CN111904737A

CN111904737A - Multifunctional bed with treatment effect

Info

Publication number: CN111904737A
Application number: CN201910378127.XA
Authority: CN
Inventors: 吴土泉
Original assignee: Suzhou Yuewu Construction Machinery Co ltd
Current assignee: Suzhou Yuewu Construction Machinery Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-11-10

Abstract

The invention discloses a multifunctional bed with a treatment effect, which comprises a multifunctional sliding cabinet, automatic guardrail bedside boards, a multifunctional rehabilitation bed and end boards, wherein the number of the end boards is two, the two end boards are respectively and fixedly connected to two ends of the multifunctional rehabilitation bed, the automatic guardrail bedside boards which are symmetrically distributed are respectively and fixedly arranged on two sides of the multifunctional rehabilitation bed, and the multifunctional sliding cabinet is arranged at the upper end of the multifunctional rehabilitation bed. The multifunctional sliding cabinet is arranged, so that a user can conveniently work and cook on a bed, children can be prevented from rolling off the bed by arranging the bed side plate of the automatic guardrail, the lifting of the back lifting plate frame and the falling of the lower half bed plate frame can be controlled by the telescopic motor, the user can conveniently sit up, in addition, the lifting of the headrest and the lifting of the lumbar support rod can be controlled by the telescopic motor, a certain treatment effect can be realized on patients with lumbar disc herniation, and the multifunctional sliding cabinet also has the advantages of low manufacturing cost, simple structure and high practicability.

Description

Multifunctional bed with treatment effect

Technical Field

The invention relates to a multifunctional bed, in particular to a multifunctional bed with a treatment effect, and belongs to the technical field of bed structures.

Background

The bed is generally used in places such as bedrooms, dormitories, wards, hotels and the like, and refers to a support for sleeping, on the basis of meeting the sleeping requirements of ordinary people, a matched mattress, an air cushion, medical rehabilitation equipment and a urine bag hook are arranged, and other functions such as dining, electric back lifting, timed turning over, moving walking, standing, urine receiving, sitting and lying, heating and cooling are added, so that the sleeping requirements of the ordinary people can be met, and various requirements of children, severe patients, disabled people, old people, hospital patients, medical rehabilitation at home, study and life, office emergency and the like can also be met.

The existing multifunctional bed cannot perform rehabilitation treatment on patients suffering from lumbar diseases, the existing multifunctional bed is provided with few table body functions, and meanwhile, the existing multifunctional bed cannot play a certain role in protecting children.

Disclosure of Invention

The present invention is directed to a multifunctional bed with therapeutic effect to solve the above problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a multifunctional bed with therapeutic effect comprises a multifunctional sliding cabinet, automatic guardrail bedside boards, a multifunctional rehabilitation bed and two end boards, wherein the two end boards are respectively and fixedly connected with two ends of the multifunctional rehabilitation bed, the two sides of the multifunctional rehabilitation bed are respectively and fixedly provided with the automatic guardrail bedside boards which are symmetrically distributed, the upper end of the multifunctional rehabilitation bed is provided with the multifunctional sliding cabinet,

the multifunctional sliding cabinet comprises a working table, the upper end of the working table is fixedly connected with a cooking bench cabinet, two ends of the cooking bench cabinet are respectively and rotatably provided with cabinet doors, the cabinet doors are split doors, the upper end inside the working table is slidably provided with a working plate through a sliding rail,

the automatic guardrail bedside board comprises a side board, railings which are distributed uniformly and equidistantly are rotatably arranged above the side end of the side board, rope bodies are fixedly connected to the upper ends of the railings, slide rails are fixedly arranged at the upper ends of the railings, linkage rods which are fixedly connected with the railings are arranged at the side ends of the side board, which are far away from the railings, linkage boards are arranged at the side ends of the side board, which are far away from the railings, the linkage boards are rotatably connected with one ends of the linkage rods, linkage columns are fixedly connected to the side ends of the linkage boards, which are far away from the linkage rods, the automatic guardrail bedside board further comprises linkage telescopic motors, the output ends of the linkage telescopic motors are rotatably connected with the linkage columns,

