US2216208A - Adjusting device for punchretaining blocks - Google Patents

Adjusting device for punchretaining blocks Download PDF

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Publication number
US2216208A
US2216208A US288865A US28886539A US2216208A US 2216208 A US2216208 A US 2216208A US 288865 A US288865 A US 288865A US 28886539 A US28886539 A US 28886539A US 2216208 A US2216208 A US 2216208A
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Prior art keywords
block
punch
sleeves
punchretaining
adjusting device
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Expired - Lifetime
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US288865A
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Joseph H M Michon
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00—Joints and connections
    • Y10S403/08—Radially acting cam or eccentric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9437—Shear-type female tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable

Definitions

  • This invention relates to sheet metal trimming and punching machines and more particularly to means for adjusting the punch-retaining block with respect to the die shoes.
  • the object of the invention is to provide novel means whereby the punch-retaining block may be adjusted laterally on the die shoe to permit alinement of the punch elements with the work without the necessity of redoweling or forming extra openings in either the retaining block or die shoe, said means also serving to securely hold the punch-carrying block in different set positions of adjustment.
  • a further object of the invention is to provide an adjusting device including inner and outer eccentric sleeves adapted to fit within anopening in the punch-retaining block and provided with interengaging tapered portions, the inner sleeve being adapted to receive a clamping screw threaded in the die shoe so that after lateral adjustment of theretaining block has been effected, rotation of the screw will securely hold said block in a set position.
  • a further object is to provide the retaining block with a punch-receiving opening at one end thereof so as to permit adjustment of the punch to either an edge or corner of the work, the adjusting means being so constructed as to permit the use thereof on gage plates and the like.
  • a still further object of the invention is generally to improve thisclass of devices so as to in crease their utility, durability and efiiciency.
  • Figure l is a top plan view of a punch-retaining block provided with the improved adjusting mechanism
  • Figure 2 is a vertical sectional View taken on the line 2-2 of Figure 1,
  • Figure 3 is a top plan view of a punch block especially designed for use when punching or piercing an edge or corner of the work
  • Figure 4 is a transverse sectional view taken on the line 4-4 of Figure 3, and
  • Figure 5 is a top plan view showing the adjusting device applied to a gage plate.
  • the improved adjusting means forming the subject-matter of the present invention may be used in connection with any style or type of metal working machine, and in Figure 1 there is illustrated a portion of a conventional machine in which 5 designates the die shoe and 6 the retaining block having an opening 1 formed there- (omen-11c) in for the reception of a piercing punch.
  • the block 6 shown in Figure 1 of the drawing is substantially rectangular in shape and formed in the diagonal corners of said block are openings 8, the lower ends of which are reduced at 9 to form ta- 5' pered shoulders it.
  • telescopic inner, and outer eccentric sleeves I l and I2 each having its lower end reduced to form inner and outer tapered shoulders E3, the outer shoulders it of the outer sleeve it being adapted 10 to engage the tapered shoulder iii in the block 6 and the outer shoulder is of the inner sleeve ll being adapted to bear against the inner tapered shoulder of the outer sleeve, as best shown in Figure 2 or" the drawing.
  • the upper ends of the 15 sleeves H and I? are formed with angular faces I l so as to permit said sleeves to be engaged with a wrench or other suitable tool for the purpose of rotating or partially rotating the eccentric sleeves to eiiect lateral adjustment of the punchretaining block 6.
  • the upper or open end of the inner eccentric sleeve it is provided with a recess l5 defining a stop shoulder lt'and seated in said recess is the head it of a clamping screw or dowel, indicated at it.
  • the lower end of the clamping g5 screw i8 is threaded at E9 in the die shoe 5 while the upper end of said screw is provided with an angular socket 2% adapted to receive a correspondingly shaped wrench for the purpose of r0- tating the screw l 8 to clamp the parts in adjusted position.
  • the inner and outer sleeves are assembled in telescopic relation and then introduced within the openings 8 in the retaining block 6, after which the adjusting screw or dowel I8 is inserted within the bore of the inner sleeve II and the lower end thereof threaded into the opening H in the die shoe.
  • the retaining block 6 laterally to cause the punch elements to aline with each other or with 40 the work, it is merely necessary to grasp the angular heads of the eccentric sleeves and turn said sleeves either to the right or left as the case may be, and inasmuch as the lower end of the adjusting screw or dowel is threaded in the die shoe, the retaining block t will be moved laterally on the die shoe to the desired position of adjustment.
  • the threaded dowel or screw After the retaining block has been adjusted to the desired position on the die shoe, the threaded dowel or screw it is tightened which causes the inclined or tapered shoulders tointerengage and thus firmly secure the punch-retaining block in a set position of adjustment. Any desired position of adjustment of the retaining block may be effected at any time by merely loosening the adjusting screw l8 and after rotating the eccentric sleeves to the desired position again tightening the screw which will hold the parts securely in adjusted position.
  • FIG. 3 of the drawing there is illustrated a modified form of punch-retaining block in which the forward end of the adjustable block 1 is tapered and provided with a punch-receiving opening 2
  • said upper ends instead of providing the upper ends of the eccentric sleeves with angular wrench-engaging faces, said upper ends are formed with notches or indentations 22 for engagement with a pointed instrument for the purpose of rotating the sleeves to eifect adjustment of the block 1.
  • These indentations or notches 22 may be graduated to a fixed scale so that the operator will know the exact extent of turning movement to be imparted to the adjusting sleeves.
  • the adjusting device may also be used with good results for holding a gage plate in a set position of adjustment, and in Figure of the drawing, there is illustrated a gage plate 23 adjustably mounted on a die shoe 24 and having one end thereof cut away to form a notch or recess 25 adapted to receive a corner of a metal plate or other work and prevent accidental displacement thereof when punching, trimming or otherwise operating on said work.
  • the device is exceedingly simple in construction and the use thereof obviates the necessity of redoweling or forming extra openings in either the punch-retaining block or die shoe when adjusting said block.
  • An adjusting device comprising inner and outer eccentric sleeves adapted to fit within an opening in a movable member to be rotated therein and provided with'interengaging offset portions, and a clamping screw loosely mounted for rotation within the inner sleeve and having its lower end threaded for engagement with a fixed support said screw when rotated clamping the offset portions of the sleeves and holding said sleeves in adjusted position.

