CN201618379U - Ultra-isometric-type shot training station - Google Patents

Ultra-isometric-type shot training station Download PDF

Info

Publication number
CN201618379U
CN201618379U CN2010201448493U CN201020144849U CN201618379U CN 201618379 U CN201618379 U CN 201618379U CN 2010201448493 U CN2010201448493 U CN 2010201448493U CN 201020144849 U CN201020144849 U CN 201020144849U CN 201618379 U CN201618379 U CN 201618379U
Authority
CN
China
Prior art keywords
reinforcing bar
shot
fixed
slide plate
sliding sleeve
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.)
Expired - Fee Related
Application number
CN2010201448493U
Other languages
Chinese (zh)
Inventor
夏国滨
耿涛
肖立萍
孙长良
王玉莉
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.)
Harbin Normal University
Original Assignee
Harbin Normal University
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 Harbin Normal University filed Critical Harbin Normal University
Priority to CN2010201448493U priority Critical patent/CN201618379U/en
Application granted granted Critical
Publication of CN201618379U publication Critical patent/CN201618379U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Rehabilitation Tools (AREA)

Abstract

The utility model discloses an ultra-isometric-type shot training station relating to a shot training station and aiming at solving the problems that when an athlete adopts free hands and holds the shot for training, the gravity center of a shot is difficult to master, the angle of throwing a ball is not fixed, sliding steps are connected with forced pause, and advanced eccentric muscle stretching is not done before a throwing arm uses effort to push the shot. A front fixed plate and a sliding plate are fixedly provided with fixed bodies which are connected by stretchable elastomers; a fixed sleeve on the sliding plate is connected with a supporting column which is sheathed with a sliding sleeve; a steel bar passes through a steel bar outer sleeve and the shot to be fixedly connected with the sliding sleeve; a first spring is arranged between the shot and the steel bar outer sleeve; a driven shaft rotatably connected with a bracket is fixedly provided with a traction belt wheel; one end of the traction belt wheel is fixedly connected with the sliding plate, and the other end thereof is wound on the traction belt wheel; a driving motor is connected with the driven shaft by a transmission mechanism; a first contact switch is fixedly arranged on the front fixed plate and the sliding plate; a second contact switch is fixedly arranged on the rear fixed plate and the sliding plate; and a control switch is fixedly arranged on the sliding plate. The ultra-isometric-type shot training station is used for special training of the shot.