the multifunctional rehabilitation bed comprises a first bed plate frame, support columns are fixedly connected with four corners of the lower end of the first bed plate frame, a motor support used for installing a telescopic motor is fixedly connected with the lower end of the first bed plate frame, a back lifting plate frame groove is formed in the end face of the first bed plate frame, the back lifting plate frame is rotatably installed in the back lifting plate frame groove, a third telescopic motor used for lifting the back from the plate frame is arranged at the lower end of the back lifting plate frame, a head support plate groove and a lumbar support rod groove are formed in the end face of the back lifting plate frame, a head support plate and a lumbar support rod are respectively arranged in the head support plate groove and the lumbar support rod groove, a first telescopic motor is respectively installed at the lower ends of the head support plate and the lumbar support rod, a second bed plate frame is rotatably connected with the first bed plate frame at one end of the first bed plate frame, second grillage lower extreme passes through branch fixedly connected with rather than the head rod that parallels, head rod one end is rotated and is connected with the second connecting rod of setting in first grillage below, first grillage is provided with the dwang of rotating the connection between two support columns with second grillage junction below, the dwang rotates through the keyset to be connected with and is used for controlling the flexible motor of dwang pivoted second, second connecting rod and dwang fixed connection.

As a preferred technical scheme of the invention, one end of the third telescopic motor, which is far away from the output end, is rotatably connected with the motor bracket through an adapter, and the output end of the third telescopic motor is rotatably connected with the back lifting plate frame through the adapter.

As a preferred technical solution of the present invention, the lower end of the first telescopic motor is fixedly mounted on the motor bracket.

As a preferable technical scheme of the invention, one end of the second telescopic motor, which is far away from the adapter plate, is rotatably installed at the lower end of the upper bed plate frame through the adapter piece.

As a preferable technical scheme of the invention, rollers which are arranged at the upper ends of the sliding rails in a rolling manner are rotatably arranged on two sides of the lower end of the working table.

As a preferable technical scheme of the invention, the middle part of the lumbar supporting rod is convex, and the longitudinal section of the lumbar supporting rod is triangular.

As a preferable technical solution of the present invention, the second plate frame is parallel to the first connecting rod, and when the upper half bed plate frame, the first plate frame and the second plate frame are horizontal, the first plate frame is parallel to the second connecting rod.

As a preferred technical scheme of the invention, the linkage telescopic motor is fixedly connected to the lower end of the upper half bed frame.

As a preferable technical solution of the present invention, the telescopic electric power tool further comprises a controller, and the controller is used for controlling the telescopic motor.

Compared with the prior art, the invention has the beneficial effects that:

the multifunctional sliding cabinet is arranged, so that a user can conveniently work and cook on a bed, children can be prevented from rolling off the bed by arranging the bed side plate of the automatic guardrail, the lifting of the back lifting plate frame and the falling of the lower half bed plate frame can be controlled by the telescopic motor, the user can conveniently sit up, in addition, the lifting of the headrest and the lifting of the lumbar support rod can be controlled by the telescopic motor, a certain treatment effect can be realized on patients with lumbar disc herniation, and the multifunctional sliding cabinet also has the advantages of low manufacturing cost, simple structure and high practicability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the multifunctional sliding cabinet of the present invention;

FIG. 3 is an exploded view of the multifunctional sliding cabinet of the present invention with the lower bed board frame removed;

FIG. 4 is a schematic view of the structure of the lower bed plate frame of the present invention;

FIG. 5 is a schematic view of the structure of the edge board of the automatic guardrail of the present invention;

fig. 6 is a schematic structural view of the multifunctional sliding cabinet of the present invention.

In the figure: 1. a multifunctional sliding cabinet; 101. a cooking bench cabinet; 102. a cabinet door; 103. a working plate; 104. a work table; 2. an automatic guardrail bedside board; 201. a rope body; 202. a railing; 203. a slide rail; 204. a linkage rod; 205. a linkage plate; 206. a linkage column; 207. a linkage telescopic motor; 208. a side plate; 3. a multifunctional rehabilitation bed; 301. an upper bed plate frame; 302. a head support plate; 303. lifting the back off the plate frame; 304. a lumbar support rod; 305. a lower bed plate frame; 3051. a first plate frame; 3052. a second plate rack; 3053. a strut; 3054. a first connecting rod; 3055. a second connecting rod; 306. a support pillar; 307. a motor bracket; 308. a head pallet slot; 309. a lumbar rod groove; 310. a first telescoping motor; 311. a second telescoping motor; 312. an adapter plate; 313. rotating the rod; 314. lifting the back away from the plate frame groove; 315. a third telescopic motor; 4. and an end plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a multifunctional bed with therapeutic effect, which comprises a multifunctional sliding cabinet 1, an automatic guardrail bedside board 2, a multifunctional rehabilitation bed 3 and end boards 4, wherein two end boards 4 are provided and are respectively and fixedly connected to two ends of the multifunctional rehabilitation bed 3, the automatic guardrail bedside boards 2 are respectively and fixedly arranged at two sides of the multifunctional rehabilitation bed 3, the multifunctional rehabilitation bed 3 is surrounded by the automatic guardrail bedside boards 2 and the end boards 4 to form a protection for the multifunctional rehabilitation bed 3, the multifunctional rehabilitation bed 3 is integrated into a whole, the multifunctional sliding cabinet 1 is provided at the upper end of the multifunctional rehabilitation bed 3,

