CN209587609U - A kind of adjustment seat - Google Patents

A kind of adjustment seat Download PDF

Info

Publication number
CN209587609U
CN209587609U CN201822125713.7U CN201822125713U CN209587609U CN 209587609 U CN209587609 U CN 209587609U CN 201822125713 U CN201822125713 U CN 201822125713U CN 209587609 U CN209587609 U CN 209587609U
Authority
CN
China
Prior art keywords
adjustment
sliding rail
manual operation
adjustment seat
adjustment portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201822125713.7U
Other languages
Chinese (zh)
Inventor
沈杰
杨应俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silicon electric semiconductor equipment (Shenzhen) Co., Ltd
Original Assignee
SHENZHEN SIDEA SEMICONDUCTOR EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN SIDEA SEMICONDUCTOR EQUIPMENT CO Ltd filed Critical SHENZHEN SIDEA SEMICONDUCTOR EQUIPMENT CO Ltd
Priority to CN201822125713.7U priority Critical patent/CN209587609U/en
Application granted granted Critical
Publication of CN209587609U publication Critical patent/CN209587609U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Seats For Vehicles (AREA)

Abstract

The utility model discloses a kind of adjustment seats.The adjustment seat includes mounting base, is fixed for the adjustment seat position;First adjustment portion is connected to mounting base by the first sliding rail;First regulating mechanism, for adjusting the first adjustment portion relative to mounting base in the position of the first sliding rail;First regulating mechanism includes first manual operation portion;Second adjustment portion is connected to the first adjustment portion by the second sliding rail;Second adjustment structure, for adjusting the second adjustment portion relative to the first adjustment portion along the position of the second sliding rail;Second adjustment structure includes the second manual operation unit;The direction that first sliding rail extends intersects at the direction of the second sliding rail extension;The first manual operation portion and the second manual operation unit are respectively positioned on the same side of the adjustment seat.