Description

Superfine long formula shot training station
Technical field
The utility model relates to a kind of shot training station, belongs to shot training assistive device.
Background technology
At present, the shot put exercise is mainly adopted free-hand and is held the shot training.And adopt above-mentioned exercise means to have following problem: promptly the center of gravity of shot is difficult holds, and angle of trajectory is fixing, and sliding steps connects final force and pauses, and sliding steps speed is not used, and does not have centrifugal elongation muscle in advance before throwing arm is firmly pushed the ball, and training effect is not good enough.
The utility model content
The purpose of this utility model is to adopt free-hand and hold the shot training for solving the sportsman, the center of gravity of shot is difficult for holding, angle of trajectory is unfixing, sliding steps connects final force and pauses, sliding steps speed is not used, do not have centrifugal elongation muscle in advance before throwing arm is firmly pushed the ball, the problem that training effect is not good enough provides a kind of superfine long formula shot training station.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: training station of the present utility model comprises shot; Training station of the present utility model also comprises base plate, slide plate, stretchable elastomer, front shoe, two fixed bodies, two fixed covers, two sliding sleeves, reinforcing bar, two support columns, drive motors, transmission mechanism, traction belt, traction belt wheel, support, driven shaft, at least two first jackscrews, first contact switch, second contact switch, gauge tap, rear fixed plate, connection handle, bearing pin, first spring, reinforcing bar overcoat, second jackscrew and at least one extension springs; Described two sliding sleeves are respectively preceding sliding sleeve and back sliding sleeve; Described base plate and ground are affixed, be disposed with front shoe and slide plate from A-P on the base plate, front shoe and base plate are affixed, slide plate and base plate are slidingly matched, respectively be fixed with a fixed body on front shoe and the slide plate, connect by stretchable elastomer between two fixed bodies, the back that is arranged on the fixed body on the slide plate is disposed with two fixed covers from A-P, two fixed covers are packed on the slide plate, support is arranged on the rear side of base plate, support and ground are affixed, the lower end of each support column is contained in the corresponding fixed cover and with it and removably connects, respectively be set with a sliding sleeve on each support column, the sidewall of each sliding sleeve is provided with at least one first screwed hole, each sliding sleeve removably connects by first jackscrew and the corresponding support column that is threaded with its first screwed hole, its central shaft position, shot upper edge is provided with reinforcing bar and passes the hole, the reinforcing bar that reinforcing bar passes shot passes the hole, the described reinforcing bar overcoat and first spring all are sleeved on the reinforcing bar, and first spring is arranged between the front end of the rear end of reinforcing bar overcoat and shot, reinforcing bar is provided with projection, projection on reinforcing bar overcoat and the reinforcing bar is slidingly matched, reinforcing bar puts outward and is provided with second screwed hole, second jackscrew is threaded with second screwed hole of reinforcing bar overcoat, projection on shot and the reinforcing bar is slidingly matched, be connected by at least one extension spring between the front end of reinforcing bar and the preceding sliding sleeve, be fixed with connection handle on the front side wall of back sliding sleeve, the rear end of reinforcing bar is hinged with the connection handle of back sliding sleeve by bearing pin, the downward-sloping setting in the rear end of reinforcing bar, the angle of reinforcing bar and horizontal plane is 35 ° ± 3 °, the two ends of driven shaft respectively are rotationally connected by a bearing and support, be fixed with a traction belt wheel on the driven shaft, one end of traction belt and the rear end of slide plate are affixed, the other end of traction belt is wrapped on the traction belt wheel, be in transmission connection by transmission mechanism between the output shaft of drive motors and the driven shaft, two first contacts of first contact switch are oppositely arranged, and on the rear end face of front shoe and respectively be fixed with one first contact of first contact switch on the front end face of slide plate, gauge tap is packed on the slide plate, the rear end of slide plate is provided with breach, rear fixed plate is packed on the base plate and is positioned at the indentation, there of slide plate, two second contacts of second contact switch are oppositely arranged, one second contact of second contact switch is packed on the front end face of rear fixed plate, another second contact of second contact switch is packed on the slide plate, and is positioned on the corresponding end face of rear fixed plate.