a multifunctional sliding cabinet 1 comprises a working table 104, a hearth cabinet 101 is fixedly connected to the upper end of the working table 104, cabinet doors 102 are respectively rotatably mounted at two ends of the hearth cabinet 101, the cabinet doors 102 are split doors, lock catches are mounted on the doors, a working plate 103 is slidably mounted at the upper end inside the working table 104 through sliding rails, the working plate 103 is arranged at the top end of the inner wall of the working table 104, a pull groove is arranged at the end of the working plate 103, plate bodies arranged at two sides of the working table 104 enable the working table 104 to be in an N shape,

the automatic guardrail bedside board 2 comprises a side plate 208, railings 202 which are uniformly and equidistantly distributed are rotatably arranged above the side end of the side plate 208, a rope body 201 is fixedly connected to the upper ends of the railings 202, the rope body 201 is arranged above the railings 202, a slide rail 203 is fixedly arranged at the upper end of each railing 202, a linkage rod 204 fixedly connected with the railing 202 is arranged at the side end of the side plate 208, which is far away from the railing 202, a linkage plate 205 is arranged at the side end of the side plate 208, which is far away from the railing 202, the linkage plate 205 is rotatably connected with one end of each linkage rod 204, a linkage column 206 is fixedly connected to the side end of the linkage plate 205, which is far away from the linkage rod 204, the automatic guardrail bedside board 2 further comprises a linkage telescopic motor 207, the output end of the linkage telescopic motor 207,

the multifunctional rehabilitation bed 3 comprises an upper half bed plate frame 301, supporting columns 306 are fixedly connected at four corners of the lower end of the upper half bed plate frame 301, a motor support 307 for installing a telescopic motor is fixedly connected at the lower end of the upper half bed plate frame 301, a back lifting plate frame groove 314 is formed in the end surface of the upper half bed plate frame 301, a back lifting plate frame 303 is rotatably installed in the back lifting plate frame groove 314, a third telescopic motor 315 for lifting the back lifting plate frame 303 is arranged at the lower end of the back lifting plate frame 303, a head supporting plate groove 308 and a lumbar supporting rod groove 309 are formed in the end surface of the back lifting plate frame 303, a head supporting plate 302 and a lumbar supporting rod 304 are respectively arranged in the head supporting plate groove 308 and the lumbar supporting rod groove 309, a first telescopic motor 310 is installed at the lower ends of the head supporting plate 302 and the lumbar supporting rod 304, a lower half bed plate frame 305 is rotatably installed at one end of the upper half bed plate frame 301, the lower half bed plate frame 305 comprises a first plate frame 3051 and a second plate, the lower end of the second plate frame 3052 is fixedly connected with a first connecting rod 3054 parallel to the second plate frame 3052 through a supporting rod 3053, one end of the first connecting rod 3054 is rotatably connected with a second connecting rod 3055 arranged below the first plate frame 3051, a rotating rod 313 rotatably connected between the two supporting columns 306 is arranged below the joint of the upper half plate frame 301 and the lower half plate frame 305, the rotating rod 313 is rotatably connected with a second telescopic motor 311 for controlling the rotating rod 313 to rotate through an adapter plate 312, the second connecting rod 3055 is fixedly connected with the rotating rod 313, one end of the second telescopic motor 311 departing from the adapter plate 312 is rotatably arranged at the lower end of the upper half plate frame 301 through an adapter, one end of the third telescopic motor 315 departing from the output end is rotatably connected with the back of the motor support 307 through the adapter, the output end of the third telescopic motor 315 is rotatably connected with the lifting-off plate frame 303 through the adapter, the lower end of the first, the second plate frame 3052 is parallel to the first connecting rod 3054, and when the first plate frame 301, the first plate frame 3051 and the second plate frame 3052 are horizontal, the first plate frame 3051 is parallel to the second connecting rod 3055.

The gyro wheel of roll installation in slide rail 203 upper end is all rotated to work table 104 lower extreme both sides, and the gyro wheel joint is on slide rail 203 for drive multi-functional sliding cabinet 1 displacement around, and slide rail 203 both ends all are equipped with the end cap, prevent multi-functional sliding cabinet 1 roll-off track.