Description

A kind of adjustment seat
Technical field
The utility model relates to a kind of adjustment seats.
Background technique
Manual operation units are arranged using three different sides in existing three dimensional regulating seat, due to the manual behaviour of not ipsilateral The portion of work can individually occupy additional space, and need the reserved space for needing to adjust manual operation unit.This structure is unfavorable for visiting The test of needle platform spininess is also unfavorable for realizing the miniaturization of probe adjustment seat.
Utility model content
In order to improve the above problem, probe adjustment seat the space occupied is further decreased;The utility model proposes a kind of tune Save seat.
The technical solution of the utility model are as follows: a kind of adjustment seat includes,
Mounting base is fixed for the adjustment seat position;
First adjustment portion is connected to mounting base by the first sliding rail;
First regulating mechanism, for adjusting the first adjustment portion relative to mounting base in the position of the first sliding rail;Described first Regulating mechanism includes first manual operation portion;
Second adjustment portion is connected to the first adjustment portion by the second sliding rail;
Second adjustment structure, for adjusting the second adjustment portion relative to the first adjustment portion along the position of the second sliding rail;It is described Second adjustment structure includes the second manual operation unit;
The direction that first sliding rail extends intersects at the direction of the second sliding rail extension;The first manual operation portion and Two manual operation units are respectively positioned on the same side of the adjustment seat.
Further, the adjustment seat further includes,
Third adjustment portion is connected to the second adjustment portion by third sliding rail;
Third adjustment structure, for adjusting third adjustment portion relative to the second adjustment portion along the position of third sliding rail;It is described Third adjustment structure includes third manual operation unit;The third manual operation unit, the second manual operation unit and first manual behaviour The portion three of work is respectively positioned on the same side of the adjustment seat.
Further, the third sliding rail extends perpendicularly to the adjustment seat side where third manual operation unit.
Further, the third adjustment structure is adjusting screw rod, and the adjusting screw rod is bolted in third adjustment portion;
Reset spring is connected to third adjustment portion and the second adjustment portion, and adjusting screw rod is made only to be butted on the second adjustment portion.
Further, first regulating mechanism includes,
First spiral ejection pin is bolted in the first adjustment portion;First spiral ejection pin extends perpendicularly to the first sliding rail Extending direction;
First lever block is articulated in the first adjustment portion;
First limited block, is connected to mounting base;
Adjusting the first spiral ejection pin rotates the first lever block, and the first lever block of the rotation acts on the first limit Block, so that the first adjustment portion be made to move relative to mounting base along the first sliding rail;First spiral ejection pin is far from the first lever block One end be first manual operation portion;
First limit spring is connected to mounting base and the first adjustment portion;The first lever block is set only to be butted on the first spiral ejection pin, The first lever block is only butted on the first limited block simultaneously.
Further, the first sliding rail extending direction is parallel to where first manual operation portion and the second manual operation unit The side of adjustment seat.
Further, the second sliding rail extending direction is parallel to where first manual operation portion and the second manual operation unit The side of adjustment seat.
Further, the direction that the direction that first sliding rail extends extends perpendicular to the second sliding rail.
Further, the side in first sliding rail extends direction, the direction that the second sliding rail extends and the extension of third sliding rail It is mutually perpendicular to two-by-two to three.
The utility model has the beneficial effects that by the way that by multiple manual operation units of probe adjustment seat, (including first manual is grasped Make portion and the second manual operation unit) the same side of adjusting is set, reduce first manual operation portion and the second manual operation section The summation for not needing to take up space, to reduce adjustment seat entity under the premise of meeting adjustment seat requirement and occupy and need Meet operation and requires the space occupied.
Detailed description of the invention
Fig. 1 is adjustment seat schematic diagram;
Fig. 2 is probe mounting structure explosive view;
Fig. 3 is adjusting rod, probe portion and installation portion connecting structure cross-sectional view;
Fig. 4 is probe portion structural schematic diagram;
Fig. 5 is mounting portion schematic diagram.
Specific embodiment
For convenient for those skilled in the art understand that the technical solution of the utility model, below by the technical side of the utility model Case is described in further detail in conjunction with specific embodiments.
As shown in Figure 1, a kind of adjustment seat 100, for realizing the adjusting of probe spatial position, including,
Mounting base 20 is fixed by the mounting base 20 with probe station, and 100 position of adjustment seat is fixed in realization;
First adjustment portion 30 is connected to mounting base 20 by the first sliding rail 31;To which first adjustment portion 30 can only edge First sliding rail 31 is moved relative to the mounting base 20, to realize the restriction to the first adjustment portion 30 movement position and direction;
First regulating mechanism, for adjusting the first adjustment portion 30 relative to mounting base 20 in the position of the first sliding rail 31;Institute Stating the first regulating mechanism includes first manual operation portion, and it is empty that the setting of the first operation portion influences the whole occupancy of the adjustment seat 100 Between, and in order to realize regulatory function, need to consider that the hand of operator needs the space occupied;Due to there is first manual operation Portion, therefore the setting of the first regulating mechanism needs to consider to adjust 30 operator's hand of the first adjustment portion and needs the space occupied;
Second adjustment portion 40 is connected to the first adjustment portion 30 by the second sliding rail 41, so that the second adjustment portion 40 can only edge Second sliding rail 41 is moved relative to the first adjustment portion 30;