Description

J. H. M. MICHON ADJUSTING DEVICE FOR PUNCH-RETAINING BLOCKS Filed Aug. 7, 1939 Micfion.
Patented Oct. 1, 1940 UNITED STATES ADJUSTING DEVICE FOR PUNCH- RETAINING BLOCKS Joseph H. Michon, Tflledi), Ohio Application August 7, 1939, Serial No. 288,865,
5 Claims.
This invention relates to sheet metal trimming and punching machines and more particularly to means for adjusting the punch-retaining block with respect to the die shoes.
The object of the invention is to provide novel means whereby the punch-retaining block may be adjusted laterally on the die shoe to permit alinement of the punch elements with the work without the necessity of redoweling or forming extra openings in either the retaining block or die shoe, said means also serving to securely hold the punch-carrying block in different set positions of adjustment.
A further object of the invention is to provide an adjusting device including inner and outer eccentric sleeves adapted to fit within anopening in the punch-retaining block and provided with interengaging tapered portions, the inner sleeve being adapted to receive a clamping screw threaded in the die shoe so that after lateral adjustment of theretaining block has been effected, rotation of the screw will securely hold said block in a set position.
A further object is to provide the retaining block with a punch-receiving opening at one end thereof so as to permit adjustment of the punch to either an edge or corner of the work, the adjusting means being so constructed as to permit the use thereof on gage plates and the like.
A still further object of the invention is generally to improve thisclass of devices so as to in crease their utility, durability and efiiciency.
In the accompanying drawing forming a part of this specification and in which similar numerals of reference indicate corresponding parts in all the figures of the drawing:
Figure l is a top plan view of a punch-retaining block provided with the improved adjusting mechanism,
Figure 2 is a vertical sectional View taken on the line 2-2 of Figure 1,
Figure 3 is a top plan view of a punch block especially designed for use when punching or piercing an edge or corner of the work,
Figure 4 is a transverse sectional view taken on the line 4-4 of Figure 3, and
Figure 5 is a top plan view showing the adjusting device applied to a gage plate.
The improved adjusting means forming the subject-matter of the present invention may be used in connection with any style or type of metal working machine, and in Figure 1 there is illustrated a portion of a conventional machine in which 5 designates the die shoe and 6 the retaining block having an opening 1 formed there- (omen-11c) in for the reception of a piercing punch. The block 6 shown in Figure 1 of the drawing is substantially rectangular in shape and formed in the diagonal corners of said block are openings 8, the lower ends of which are reduced at 9 to form ta- 5' pered shoulders it. Fitted within the openings 8 are telescopic inner, and outer eccentric sleeves I l and I2 each having its lower end reduced to form inner and outer tapered shoulders E3, the outer shoulders it of the outer sleeve it being adapted 10 to engage the tapered shoulder iii in the block 6 and the outer shoulder is of the inner sleeve ll being adapted to bear against the inner tapered shoulder of the outer sleeve, as best shown in Figure 2 or" the drawing. The upper ends of the 15 sleeves H and I? are formed with angular faces I l so as to permit said sleeves to be engaged with a wrench or other suitable tool for the purpose of rotating or partially rotating the eccentric sleeves to eiiect lateral adjustment of the punchretaining block 6. The upper or open end of the inner eccentric sleeve it is provided with a recess l5 defining a stop shoulder lt'and seated in said recess is the head it of a clamping screw or dowel, indicated at it. The lower end of the clamping g5 screw i8 is threaded at E9 in the die shoe 5 while the upper end of said screw is provided with an angular socket 2% adapted to receive a correspondingly shaped wrench for the purpose of r0- tating the screw l 8 to clamp the parts in adjusted position.
In operation, the inner and outer sleeves are assembled in telescopic relation and then introduced within the openings 8 in the retaining block 6, after which the adjusting screw or dowel I8 is inserted within the bore of the inner sleeve II and the lower end thereof threaded into the opening H in the die shoe. If it is desired to adjust the retaining block 6 laterally to cause the punch elements to aline with each other or with 40 the work, it is merely necessary to grasp the angular heads of the eccentric sleeves and turn said sleeves either to the right or left as the case may be, and inasmuch as the lower end of the adjusting screw or dowel is threaded in the die shoe, the retaining block t will be moved laterally on the die shoe to the desired position of adjustment. After the retaining block has been adjusted to the desired position on the die shoe, the threaded dowel or screw it is tightened which causes the inclined or tapered shoulders tointerengage and thus firmly secure the punch-retaining block in a set position of adjustment. Any desired position of adjustment of the retaining block may be effected at any time by merely loosening the adjusting screw l8 and after rotating the eccentric sleeves to the desired position again tightening the screw which will hold the parts securely in adjusted position.
