CA1305250C - Apparatus for securing a functional block to a cassette tape - Google Patents
Apparatus for securing a functional block to a cassette tapeInfo
- Publication number
- CA1305250C CA1305250C CA000563245A CA563245A CA1305250C CA 1305250 C CA1305250 C CA 1305250C CA 000563245 A CA000563245 A CA 000563245A CA 563245 A CA563245 A CA 563245A CA 1305250 C CA1305250 C CA 1305250C
- Authority
- CA
- Canada
- Prior art keywords
- functional block
- magnetic tape
- main body
- tape
- housing
- 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 - Lifetime
Links
Landscapes
- Cleaning In General (AREA)
Abstract
ABSTRACT
An apparatus for securing a functional block to a magnetic tape cassette which includes a hollow housing and a magnetic tape having a positive operation surface and arranged within the hollow housing, includes a main body capable of being removably mounted to the hollow housing of the magnetic tape cassette from the outside of the housing. An elastic functional block securing member is extended from the main body into the hollow housing, and has a free end adapted to engage with the functional block to urge the functional block against the positive operation surface of the magnetic tape. The functional block may be a felt pad or magnet.
An apparatus for securing a functional block to a magnetic tape cassette which includes a hollow housing and a magnetic tape having a positive operation surface and arranged within the hollow housing, includes a main body capable of being removably mounted to the hollow housing of the magnetic tape cassette from the outside of the housing. An elastic functional block securing member is extended from the main body into the hollow housing, and has a free end adapted to engage with the functional block to urge the functional block against the positive operation surface of the magnetic tape. The functional block may be a felt pad or magnet.
Description
~3~S250 ~, .
TITLE: AP~ARATUS FOR SECURING A FUNCTIONAL BLOCK TO
A CASSETTE TAPE
BACKGROUND OF THE INVENTION
The present invention relates to an appar~tus for securing a functional block (e.g. a cleaning pad or a magnet) to a cassette tape, and more particularly to such an apparatus capable of being easily installed on and removed away from a cassette tape.
In general, the commercially available audio or video cassette tapes are re-recorded by using a tape ~récorder or video recorder. The erasing of the old ;content recorded in the tape occurs simultaneouly with the recording of the new content. In some cases, it is only desired that the content of the tape be erased. In this condition, the input signal level of the tape ~; recorder or video recorder must be set to zero level, and the record button is depressed to erase the content previously recorded in the tape. However, the speed of , ~ :, such an erasing process is slow. In order to overcome this problem, a tape erasing machine for audio or video ; tape has been develope,d. However, since the machine is ~ ~ designed for professional purpose, it is expensive and ,~
; bulky,~and cannot be widely used.
In regeneration or recording period, the magnetic tape of the audio or video tape passes through the ;magnetic head of a tape recorder or video recorder, and ,: ~ , ~ the positive operation surface of the magnetic tape keeps ~ ", , , 1 A
13~5Z50 , contact with the magnetic head. As used in the specification, the term "positive operation surface" is defined as one of the surfaces of the magnetic tape which contacts the ma~netic head in operation, and the term "negative surface" is defined as the other surface opposite to the positive operation surface of the magnetic tape. Therefore, some of the oxides and dusts on the positive operation and negative surfaces of the magnetic tape will accumulate on the magnetic head and in the vicinity of the passing path of the magnetic tape.
As a result, the signals are susceptible to distortion, the sound or picture quality is reduced, and the passing path of the magnetic tape may shift. Currently, the method to avoid this problem is to clean the magnetic head with a cleaning liquid or cleaning tape after operating the machine for a period of time. However, such cleaning processes are time-consuminy and inconvenient.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an apparatus for securing a functional block ~e.g. a cleaning pad or a magnet) to the housing of a aassette tape. After the apparatus and the functional block are installed on the housing, the cassette tape can ,:
be put into a tape recorder, video recorder or fast-forward/fast-rewind machine, and then the fast-forward or :: ~
~ 2 ~ .,:, :,, ~ -, , , fast-rewind button is depressed to rapidly clean the magnetic tape of the cassette tape or erase the recorded content of the magnetic tape.