Second adjustment structure, for adjusting the second adjustment portion 40 relative to the first adjustment portion 30 along the position of the second sliding rail 41 It sets;Second adjustment structure includes the second manual operation unit;Second adjustment structure is using similar with the first regulating mechanism Structure, this will not be detailed here;
The direction that first sliding rail 31 extends intersects at the direction of the second sliding rail 41 extension;The first manual operation portion The same side of the adjustment seat 100 is respectively positioned on the second manual operation unit, the first manual operation portion and second are grasped manually Make the same side that portion's the space occupied is located at adjustment seat 100, reduce other sides because first manual operation portion and/or second manually Operation portion the space occupied, and manual operation need the space occupied;To realize that adjustment seat 100 minimizes, meet probe Platform needs the demand of multiple probe tests;Probe is connected to the second adjustment portion 40, to adjust the first regulating mechanism and/or the Two adjustment structures can be realized adjusting of the probe relative to 20 position of mounting base, meet the requirement of probe.
As shown in Figure 1, the adjustment seat 100 further includes,
Third adjustment portion 50 is connected to the second adjustment portion 40 by third sliding rail 51;
Third adjustment structure, for adjusting third adjustment portion 50 relative to the second adjustment portion 40 along the position of third sliding rail 51 It sets;The third adjustment structure includes third manual operation unit;The third manual operation unit, the second manual operation unit and first Manual operation unit three is respectively positioned on the same side of the adjustment seat 100;The third sliding rail 51 extends perpendicularly to third 100 side of adjustment seat where manual operation unit, is connected to third adjustment portion 50 for probe, real by adjusting third adjustment structure Existing third adjustment portion 50 realizes the second adjustment portion relative to the movement of the second adjustment portion 40 and/or by adjusting the second adjustment structure 40 realize the first adjustment portion 30 relative to installation relative to the position of the first adjustment portion 30 and/or by adjusting the first regulating mechanism The position of seat 20, the final adjusting for realizing probe relative to 20 position of mounting base;It is sliding by changing the first sliding rail 31 and/or second The purpose adjusted to probe according to predeterminated position is realized in the direction of rail 41 and/or third sliding rail 51.
As shown in Figure 1, the third adjustment structure is adjusting screw rod 52, the adjusting screw rod 52 is bolted in third adjustment portion 50;
Reset spring 53 is connected to third adjustment portion 50 and the second adjustment portion 40, and adjusting screw rod 52 is made only to be butted on the second tune Section portion 40;Under the effect of reset spring 53, adjusting screw rod 52, which stops, is butted on the second adjustment portion 40 to the feeding tune of adjusting screw rod 52 Third adjustment portion 50 is saved relative to the second adjustment portion 40 along the position of third sliding rail 51, position Adjustment precision is high, adjusting screw rod 52 Using screw thread.
As shown in Figure 1, first regulating mechanism includes,
First spiral ejection pin 32 is bolted in the first adjustment portion 30;First spiral ejection pin 32 extends perpendicularly to One sliding rail, 31 extending direction;
First lever block 33 is similar to the component stress side for making force direction using lever principle (torque) and needing to adjust To at non-parallel state, it is articulated in the first adjustment portion 30;
First limited block 34, is connected to mounting base 20;
Adjusting the first spiral ejection pin 32 rotates the first lever block 33, and the first lever block 33 of the rotation acts on first Limited block 34, so that the first adjustment portion 30 be made to move relative to mounting base 20 along the first sliding rail 31;First spiral ejection pin 32 One end far from the first lever block 33 is first manual operation portion;Finally make 32 direction of feed of the first spiral ejection pin of force and the One sliding rail 31 limits direction at an angle, realizes in the case where satisfaction adjusts requirement to the first adjustment portion 30, first manual operation portion It is arranged to the preset face of adjustment seat 100, to reduce the 100 entity occupied space of adjustment seat, and needs to manually adjust The adjusting space that one manual operation unit occupies.
First limit spring is connected to mounting base 20 and the first adjustment portion 30;The first lever block 33 is set only to be butted on the first spiral shell Mandril 32 is revolved, while the first lever block 33 is only butted on the first limited block 34;Make 30 adjusting position of the first adjustment portion and the first spiral 32 regulated quantity of mandril is related, realizes reliable and stable to the adjusting of the first adjustment portion 30.
As shown in Figure 1,31 extending direction of the first sliding rail is parallel to first manual operation portion and the second manual operation unit The side of place adjustment seat 100;Second sliding rail, 41 extending direction is parallel to first manual operation portion and the second manual operation The side of adjustment seat 100 where portion;To realize that probe is parallel at the same time in the plane of the first sliding rail 31 and the second sliding rail 41 Position is adjusted.
As shown in Figure 1, the direction that the direction that first sliding rail 31 extends extends perpendicular to the second sliding rail 41;Position is adjusted More precise and high efficiency;If 41 out of plumb of the first sliding rail 31 and the second sliding rail, along the partite transport of the amount of feeding generation of the first sliding rail 31 It moves along the second sliding rail 41, so that constant quick and precisely realize the adjusting to probe location with operator.
As shown in Figure 1, direction and third sliding rail 51 that the direction of the extension of the first sliding rail 31, the second sliding rail 41 extend are prolonged The direction three stretched is mutually perpendicular to two-by-two;It realizes and probe is adjusted in the position of three-dimensional space, meanwhile, along the first sliding rail 31/ the The position of two sliding rails, 41/ third sliding rail 51 adjusts the adjusting that will not influence along other positions, consequently facilitating operator judges to need By probe debugging, to predetermined position, how this is adjusted.