The middle part of the lumbar supporting rod 304 is convex, the longitudinal section of the lumbar supporting rod is triangular, the position of the lumbar supporting rod 304 is arranged at the center of the upper end of the multifunctional rehabilitation bed 3, the waist of a user lying above the lumbar supporting rod is matched in position, and the longitudinal section of the lumbar supporting rod is triangular, so that when the lumbar supporting rod is lifted up through the first telescopic motor 310, a good massage effect is achieved on the waist of a lumbar patient.

The linkage telescopic motor 207 is fixedly connected with the lower end of the upper bed plate frame 301.

The telescopic motor is characterized by further comprising a controller, and the controller is used for controlling the telescopic motor.

We will now explain the specific working principle of the present invention: when the device is used, the controller controls the extension and retraction of the linkage extension motor 207, the output end of the linkage extension motor 207 drives the linkage plate 205 to move back and forth through the linkage post 206, the linkage plate 205 drives the linkage rod 204 to rotate, the linkage rod 204 is fixedly connected with the railings 202 so as to drive the railings 202 to rotate, the linkage plate 205 controls the linkage rods 204, so that the railings 202 can be driven to rotate simultaneously, when the railings 202 are parallel to the ground, the railings 202 cannot influence the getting on and off of a user, when the railings 202 are vertical to the ground, because the rope body 201 is connected between each railing 202, the device can play a role in protecting the user on the bed, and prevent children from rolling off the bed,

the multifunctional sliding cabinet 1 is arranged on the sliding rail 203 above the automatic guardrail bedside board 2 in a rolling way through the roller at the lower end of the working table 104, the position of the multifunctional sliding cabinet 1 above the multifunctional recovery bed 3 can be adjusted, a user can work on the working board 103 by pulling the working board 103, the operation of children on the working board 103 is convenient, meanwhile, cooking tools such as an induction cooker and the like can be placed in the cooking bench cabinet 101, the cooking is convenient, the cabinet doors 102 are arranged at the two ends of the cooking bench cabinet 101, the cooking in the inner part is convenient, the ventilation is convenient, the steam blockage is prevented,

the controller controls the third telescopic motor 315, the third telescopic motor 315 can drive the back to lift off the plate frame 303 or to be parallel to the upper half bed plate frame 301, when the back is lifted, the back of a user lying on the multifunctional rehabilitation bed 3 can be lifted, so that the user can sit conveniently, the telescopic control of the second telescopic motor 311 can control the rotating rod 313 to rotate through the adapter plate 312, when the rotating rod 313 rotates, the lower half bed plate frame 305 is driven to rotate downwards, one end of the first plate frame 3051, which is far away from the upper half bed plate frame 301, is driven to rotate downwards, due to the action of the supporting rod 3053, the second plate frame 3052 and the first connecting rod 3054 are always parallel to the upper half bed plate frame 301, the user can put feet above the second plate frame 2 when the back is lifted off the plate frame 303, so that the user can sit conveniently, the user can use the multifunctional sliding cabinet 1 to work on a desktop or cook, the legs and feet are convenient for people who are not convenient to cook or work,

when the upper end face of the multifunctional rehabilitation bed 3 is in a parallel state with the ground, the first telescopic motor 310 is controlled by the controller to drive the lumbar supporting rod 304 to ascend, the lumbar supporting rod 304 supports the waist of a person lying on the upper end of the multifunctional rehabilitation bed 3, a rehabilitation therapy for the waist of a user with lumbar disc herniation is played, the distance between the waist of the user with lumbar disc herniation and the bed surface when the user lies down is reduced, the longitudinal section of the lumbar supporting rod 304 is triangular, the top of the triangle supports the waist of the patient, so that the patient with lumbar disc herniation feels comfortable, a massage effect is played, meanwhile, the first telescopic motor 310 at the lower end of the head supporting plate 302 can be controlled by the controller to drive the head supporting plate 302 to ascend and descend, the height of the headrest of the user can be conveniently adjusted, and the.

In conclusion, the multifunctional sliding cabinet 1 is arranged, so that a user can conveniently work and cook on a bed, the automatic guardrail bedside board 2 is arranged, children can be prevented from rolling down on the bed, the lifting of the back lifting board frame 303 and the falling of the lower half bed board frame 305 can be controlled through the telescopic motor, the user can conveniently sit up, the lifting of the headrest and the lifting of the lumbar supporting rod 304 can be controlled through the telescopic motor, a certain treatment effect can be achieved on patients with lumbar disc herniation, and the multifunctional sliding cabinet has the advantages of being low in manufacturing cost, simple in structure and high in practicability.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multifunctional bed with treatment effect is characterized by comprising a multifunctional sliding cabinet (1), two automatic guardrail bedside boards (2), a multifunctional recovery bed (3) and two end boards (4), wherein the two end boards (4) are respectively and fixedly connected with the two ends of the multifunctional recovery bed (3), the automatic guardrail bedside boards (2) which are symmetrically distributed are respectively and fixedly arranged on the two sides of the multifunctional recovery bed (3), the multifunctional sliding cabinet (1) is arranged at the upper end of the multifunctional recovery bed (3),