The beneficial effects of the utility model are: the utility model is based on correlation theories such as sport biomechanics and athletic physiologies, by new training method is plyometrice training method, while is in conjunction with the characteristics of shot put exercise, make the sportsman when shot put is practised, can hold the center of gravity of shot and the firmly order of finger, wrist and shoulder better, more accurately, practise by correct firmly track and angle of trajectory simultaneously, avoid sliding steps to connect the pause of final force, throwing arm muscle stretches rapidly and the speed of retraction is fast, strength is strong, and training effect is good.
Description of drawings
Fig. 1 is main TV structure figure of the present utility model, and Fig. 2 is the A-A cutaway view of Fig. 1, and Fig. 3 is the B portion enlarged drawing of Fig. 1, and Fig. 4 is the vertical view that back sliding sleeve 32 and protractor 37, connection handle 35 and bearing pin 36 are assembled together.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1-Fig. 4 present embodiment is described, the training station of present embodiment comprises shot 1; The training station of present embodiment also comprises base plate 2, slide plate 3, stretchable elastomer 4, front shoe 5, two fixed bodies 6, two fixed covers 7, two sliding sleeves 8, reinforcing bar 9, two support columns 10, drive motors 11, transmission mechanism 12, traction belt 13, traction belt wheel 14, support 15, driven shaft 16, at least two first jackscrews 17, first contact switch, second contact switch, gauge tap 27, rear fixed plate 30, connection handle 35, bearing pin 36, first spring 50, reinforcing bar overcoat 22, second jackscrew 24 and at least one extension spring 34; Described two sliding sleeves 8 are respectively preceding sliding sleeve 31 and back sliding sleeve 32; Described base plate 2 is affixed with ground, be disposed with front shoe 5 and slide plate 3 from A-P on the base plate 2, front shoe 5 is affixed with base plate 2, slide plate 3 is slidingly matched with base plate 2, respectively be fixed with a fixed body 6 on front shoe 5 and the slide plate 3, connect by stretchable elastomer 4 between two fixed bodies 6, the back that is arranged on the fixed body 6 on the slide plate 3 is disposed with two fixed covers 7 from A-P, two fixed covers 7 are packed on the slide plate 3, support 15 is arranged on the rear side of base plate 2, support 15 is affixed with ground, the lower end of each support column 10 is contained in the corresponding fixed cover 7 and with it and removably connects, respectively be set with a sliding sleeve 8 on each support column 10, the sidewall of each sliding sleeve 8 is provided with at least one first screwed hole, each sliding sleeve 8 removably connects with corresponding support column 10 by first jackscrew 17 that is threaded with its first screwed hole, its central shaft position, shot 1 upper edge is provided with reinforcing bar and passes hole 38, the reinforcing bar that reinforcing bar 9 passes shot 1 passes hole 38, the described reinforcing bar overcoat 22 and first spring 50 all are sleeved on the reinforcing bar 9, and first spring 50 is arranged between the front end of the rear end of reinforcing bar overcoat 22 and shot 1, reinforcing bar 9 is provided with projection 33 (can prevent that shot 1 is not when obtaining certain thrust, to front slide; Guarantee that simultaneously throwing arm elongates in advance), projection 33 on reinforcing bar overcoat 22 and the reinforcing bar 9 is slidingly matched, reinforcing bar overcoat 22 is provided with second screwed hole, second jackscrew 24 is threaded with second screwed hole of reinforcing bar overcoat 22, projection 33 on shot 1 and the reinforcing bar 9 is slidingly matched, be connected by at least one extension spring 34 between the front end of reinforcing bar 9 and the preceding sliding sleeve 31, be fixed with connection handle 35 on the front side wall of back sliding sleeve 32, the rear end of reinforcing bar 9 is hinged with the connection handle 35 of back sliding sleeve 32 by bearing pin 36, the downward-sloping setting in the rear end of reinforcing bar 9, reinforcing bar 9 is 35 ° ± 3 ° with the angle α of horizontal plane, the two ends of driven shaft 16 respectively are rotationally connected by a bearing and support 15, be fixed with a traction belt wheel 14 on the driven shaft 16, one end of traction belt 13 and the rear end of slide plate 3 are affixed, the other end of traction belt 13 is wrapped on the traction belt wheel 14, be in transmission connection by transmission mechanism 12 between the output shaft of drive motors 11 and the driven shaft 16, two first contacts 18 of first contact switch are oppositely arranged, and on the rear end face of front shoe 5 and respectively be fixed with one first contact 18 of first contact switch on the front end face of slide plate 3, gauge tap 27 is packed on the slide plate 3, the rear end of slide plate 3 is provided with breach, rear fixed plate 30 is packed on the base plate 2 and is positioned at the indentation, there of slide plate 3, two second contacts 28 of second contact switch are oppositely arranged, one second contact 28 of second contact switch is packed on the front end face of rear fixed plate 30, another second contact 28 of second contact switch is packed on the slide plate 3, and is positioned on the rear fixed plate 30 corresponding end faces.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1, the quantity of first jackscrew 17 of present embodiment is four, the sidewall of each sliding sleeve 8 is provided with two first screwed holes, and first jackscrew 17 that is threaded with it respectively is housed in two first screwed holes on each sliding sleeve 8.So be provided with, adjust the position of sliding sleeve up and down, thereby adjust the height of shot according to practitioner's height.Other is identical with embodiment one.