As shown in Figure 1, since adjustment seat 100 using downside (passing through mounting base 20) is fixed on equipment, it is multiple in equipment Adjustment seat 100 laterally arranges, therefore under the premise of arranging that 100 space of adjustment seat is certain, by first manual operation portion, second-hand Dynamic operation portion and the setting of third manual operation unit are in upside, to reduce because of first manual operation portion/second manual operation unit/the The setting of three manual operation units occupies more spaces in side, influences the quantity of installation and adjustment seat 100;And it is manual convenient for operator Adjust first manual operation portion/second manual operation unit/third manual operation unit.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the adjustment seat 100 further includes probe mounting structure 60, the probe Mounting structure 60 includes,
Adjusting rod 61, for adjusting the height of probe, for meeting the operating position and needle exchange position of probe, when probe When operating position is not easy to needle exchange, by adjusting the band needle exchange position of probe, thus the probe for meeting needle exchange demand, and newly changing It is small to be returned to operating position regulated quantity;Relative to using the reduction probe regulated quantity of third adjustment portion 50 is adjusted, needle exchange efficiency is promoted; The adjusting rod 61 is disposed with only support segment 611, limit section 612, the first thread segment 613 and the second thread segment 614, and described the One thread segment 613 and the second thread segment 614 are the external screw thread of same model;First thread segment 613 and the second thread segment 614 Between be connected with displaced segments 615;The first card slot 616 is provided between the limit section 612 and the first thread segment 613;
Probe portion 62, for installing probe;The probe portion 62 is provided with V-type sliding rail 621 and abutting portion 622;The spy Needle portion 62 is provided with connecting hole 623, and the opening direction of the connecting hole 623 is parallel to V-type sliding rail 621;
Mounting portion 63 is provided with V-type sliding slot 631, first and positions internal screw thread 632 and only support step 633;First positioning Internal screw thread 632 can be spirally connected with 613/ third thread segment 614 of the second thread segment;
First snap ring 64;
The adjusting rod 61 is passed through into the connecting hole 623, the adjusting rod 61 can rotate fortune in connecting hole 623 Dynamic, first snap ring 64 is connected to the first card slot 616, and abutting portion 622 is located at only between support segment 611 and the first snap ring 64;V-type Sliding rail 621 is connect with V-type sliding slot 631, the 613/ third thread segment 614 of the second thread segment and the first positioning 632 spiral shell of internal screw thread It connects;When the first thread segment 613 and the first positioning internal screw thread 632 are spirally connected, and abutting portion 622 is only butted on only to step 633, at this time Probe is in operating position, and the probe newly changed is only needed to can be achieved with by fine tuning to harmonize station;First snap ring 64 at this time The positions and dimensions of setting need to adjust according to actual needs, prevent the first snap ring 64 to be only butted on and only cause probe to step 633 Portion 62 is not fixed in working position position and influences to use;When the second thread segment 614 and the first positioning internal screw thread 632 are spirally connected, by Can only realize movement by rotation in adjusting rod 61, so when probe portion 62 can only be limited in only support segment 611 and the first snap ring 64 It is moved between fixed position, since 62 moving displacement of probe portion is small, consequently facilitating replacement probe.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, described 622 one end of abutting portion is only butted on only support segment 611, abutting portion 622 One end elasticity far from only support segment 611 is only butted on the first snap ring 64;Probe portion 62, which meets operating position, can push against in only support segment 611 and only support step 633;When probe portion 62 is in needle exchange position, since 622 elasticity of abutting portion is only butted on only 611 He of support segment Between first snap ring 64, it is more stable that position is only supported relative to no elasticity, while abutting portion 622 is only supported relative to no elasticity Farther away from operating position, replacement probe is easily facilitated.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the probe mounting structure 60 further includes promoting spring 65, described to mention It rises 65 one end of spring and is only butted on the first positioning internal screw thread 632, it is described to promote the one end of spring 65 far from the first positioning internal screw thread 632 Only it is butted on abutting portion 622;The adjusting rod 61 passes through the promotion spring 65;When the first thread segment 613 positions interior spiral shell from first After line 632 screws out, in the case where promoting spring 65 and acting on, second thread segment 614 is only butted on the first positioning internal screw thread 632, passes through Rotation adjusting lever 61 can be achieved with the second thread segment 614 and be spirally connected with the first positioning internal screw thread 632, promotes probe and replaces efficiency, from And 61 position of adjusting rod is stablized during replacing probe.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the adjusting rod 61 is close to the second thread segment (614) one end and second The second card slot 617 is provided between thread segment 614;The probe mounting structure 60 further includes the second snap ring 66, second card Ring 66 is connect with the second card slot (617);Prevent the second thread segment 614 from screwing out the first positioning along close to 613 side of the first thread segment Internal screw thread 632, causing adjusting rod 61 to be detached from the first positioning internal screw thread 632 influences the use of probe mounting structure 60.
It is the preferred embodiment of the utility model above, is not used in the restriction protection scope of the utility model.It should approve, Those skilled in the art made non-creative deformation and change after understanding technical solutions of the utility model, should also belong to The protection of the utility model and scope of disclosure.