In Figure 3 of the drawing, there is illustrated a modified form of punch-retaining block in which the forward end of the adjustable block 1 is tapered and provided with a punch-receiving opening 2|, this form of the device being particularly adapted to permit adjustment of the block and punch carried thereby to an edge or corner of the work being operated upon. In this embodiment of the invention instead of providing the upper ends of the eccentric sleeves with angular wrench-engaging faces, said upper ends are formed with notches or indentations 22 for engagement with a pointed instrument for the purpose of rotating the sleeves to eifect adjustment of the block 1. These indentations or notches 22 may be graduated to a fixed scale so that the operator will know the exact extent of turning movement to be imparted to the adjusting sleeves. The adjusting device may also be used with good results for holding a gage plate in a set position of adjustment, and in Figure of the drawing, there is illustrated a gage plate 23 adjustably mounted on a die shoe 24 and having one end thereof cut away to form a notch or recess 25 adapted to receive a corner of a metal plate or other work and prevent accidental displacement thereof when punching, trimming or otherwise operating on said work. The device is exceedingly simple in construction and the use thereof obviates the necessity of redoweling or forming extra openings in either the punch-retaining block or die shoe when adjusting said block.
While the device is particularly adapted for imparting lateral adjustment to a punch-retaining block, it will, of course, be understood that said device may be used wherever the same may be found necessary or desirable without departing from the spirit of the invention.
Having thus described the invention, what is claimed as new is:
1. The combination with a support, of a punchretaining block slidably mounted thereon and provided with an opening, inner and outer eccentric sleeves mounted for rotation within said opening and each provided with a reduced extension defining a tapered shoulder, the inner sleeve being provided with a smooth bore the upper end of which is enlarged to form a seating recess, and a dowel pin threaded in the support and having a smooth portion extending within the bore of the inner sleeve and provided with an enlarged head seated in said recess and formed with a terminal wrench-engaging socket.
2. The combination with a support, of a punchretaining block slidably mounted for lateral movement thereon and provided with an opening, inner and outer eccentric sleeves rotatably mounted within the opening and each provided with an exterior angular wrench-engaging surface, the inner sleeve being provided with a smooth bore the upper end of which is enlarged to form a recess defining a stop shoulder, and a clamping screw threaded in the support and having a smooth portion fitted within the bore of the inner sleeve and terminating in an enlarged head adapted to bear against said stop shoulder.
3. The combination with a support, of a punchretaining block slidably mounted for lateral movement thereon and provided with an opening having its lower portion constricted to form a tapered shoulder, inner and outer eccentric sleeves mounted for rotation within said opening, the inner sleeve being provided with a smooth bore and both sleeves being provided with interengaging tapered portions, the outer sleeve being provided with an inclined shoulder adapted to bear against the inclined shoulder of said opening, and a clamping screw having a smooth portion seated within the bore of the inner sleeve and having its lower end threaded in the support.
4. The combination with a support, of a punchretaining block slidably mounted for lateral movement thereon and having one end thereof tapered and provided with an opening for the reception of a piercing punch, there being auxiliary diagonally disposed openings formed in said block at the rear of the punch receiving opening, inner and outer eccentric sleeves mounted for rotation within the auxiliary openings and each provided with a reduced extension defining a tapered portion, the inner sleeves being provided with smooth central bores and a clamping screw seated within the bore of each inner sleeve and having its lower end threaded in the support and its upper end provided with a tool-receiving socket.
5. An adjusting device comprising inner and outer eccentric sleeves adapted to fit within an opening in a movable member to be rotated therein and provided with'interengaging offset portions, and a clamping screw loosely mounted for rotation within the inner sleeve and having its lower end threaded for engagement with a fixed support said screw when rotated clamping the offset portions of the sleeves and holding said sleeves in adjusted position.
JOSEPH H. M. IVHCHON.
US288865A 1939-08-07 1939-08-07 Adjusting device for punchretaining blocks Expired - Lifetime US2216208A (en)