The specific embodiment three: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the transmission mechanism 12 of present embodiment is made up of driving gear 19 and driven gear 20; Driving gear 19 is packed on the output shaft of drive motors 11, driving gear 19 and driven gear 20 engagements, and driven gear 20 is packed on the driven shaft 16.So be provided with, simple in structure, stable drive.Other is identical with embodiment one or two.
The specific embodiment four: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the stretchable elastomer 4 of present embodiment is second spring or rubber band.So be provided with, utilize the elasticity maintenance front shoe of second spring or rubber band and the distance between the slide plate.Other is identical with embodiment one.
The specific embodiment five: in conjunction with Fig. 1 present embodiment is described, is connected by three extension springs 34 between the front end of the reinforcing bar 9 of present embodiment and the preceding sliding sleeve 31.So be provided with, the deviation that can guarantee the reinforcing bar angle of inclination is in scope of design.Other is identical with embodiment one.
The specific embodiment six: in conjunction with Fig. 1 and Fig. 3 present embodiment is described, present embodiment and the specific embodiment one, two, four or fives' difference is: the training station of present embodiment also comprises finger cap 21; Described finger cap 21 is sleeved on the reinforcing bar 9, and the projection 33 on the endoporus of finger cap 21 and the reinforcing bar 9 is slidingly matched, and the rear end of the front end of finger cap 21 and shot 1 is affixed.So be provided with, the practitioner can protect hand not to be scratched when carrying out the shot put training.
The specific embodiment seven: in conjunction with Fig. 1 present embodiment is described, the difference of the present embodiment and the specific embodiment six is: the training station of present embodiment also comprises four the 3rd jackscrews 25; The sidewall of each fixed cover 7 is provided with two the 3rd screwed holes, and each fixed cover 7 removably connects with corresponding support column 10 by two the 3rd jackscrews 25 that are threaded with two the 3rd screwed hole.So be provided with, when the practitioner trains in exercise sliding steps, free-hand shot put or without the reinforcing bar shot put, can dismantle support column, in order to avoid influence practitioner's sight line.
The specific embodiment eight: in conjunction with Fig. 1 present embodiment is described, the difference of the present embodiment and the specific embodiment one is: the training station of present embodiment also comprises two lacing wires 26; The support column 10 that is positioned at the front in described two support columns 10 is high support column, the support column 10 that is positioned at the back in two support columns 10 is short support column, high support column each side be provided with a lacing wire 26, the two ends of every lacing wire 26 removably connect with slide plate 3 and high support column respectively.So be provided with, can improve the stability of high support column.
The specific embodiment nine: in conjunction with Fig. 1 and Fig. 4 present embodiment is described, present embodiment and the specific embodiment one or eights' difference is: the training station of present embodiment also comprises protractor 37; Described protractor 37 is affixed with the front side wall of back sliding sleeve 32, and reinforcing bar 9 reclines mutually with protractor 37.The angle of inclination that can measure reinforcing bar easily so is set.
The sportsman is when carrying out the sliding steps training, and the start-up control switch makes oppositely (counterclockwise) rotation of drive motors, and slide plate is to front slide, when two first contacts of first contact switch contact, drive motors quits work, and at this moment, stretchable elastomer recovers normal condition; The start-up control switch rotates drive motors forward (clockwise), and slide plate slides backward, and when two second contacts of second contact switch contacted, drive motors quit work, and this moment, stretchable elastomer was tending towards the maximum tension state.The practitioner by holding the shot preparation, makes the compression of first spring when carrying out superfine long shot put training, throwing arm muscle elongates in advance.Utilize the slip simulation sliding steps of slide plate to go up the shot put exercise, also can pull down two support columns and do free-hand or, perhaps only utilize reinforcing bar (track) to carry out the standing shot putting exercise without reinforcing bar (track) shot put exercise at reinforcing bar (track).