Claims (9)

1. a kind of adjustment seat (100), it is characterised in that: the adjustment seat (100) includes,
Mounting base (20) is fixed for the adjustment seat (100) position;
First adjustment portion (30) is connected to mounting base (20) by the first sliding rail (31);
First regulating mechanism, for adjust the first adjustment portion (30) relative to mounting base (20) the first sliding rail (31) position; First regulating mechanism includes first manual operation portion;
Second adjustment portion (40) is connected to the first adjustment portion (30) by the second sliding rail (41);
Second adjustment structure, for adjusting position of the second adjustment portion (40) relative to the first adjustment portion (30) along the second sliding rail (41) It sets;Second adjustment structure includes the second manual operation unit;
The direction that first sliding rail (31) extends intersects at the direction of the second sliding rail (41) extension;The first manual operation portion The same side of the adjustment seat (100) is respectively positioned on the second manual operation unit.
2. adjustment seat (100) according to claim 1, it is characterised in that: the adjustment seat (100) further includes,
Third adjustment portion (50) is connected to the second adjustment portion (40) by third sliding rail (51);
Third adjustment structure, for adjusting position of the third adjustment portion (50) relative to the second adjustment portion (40) along third sliding rail (51) It sets;The third adjustment structure includes third manual operation unit;The third manual operation unit, the second manual operation unit and first Manual operation unit three is respectively positioned on the same side of the adjustment seat (100).
3. adjustment seat (100) according to claim 2, it is characterised in that: third sliding rail (51) extending direction is vertical In adjustment seat (100) side where third manual operation unit.
4. adjustment seat (100) according to claim 3, it is characterised in that: the third adjustment structure is adjusting screw rod (52), the adjusting screw rod (52) is bolted in third adjustment portion (50);
Reset spring (53) is connected to third adjustment portion (50) and the second adjustment portion (40), and adjusting screw rod (52) is made only to be butted on the Two adjustment portions (40).
5. adjustment seat (100) according to claim 1, it is characterised in that: first regulating mechanism includes,
First spiral ejection pin (32) is bolted in the first adjustment portion (30);First spiral ejection pin (32) extends perpendicularly to First sliding rail (31) extending direction;
First lever block (33) is articulated in the first adjustment portion (30);
First limited block (34) is connected to mounting base (20);
Adjusting the first spiral ejection pin (32) rotates the first lever block (33), and the first lever block (33) of the rotation acts on the One limited block (34), so that the first adjustment portion (30) be made to move relative to mounting base (20) along the first sliding rail (31);Described first The one end of spiral ejection pin (32) far from the first lever block (33) is first manual operation portion;
First limit spring is connected to mounting base (20) and the first adjustment portion (30);The first lever block (33) are made only to be butted on first Spiral ejection pin (32), while the first lever block (33) is only butted on the first limited block (34).
6. adjustment seat (100) according to claim 1, it is characterised in that: the first sliding rail (31) extending direction is parallel The side of adjustment seat (100) where first manual operation portion and the second manual operation unit.
7. adjustment seat (100) according to claim 6, it is characterised in that: the second sliding rail (41) extending direction is parallel The side of adjustment seat (100) where first manual operation portion and the second manual operation unit.
8. adjustment seat (100) according to claim 1, it is characterised in that: hang down in the direction that first sliding rail (31) extends The direction directly extended in the second sliding rail (41).
9. adjustment seat (100) according to claim 2, it is characterised in that: direction that first sliding rail (31) extends, the The direction three that the direction and third sliding rail (51) that two sliding rails (41) extend extend is mutually perpendicular to two-by-two.
CN201822125713.7U 2018-12-18 2018-12-18 A kind of adjustment seat Active CN209587609U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822125713.7U CN209587609U (en) 2018-12-18 2018-12-18 A kind of adjustment seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822125713.7U CN209587609U (en) 2018-12-18 2018-12-18 A kind of adjustment seat