As used in the specification, the term "functional block" refers to cleaning pads and magnets, and the like.
In accordance with the present invention, an apparatus for securing a functional block to a magnetic tape cassette which includes a hollow housing and a magnetic tape having a positive operation surface and arranged within the hollow housing, includes a main body capable of being removably mounted to the hollow housing of the magnetic tape cassette from the outside of the housing. An elastic functional block securing member is extended from the main body into the hollow housing, and has a free end adapted to enga~e with the functional block to urge the functional block against the positive operation surface of the magnetic tape.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be more fully understood from the following detailed description, taken in connection with the accompanying drawings which form an integral part of this application and in which:
Fig. 1 is a perspective view of a cleaning device for VHS video tapes in accordance with the first preferred embodiment of the present inventionS
Fig. 2 is a fragmentarily cross-sectional view of a VHS video tape with the cleaning device of Fig.
~ ~
~ .~,....
-13(~5250 installed therein;
Fig. 3 is a longitudinal sectional view of a cleaning device in accordance with the second preferred embodiment of the present invention;
Fig. 4 is a perspective view of a cleaning device for compact cassette tapes in accordance with the third preferred embodiment of the present invention, with parts broken away to clearly show its inner structure;
and Fig. 5 is a frag~entarily cross-sectional view of a compact cassette tape with the cleaning device of Fig. 4 installed thereon.
DETAILED DESCRIPTION OF THE PREPERRED EMBODIMENTS
Referring now to the drawings, it should be noted that a like member is designated with a like reference number. With reference to Figs. 1 and 2, a cleaning device for a VHS video tape in accordance with the first embodiment of the present invention includes a main body 10, an elastic member S0 and a cleaning pad 60. The main body 10 includes a first and a second elastic clamping plates 20 and 30. The first elastic clamping plate 20 has a first portion extending outwards from the main body 10 and forming a genexally right angle with the main body 10, and a second portion extending downwards from the first portion and forming a generally right angle with the first portion, as shown in Fig. 2. The second ,., elastic clamping plate 30 extends outwards from the main body 10, and forms a generally right angle with the main body 10. The elastic member 50 also extends from the main body 10, and the cleaning pad 60 is adhered on one of the surEaces of the elastic member 50.
Fig. 2 shows a cross-sectional view of the upper right corner of the VHS video tape (viewing from the back of the video tape) at which the cleaning device is suitable to be installed. In the installing operation, the user first opens the magnetic tape protective cover 101 of the VHS video tape, and then inserts the main body 10 into the space between the protective cover l01 and a right plate 104 of the housing for the magnetic tape 40 with the first elastic clamping plate 20 clamping on the right plate 104 and the second elastic clamping plate 30 clampiny on the inner wall of an opening 106 provided in the right plate 104. The opening 106 is provided for the video recorder to detect the termination of the magnetic tape. Once the installment of the main body 10 has been finished, the cleaning pad 60 adhered on the elastic member 50 is located in the inner space 103 of the housing, and urged against the positive operation surface .
: of the magnetic tape 40 with a proper pressure provided by the elastic member 50. Thereafter, the magnetic tape ~25 40 wlll be cleaned rapidly in a fast-forward or fast-;i rewind process. Also, the magnetic tape can be cleaned in a normal playing process before it passes through the magnetic head.
The cleaning pad 60 may be a felt pad or the like.
The elastic member 50 may be provided with a receiving slot 52, as shown in Fig. 3, in accordance with the second preferred embodiment of the present invention. In this condition, the felt pad 60 is shaped so that it can be removably inserted into the receiving slot 52 and firmly reside between the elastic member 50 and the first elastic clamping plate 20 with a portion thereof extending outwards to contact the magnetic tape.