Claims (9)

1. superfine long formula shot training station, described training station comprises shot (1); It is characterized in that: described training station also comprises base plate (2), slide plate (3), stretchable elastomer (4), front shoe (5), two fixed bodies (6), two fixed covers (7), two sliding sleeves (8), reinforcing bar (9), two support columns (10), drive motors (11), transmission mechanism (12), traction belt (13), traction belt wheel (14), support (15), driven shaft (16), at least two first jackscrews (17), first contact switch, second contact switch, gauge tap (27), rear fixed plate (30), connection handle (35), bearing pin (36), first spring (50), reinforcing bar overcoat (22), second jackscrew (24) and at least one extension spring (34); Described two sliding sleeves (8) are respectively preceding sliding sleeve (31) and back sliding sleeve (32); Described base plate (2) is affixed with ground, base plate (2) is gone up and is disposed with front shoe (5) and slide plate (3) from A-P, front shoe (5) is affixed with base plate (2), slide plate (3) is slidingly matched with base plate (2), respectively be fixed with a fixed body (6) on front shoe (5) and the slide plate (3), connect by stretchable elastomer (4) between two fixed bodies (6), the back that is arranged on the fixed body (6) on the slide plate (3) is disposed with two fixed covers (7) from A-P, two fixed covers (7) are packed on the slide plate (3), support (15) is arranged on the rear side of base plate (2), support (15) is affixed with ground, the lower end of each support column (10) is contained in the corresponding fixed cover (7) and with it and removably connects, respectively be set with a sliding sleeve (8) on each support column (10), the sidewall of each sliding sleeve (8) is provided with at least one first screwed hole, each sliding sleeve (8) removably connects with corresponding support column (10) by first jackscrew (17) that is threaded with its first screwed hole, its central shaft position, shot (1) upper edge is provided with reinforcing bar and passes hole (38), the reinforcing bar that reinforcing bar (9) passes shot (1) passes hole (38), described reinforcing bar overcoat (22) and first spring (50) all are sleeved on the reinforcing bar (9), and first spring (50) is arranged between the front end of the rear end of reinforcing bar overcoat (22) and shot (1), reinforcing bar (9) is provided with projection (33), projection (33) on reinforcing bar overcoat (22) and the reinforcing bar (9) is slidingly matched, reinforcing bar overcoat (22) is provided with second screwed hole, second jackscrew (24) is threaded with second screwed hole of reinforcing bar overcoat (22), projection (33) on shot (1) and the reinforcing bar (9) is slidingly matched, be connected by at least one extension spring (34) between the front end of reinforcing bar (9) and the preceding sliding sleeve (31), be fixed with connection handle (35) on the front side wall of back sliding sleeve (32), the rear end of reinforcing bar (9) is hinged with the connection handle (35) of back sliding sleeve (32) by bearing pin (36), the downward-sloping setting in rear end of reinforcing bar (9), reinforcing bar (9) is 35 ° ± 3 ° with the angle (α) of horizontal plane, the two ends of driven shaft (16) respectively are rotationally connected by a bearing and support (15), be fixed with a traction belt wheel (14) on the driven shaft (16), the rear end of one end of traction belt (13) and slide plate (3) is affixed, the other end of traction belt (13) is wrapped on the traction belt wheel (14), be in transmission connection by transmission mechanism (12) between the output shaft of drive motors (11) and the driven shaft (16), two first contacts (18) of first contact switch are oppositely arranged, and respectively be fixed with one first contact (18) of first contact switch on the rear end face of front shoe (5) and on the front end face of slide plate (3), gauge tap (27) is packed on the slide plate (3), the rear end of slide plate (3) is provided with breach, rear fixed plate (30) is packed in the indentation, there that slide plate (3) were gone up and be positioned to base plate (2), two second contacts (28) of second contact switch are oppositely arranged, one second contact (28) of second contact switch is packed on the front end face of rear fixed plate (30), another second contact (28) of second contact switch is packed on the slide plate (3), and is positioned on the corresponding end face of rear fixed plate (30).
2. superfine long formula shot training station according to claim 1, it is characterized in that: the quantity of described first jackscrew (17) is four, the sidewall of each sliding sleeve (8) is provided with two first screwed holes, and first jackscrew (17) that is threaded with it respectively is housed in two first screwed holes on each sliding sleeve (8).
3. superfine long formula shot training station according to claim 1 and 2, it is characterized in that: described transmission mechanism (12) is made up of driving gear (19) and driven gear (20); Driving gear (19) is packed on the output shaft of drive motors (11), driving gear (19) and driven gear (20) engagement, and driven gear (20) is packed on the driven shaft (16).
4. superfine long formula shot training station according to claim 1, it is characterized in that: stretchable elastomer (4) is second spring or rubber band.
5. superfine long formula shot training station according to claim 1 is characterized in that: be connected by three extension springs (34) between the front end of reinforcing bar (9) and the preceding sliding sleeve (31).
6. according to claim 1,2,4 or 5 described superfine long formula shot training stations, it is characterized in that: described training station also comprises finger cap (21); Described finger cap (21) is sleeved on the reinforcing bar (9), and the projection (33) on the endoporus of finger cap (21) and the reinforcing bar (9) is slidingly matched, and the rear end of the front end of finger cap (21) and shot (1) is affixed.
7. superfine long formula shot training station according to claim 6, it is characterized in that: described training station also comprises four the 3rd jackscrews (25); The sidewall of each fixed cover (7) is provided with two the 3rd screwed holes, and each fixed cover (7) removably connects with corresponding support column (10) by two the 3rd jackscrews (25) that are threaded with two the 3rd screwed hole.
8. superfine long formula shot training station according to claim 1, it is characterized in that: described training station also comprises two lacing wires (26); The support column (10) that is positioned at the front in described two support columns (10) is high support column, the support column (10) that is positioned at the back in two support columns (10) is short support column, high support column each side be provided with a lacing wire (26), the two ends of every lacing wire (26) removably connect with slide plate (3) and high support column respectively.
9. according to claim 1 or 8 described superfine long formula shot training stations, it is characterized in that: described training station also comprises protractor (37); Described protractor (37) is affixed with the front side wall of back sliding sleeve (32), and reinforcing bar (9) reclines mutually with protractor (37).
CN2010201448493U 2010-03-30 2010-03-30 Ultra-isometric-type shot training station Expired - Fee Related CN201618379U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201448493U CN201618379U (en) 2010-03-30 2010-03-30 Ultra-isometric-type shot training station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201448493U CN201618379U (en) 2010-03-30 2010-03-30 Ultra-isometric-type shot training station