Publications (1)

Publication Number Publication Date
CN209587609U true CN209587609U (en) 2019-11-05

Family

ID=68377711

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822125713.7U Active CN209587609U (en) 2018-12-18 2018-12-18 A kind of adjustment seat

Country Status (1)

Country Link
CN (1) CN209587609U (en)

Similar Documents

Publication Publication Date Title
CN205480007U (en) LED display screen box altitude mixture control base
CN209587609U (en) A kind of adjustment seat
CN209690354U (en) A kind of probe mounting structure
CN204195210U (en) Damper spring hold down gag
US6405895B1 (en) Arranging and supplying apparatus
CN207256076U (en) Localization tool
CN206999642U (en) A kind of ray machine calibration adjustment mechanism of 3D printer
CN208431533U (en) A kind of angle adjustment device and the support frame with it
US7997918B2 (en) Actuation device having combined mechanisms to match a desired connector plugging curve and method for actuating a power supply therewith
CN103182689A (en) Flexible adjusting mechanism
CN104181665A (en) Manually-operated fine tuning mechanism used for object lens adjustment
CN107971969B (en) For installing the tooling of camera
CN208729613U (en) The secondary positioning tool of aluminium seat
CN204383759U (en) The Cloud Terrace and Unmanned Aircraft Systems (UAS)
CN208507346U (en) Assembly device and its pin for varistor install equipment
CN210025007U (en) Flat XY theta manual fine tuning platform and display panel test fixture
CN207798405U (en) Oiling wicket fatigue experimental device
CN209276780U (en) Lower head section mechanism and the sewing machine with it
CN100377955C (en) Panel conveying apparatus for a press line
CN215440882U (en) Lower ring triangular device for circular weft knitting machine
CN207665302U (en) A kind of four axis tooling device used for locating
CN219765879U (en) Double-valve regulating mechanism
CN208707495U (en) Winding fixture in a kind of height-adjustable inner stator of stator
CN201752848U (en) Rotary screw distribution mechanism
CN209043949U (en) A kind of adjusting needle stand

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 518172 Longgang District, Shenzhen City, Guangdong Province

Patentee after: Silicon electric semiconductor equipment (Shenzhen) Co., Ltd

Address before: 518172 Longgang District, Shenzhen City, Guangdong Province

Patentee before: SHENZHEN SIDEA SEMICONDUCTOR EQUIPMENT Co.,Ltd.

CP01 Change in the name or title of a patent holder