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740500C (en) * 1941-01-07 1943-10-22 Otto Lesser Adjustable clamping body with sliding block
US2601108A (en) * 1946-03-09 1952-06-17 Gen Binding Corp Gang punching machine
US2808654A (en) * 1955-01-31 1957-10-08 Ace Drill Bushing Co Inc Locating key for aligning a tool, jig, or fixture with the slot of a machine table
US2889396A (en) * 1954-09-20 1959-06-02 Westinghouse Electric Corp Adjustable terminal-bushing mounting
US2890062A (en) * 1955-12-05 1959-06-09 Gen Motors Corp Independent wheel suspension with caster and camber adjustment means
US3046825A (en) * 1959-06-22 1962-07-31 Harris Foundry & Machine Co Filler member for positively attaching and positioning a shear knife
US3122048A (en) * 1962-02-01 1964-02-25 Lowis S Warner Adjustable backing key
US3171518A (en) * 1959-07-17 1965-03-02 Erick W Bergmann Construction for adjusting the relative position of screw connected parts
US3246555A (en) * 1964-09-28 1966-04-19 Rite Size Corrugated Machinery Tool hub
US3357661A (en) * 1965-10-23 1967-12-12 Aakjar Elmer Adjustable positioning device
US3511289A (en) * 1967-12-28 1970-05-12 Brown Int Corp Fastener assembly
US3638983A (en) * 1969-06-02 1972-02-01 Lockheed Aircraft Corp Locking mechanism and actuating means therefor
US3935774A (en) * 1973-06-22 1976-02-03 Masson Scott Thrissell Engineering Limited Mounting devices for a blade of a rotary cutting machine
US4012157A (en) * 1976-03-01 1977-03-15 Kraftwerk Union Aktiengesellschaft Connecting device
US5141357A (en) * 1991-01-09 1992-08-25 Sundstrand Corp. Misalignment compensating fastener insert
EP0802000A1 (en) * 1996-04-11 1997-10-22 Murata Kikai Kabushiki Kaisha Die holder mounting structure
US5730039A (en) * 1994-08-19 1998-03-24 South Eastern Die Company, Inc. Method and apparatus for adjusting the position of a cutting plate
US6050034A (en) * 1995-07-28 2000-04-18 Klaus Krinner Anchoring device for a pole- or post-like object
US6200059B1 (en) * 1997-08-19 2001-03-13 Btm Corporation Tool adjustment system
US20030202839A1 (en) * 2002-04-16 2003-10-30 Ge Yokogawa Medical Systems, Limted Positioner and image diagnostic apparatus
US20050262682A1 (en) * 2004-04-15 2005-12-01 Fatigue Technology, Inc. Method and apparatus employing eccentric bushing
US20060039749A1 (en) * 2004-05-19 2006-02-23 Eric Gawehn Eccentric conical fastening system
US20080029749A1 (en) * 2006-02-01 2008-02-07 Macrae Carey Hollow Fence Post to Pipe Adapter
FR2956049A1 (en) * 2010-02-05 2011-08-12 Peugeot Citroen Automobiles Sa Punching assembly for automatically realizing perforations in body of production line of motor vehicle, has two fixing units fixing insert on tool and bore ring interposed between insert and pin with gauged eccentricity
WO2018113863A1 (en) * 2016-12-19 2018-06-28 Vestas Wind Systems A/S Paired eccentric cam adjuster
US11486425B2 (en) 2016-12-19 2022-11-01 Vestas Wind Systems A/S Paired eccentric cam adjuster
US20220364585A1 (en) * 2021-05-17 2022-11-17 Raytheon Company Eccentric Bushing for Redundant Pinning of Removable Panels