Publications (1)

Publication Number Publication Date
CN201618379U true CN201618379U (en) 2010-11-03

Family

ID=43021833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201448493U Expired - Fee Related CN201618379U (en) 2010-03-30 2010-03-30 Ultra-isometric-type shot training station

Country Status (1)

Country Link
CN (1) CN201618379U (en)

Similar Documents

Publication Publication Date Title
NO336160B1 (en) Ergometer for ski training
CN205549379U (en) Device is tempered with multi -functional muscle to sports teaching
CN201551809U (en) Shot put trainer
CN203264197U (en) Fitness equipment
CN202376708U (en) Photoelectric hammer throw special strength training device
CN201676486U (en) Photoelectric special javelin strength training instrument
CN203303610U (en) Vibrating super-equal-length shot put special-strength trainer
CN201676487U (en) Special strength training device for overlength and equal-length javelin
CN201823267U (en) Special strength trainer for discus throw
CN201676489U (en) Photoelectric extra-length special javelin strength training instrument
CN201618379U (en) Ultra-isometric-type shot training station
CN201668922U (en) Sway competition bicycle
CN201189366Y (en) Short-distance race stem arm-oscillation power trainer
CN111317987A (en) Aerobics exercises trainer based on VR equipment
CN203315704U (en) Photoelectric vibrating shot trainer
CN201643614U (en) Photoelectric extra-equal-length shot training station
CN201815079U (en) Special photoelectric super-equal-length discus throw physical strength trainer
CN201625398U (en) Photoelectric type shot training table
CN202844515U (en) Table tennis ball hitting training device
CN201042598Y (en) Centripetal and anticentripetal force training device special for hammer
CN201147597Y (en) Climbing body-building apparatus
CN201676488U (en) Javelin professional training apparatus
CN210229069U (en) Novel basketball stands are used in teaching
CN203577229U (en) Auxiliary device for front handspring exercise
CN209997112U (en) Arm swinging strength trainer for sprint events

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101103

Termination date: 20110330