking mechanism and a locking control device, and the locking control device controls locking or loosening of the upper locking mechanism on the fixed supporting rod; the upper locking mechanism comprises an upper connection frame, a locking plate, a swing bolt and an eccentric rod, the upper connection frame is provided with a guiding and positioning hole for the fixed supporting rod to pass through, the upper connection frame is installed on the fixed supporting rod in a sleeving manner through the guiding and positioning hole, a locking plate installing groove is formed in the upper connection frame, the locking plate groove communicates with the guiding and positioning hole at a position of a groove edge, a locking plate is installed in the locking plate groove, the locking plate is provided with arc-shaped surfaces to be used for clamping the fixed supporting rod, a side face of the locking plate is connected with one end of the swing bolt, the other end of the swing bolt is installed on the eccentric rod in a sleeving manner, and movement of the eccentric rod is transmitted through the locking control device; the locking control device comprises a pulling handle and a pulling handle core, a core body base, swinging shafts and eccentric boss shafts are arranged on the pulling handle core, the swinging shafts are arranged on two sides of the core body base, a front side of the upper connection frame is provided with a corresponding core body installing groove and swinging shaft through grooves, the swinging shaft is installed in the swinging shaft through groove, the pulling handle core is installed in the core body installing groove, the pulling handle driving the core body base to rotate is installed on a front side of the core body base, the core body base is provided with four screw holes to be connected and locked to the pulling handle through screws, the core body base rotates around a shaft axis of the swinging shaft, the swinging shaft of the pulling handle core is provided with an eccentric rod groove, the eccentric rod is installed in the eccentric rod groove, an axis of the eccentric rod deviates from an axis of the swinging shaft, and eccentric rotation of the eccentric rod enables the swing bolt to do push-pull movement; the locking control device can control locking or loosening of the lower locking mechanism on the second sliding part, the eccentric boss shafts are arranged on two sides of the swinging shaft of the pulling handle core, an axis of the eccentric boss shaft deviates from that of the swinging shaft of the pulling handle core, the eccentric boss shaft is connected with the lower locking mechanism, the eccentric boss shaft is driven by eccentric swinging of the swinging shaft, so that the locking mechanism carries out locking or loosening on the second sliding part, the lower locking mechanism comprises outer side pipes, a connection rod, an upper pulling block, a tightening rod, a tightening wedge block, a locking block and a lower connection frame, an upper end of the outer side pipe is connected with the upper connection frame, a bottom end of the outer side pipe penetrates through the sliding frame to be connected with the lower connection frame, the connection rod is installed in the outer side pipe on one side, an upper end of the connection rod is connected with the swinging eccentric boss shaft in a hinged manner, the connection rod can be driven to achieve up-down displacement due to reciprocating swinging of the eccentric boss shaft, a lower end of the connection rod is connected with the upper pulling block in a hinged manner, the upper pulling block is in threaded connection with an upper end of the tightening rod, a bottom end of the tightening rod penetrates through the sliding frame to be provided with the tightening wedge block, the connection rod can drive the tightening wedge block to move up and down, the lower connection frame is provided with a groove, the tightening wedge block is located in the groove of the lower connection frame, the locking block is placed on one side of the tightening wedge block, relative to the tightening wedge block, the locking block is located at a position, close to a middle of the lower connection frame, in the groove, one surface, making contact with the locking block, of the tightening wedge block is a bevel, one surface, making contact with the tightening wedge block, of the locking block is also a bevel, a height of the groove is equal to that of the locking block, the bevel of the tightening wedge block in the upward moving process can push the locking block to move transversely in the groove, and the locking block moves transversely so as to lock the second sliding part; the second sliding part comprises a guiding and positioning block, a middle pipe and supporting feet, the guiding and positioning block is installed between the two outer side pipes, and has a guiding and positioning effect relative to sliding of the middle pipe, a lower surface of the guiding and positioning block is pr
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