the multifunctional sliding cabinet (1) comprises a working table (104), the upper end of the working table (104) is fixedly connected with a cooking bench cabinet (101), two ends of the cooking bench cabinet (101) are respectively rotatably provided with a cabinet door (102), the cabinet doors (102) are split doors, the upper end inside the working table (104) is slidably provided with a working plate (103) through a sliding rail,

automatic guardrail bedside board (2), automatic guardrail bedside board (2) includes curb plate (208), curb plate (208) side top is rotated and is installed railing (202) that are even equidistance and distribute, just upper end fixedly connected with rope body (201) between a plurality of railings (202), railing (202) upper end fixed mounting has slide rail (203), the side that curb plate (208) deviate from railing (202) is equipped with gangbar (204) with railing (202) fixed connection, the side that curb plate (208) deviate from railing (202) is equipped with gangbar (205), just gangbar (205) rotate with each gangbar (204) one end and be connected, the side fixedly connected with linkage post (206) that gangbar (204) deviate from gangbar (205) of gangbar (205), automatic guardrail bedside board (2) still includes linkage flexible motor (207), the output and linkage post (206) of flexible motor (207) rotate and be connected,

the multifunctional rehabilitation bed (3) comprises a first bed plate frame (301), support columns (306) are fixedly connected to the four corners of the lower end of the first bed plate frame (301), a motor support (307) used for installing a telescopic motor is fixedly connected to the lower end of the first bed plate frame (301), a back lifting plate frame groove (314) is formed in the end face of the first bed plate frame (301), the back lifting plate frame groove (314) is rotatably installed at the back, a back lifting plate frame (303) is arranged at the lower end of the back lifting plate frame (303), a third telescopic motor (315) used for lifting the back lifting plate frame (303) is arranged at the lower end of the back lifting plate frame (303), a head support plate groove (308) and a lumbar support rod groove (309) are formed in the back lifting plate frame (303), and a head support plate (302) and a lumbar support rod (304) are respectively arranged in the head support plate groove (308) and the lumbar support rod groove (309), the lower ends of the head supporting plate (302) and the lumbar supporting rod (304) are respectively provided with a first telescopic motor (310), one end of the first bed plate frame (301) is rotatably provided with a second bed plate frame (305), the second bed plate frame (305) comprises a first bed plate frame (3051) and a second bed plate frame (3052) rotatably connected with the first bed plate frame, the lower end of the second bed plate frame (3052) is fixedly connected with a first connecting rod (3054) parallel to the first bed plate frame through a supporting rod (3053), one end of the first connecting rod (3054) is rotatably connected with a second connecting rod (3055) arranged below the first bed plate frame (3051), a rotating rod (313) rotatably connected between two supporting columns (306) is arranged below the joint of the first bed plate frame (301) and the second bed plate frame (305), and the rotating rod (313) is rotatably connected with a second telescopic motor (311) for controlling the rotating rod (313) to rotate through a transfer plate (312), the second connecting rod (3055) is fixedly connected with the rotating rod (313).

2. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: the one end that third flexible motor (315) deviates from the output passes through the adaptor and is connected with motor support (307) rotation, just the output of third flexible motor (315) is lifted off grillage (303) rotation with the back through the adaptor and is connected.

3. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: the lower end of the first telescopic motor (310) is fixedly arranged on the motor bracket (307).

4. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: one end of the second telescopic motor (311) departing from the adapter plate (312) is rotatably installed at the lower end of the upper half bedplate rack (301) through the adapter piece.

5. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: both sides of the lower end of the working table (104) are rotatably provided with rollers which are arranged at the upper end of the sliding rail (203) in a rolling way.

6. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: the middle part of the lumbar supporting rod (304) is convex, and the longitudinal section of the lumbar supporting rod is triangular.

7. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: second grillage (3052) and first connecting rod (3054) parallel, first grillage (301), first grillage (3051) and second grillage (3052) are parallel when being in the level, first grillage (3051) and second connecting rod (3055).

8. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: the linkage telescopic motor (207) is fixedly connected to the lower end of the upper bed plate frame (301).

9. A multifunctional bed with therapeutic effect as claimed in claim 1, wherein: further comprising a controller for controlling the telescopic motor as claimed in claims 1-4 and claim 8.