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740500C (en) * 1941-01-07 1943-10-22 Otto Lesser Adjustable clamping body with sliding block
US2601108A (en) * 1946-03-09 1952-06-17 Gen Binding Corp Gang punching machine
US2889396A (en) * 1954-09-20 1959-06-02 Westinghouse Electric Corp Adjustable terminal-bushing mounting
US2808654A (en) * 1955-01-31 1957-10-08 Ace Drill Bushing Co Inc Locating key for aligning a tool, jig, or fixture with the slot of a machine table
US2890062A (en) * 1955-12-05 1959-06-09 Gen Motors Corp Independent wheel suspension with caster and camber adjustment means
US3046825A (en) * 1959-06-22 1962-07-31 Harris Foundry & Machine Co Filler member for positively attaching and positioning a shear knife
US3171518A (en) * 1959-07-17 1965-03-02 Erick W Bergmann Construction for adjusting the relative position of screw connected parts
US3122048A (en) * 1962-02-01 1964-02-25 Lowis S Warner Adjustable backing key
US3246555A (en) * 1964-09-28 1966-04-19 Rite Size Corrugated Machinery Tool hub
US3357661A (en) * 1965-10-23 1967-12-12 Aakjar Elmer Adjustable positioning device
US3511289A (en) * 1967-12-28 1970-05-12 Brown Int Corp Fastener assembly
US3638983A (en) * 1969-06-02 1972-02-01 Lockheed Aircraft Corp Locking mechanism and actuating means therefor
US3935774A (en) * 1973-06-22 1976-02-03 Masson Scott Thrissell Engineering Limited Mounting devices for a blade of a rotary cutting machine
US4012157A (en) * 1976-03-01 1977-03-15 Kraftwerk Union Aktiengesellschaft Connecting device
US5141357A (en) * 1991-01-09 1992-08-25 Sundstrand Corp. Misalignment compensating fastener insert
US5730039A (en) * 1994-08-19 1998-03-24 South Eastern Die Company, Inc. Method and apparatus for adjusting the position of a cutting plate
US6050034A (en) * 1995-07-28 2000-04-18 Klaus Krinner Anchoring device for a pole- or post-like object
EP0802000A1 (en) * 1996-04-11 1997-10-22 Murata Kikai Kabushiki Kaisha Die holder mounting structure
US6200059B1 (en) * 1997-08-19 2001-03-13 Btm Corporation Tool adjustment system
US20030202839A1 (en) * 2002-04-16 2003-10-30 Ge Yokogawa Medical Systems, Limted Positioner and image diagnostic apparatus
US6848853B2 (en) * 2002-04-16 2005-02-01 Ge Medical Systems Global Technology Company, Llc Positioner and image diagnostic apparatus
US20050262682A1 (en) * 2004-04-15 2005-12-01 Fatigue Technology, Inc. Method and apparatus employing eccentric bushing
US7406777B2 (en) * 2004-04-15 2008-08-05 Fatigue Technology, Inc. Method and apparatus employing eccentric bushing
US20060039749A1 (en) * 2004-05-19 2006-02-23 Eric Gawehn Eccentric conical fastening system
US7455471B2 (en) * 2004-05-19 2008-11-25 Eric M. Gawehn Eccentric conical fastening system
US20080029749A1 (en) * 2006-02-01 2008-02-07 Macrae Carey Hollow Fence Post to Pipe Adapter
FR2956049A1 (en) * 2010-02-05 2011-08-12 Peugeot Citroen Automobiles Sa Punching assembly for automatically realizing perforations in body of production line of motor vehicle, has two fixing units fixing insert on tool and bore ring interposed between insert and pin with gauged eccentricity
WO2018113863A1 (en) * 2016-12-19 2018-06-28 Vestas Wind Systems A/S Paired eccentric cam adjuster
US11486425B2 (en) 2016-12-19 2022-11-01 Vestas Wind Systems A/S Paired eccentric cam adjuster
US20220364585A1 (en) * 2021-05-17 2022-11-17 Raytheon Company Eccentric Bushing for Redundant Pinning of Removable Panels

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