Accordingly, when the feIt pad 60 becomes dirty, only the felt pad per se, not the main body lO or the elastic member 50, needs to be changed.
Based on the same main body 10 and elastic member 50 of the present invention, the cleaning pad 60 of Fig.
or 3 can be replaced by a magnet to form an erasing device for a magnetic tape. When the magnetic tape 40 passes through the magnet, the magnetic field of the magnet will erase the recorded content in the magnetic tape and return it back to a blank tape.
Although Figs. l to 3 and the above description all refers to a cleaning or erasing device for a VHS video tape, it should be understood that the present invention can be applied to any kinds of cassette tapes and endless tapes, such as BETA video tape, 8 mm video tape, VHS-C
video tape, compact cassette tape, micro cassette tape and the like, by modifying and varying the shapes of the main body and the elastic member without departing from ~30SZ50 the spirit of the present invention.
In the cases of BETA and V~IS video tapes, the main body 10 may be provided with a guide member 32 extending downwards therefrom and slightly bending toward the right plate 104 o~ the housing to facilitate the closing of the protective cover 101 and prevent the cover 101 from being hindered by the main body 10 when the main body 10 is installed thereon.
It should be understood that the main body, the guide member and the elastic member may be integrally ormed, or may include a plurality of pieces to simplify and facilitate the manufacturing process. In addition, the main body and the elastic member may be formed by a metal plate or respective proper materials.
Although the main body described above is removably engaged to the housing for a magnetic tape, it should be understood that it may be integrally formed with the housing and thus is non-removable.
Figs. 4 and 5 illustrate a cleaning or erasing 20~ deviae for a compact cassette tape in order to help the reader understand that the present invention can be applied to all kinds of cassette tapes. The cleaning device of Fig. 4 or 5 includes a main body 110, an elastic member 150 and a cleaning pad or magnet 160. The . - :, , .
main body 110 includes a base 112, a stopper 130 and a pair of elastic clamping plates 114 extending upwards from the base 112 and forming a generally right angle with the base 112. The stopper 130 also extends upwards ,~`'~ ' ' ' ' ' ~ , ~305250 from the hase 112 and forms a generally right angle with the base 112. The elastic member 150 is formed into an L-shape, and connects with the base 112. The cleaning pad 160 is adhered to the freè end of the elastic member 5 150, as shown in Fig. 4.
Fig. 5 shows a fragmentarily cross-sectional view of the upper operatins portion of a compact cassette tape with the cleaning or erasing device mounted thereon. The compact cassette tape has three upper operating openings.
The cleaning device or erasing device of Fig. 4 can be installed through any one of the operating openings. In Fig. 5~ the compact cassette tape is reversely positioned so that the operating opening 108 opens downwards. In the installing operation, the one pair of elastic clamping plates 114 are clamped on the outer walls of the housing of the compact cassette tape, and the stopper 130 and the shorter portion 152 of the L-shaped elastic member 150 cling to the inner surfaces of the operating opening 108 ~only the stopper 130 being shown in Fig. 5).
Therefore, the elatic member 150 is inserted into the operating opening 108 with the cleaning pad 160 keeping contact with the magnetic tape.
It should be understood that the free end of the elastic member 150 can be so designed that the cleaning pad or magnet can removably engage therewith to facilitate the change of a new cleaning pad or the change between a cleaning pad and a magnet.
.
13~52SO
Tt should be understood that the magnet may be shaped in order to erase the content recorded in a single selected track or in several selected tracks of the magnetic tape.
From the above description, it can be readily understood that the manufacturing cost of the present invention is very cheap, that the erasing or cleaning process can be very fast, and that the installment of the erasing or cleaning device can be rapidly and easily achieved by a user.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims which scope i5 to be accorded the broadest interpretation 50 as to encompass all such modifications : 20 and equivalent structures.
, :~
, . .
~';
., . 9 : :;
' - '
TITLE: AP~ARATUS FOR SECURING A FUNCTIONAL BLOCK TO
A CASSETTE TAPE
BACKGROUND OF THE INVENTION
The present invention relates to an appar~tus for securing a functional block (e.g. a cleaning pad or a magnet) to a cassette tape, and more particularly to such an apparatus capable of being easily installed on and removed away from a cassette tape.
In general, the commercially available audio or video cassette tapes are re-recorded by using a tape ~récorder or video recorder. The erasing of the old ;content recorded in the tape occurs simultaneouly with the recording of the new content. In some cases, it is only desired that the content of the tape be erased. In this condition, the input signal level of the tape ~; recorder or video recorder must be set to zero level, and the record button is depressed to erase the content previously recorded in the tape. However, the speed of , ~ :, such an erasing process is slow. In order to overcome this problem, a tape erasing machine for audio or video ; tape has been develope,d. However, since the machine is ~ ~ designed for professional purpose, it is expensive and ,~
; bulky,~and cannot be widely used.
In regeneration or recording period, the magnetic tape of the audio or video tape passes through the ;magnetic head of a tape recorder or video recorder, and ,: ~ , ~ the positive operation surface of the magnetic tape keeps ~ ", , , 1 A
13~5Z50 , contact with the magnetic head. As used in the specification, the term "positive operation surface" is defined as one of the surfaces of the magnetic tape which contacts the ma~netic head in operation, and the term "negative surface" is defined as the other surface opposite to the positive operation surface of the magnetic tape. Therefore, some of the oxides and dusts on the positive operation and negative surfaces of the magnetic tape will accumulate on the magnetic head and in the vicinity of the passing path of the magnetic tape.
As a result, the signals are susceptible to distortion, the sound or picture quality is reduced, and the passing path of the magnetic tape may shift. Currently, the method to avoid this problem is to clean the magnetic head with a cleaning liquid or cleaning tape after operating the machine for a period of time. However, such cleaning processes are time-consuminy and inconvenient.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an apparatus for securing a functional block ~e.g. a cleaning pad or a magnet) to the housing of a aassette tape. After the apparatus and the functional block are installed on the housing, the cassette tape can ,:
be put into a tape recorder, video recorder or fast-forward/fast-rewind machine, and then the fast-forward or :: ~
~ 2 ~ .,:, :,, ~ -, , , fast-rewind button is depressed to rapidly clean the magnetic tape of the cassette tape or erase the recorded content of the magnetic tape.
As used in the specification, the term "functional block" refers to cleaning pads and magnets, and the like.
In accordance with the present invention, an apparatus for securing a functional block to a magnetic tape cassette which includes a hollow housing and a magnetic tape having a positive operation surface and arranged within the hollow housing, includes a main body capable of being removably mounted to the hollow housing of the magnetic tape cassette from the outside of the housing. An elastic functional block securing member is extended from the main body into the hollow housing, and has a free end adapted to enga~e with the functional block to urge the functional block against the positive operation surface of the magnetic tape.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be more fully understood from the following detailed description, taken in connection with the accompanying drawings which form an integral part of this application and in which:
Fig. 1 is a perspective view of a cleaning device for VHS video tapes in accordance with the first preferred embodiment of the present inventionS
Fig. 2 is a fragmentarily cross-sectional view of a VHS video tape with the cleaning device of Fig.
~ ~
~ .~,....
-13(~5250 installed therein;
Fig. 3 is a longitudinal sectional view of a cleaning device in accordance with the second preferred embodiment of the present invention;
Fig. 4 is a perspective view of a cleaning device for compact cassette tapes in accordance with the third preferred embodiment of the present invention, with parts broken away to clearly show its inner structure;
and Fig. 5 is a frag~entarily cross-sectional view of a compact cassette tape with the cleaning device of Fig. 4 installed thereon.
DETAILED DESCRIPTION OF THE PREPERRED EMBODIMENTS
Referring now to the drawings, it should be noted that a like member is designated with a like reference number. With reference to Figs. 1 and 2, a cleaning device for a VHS video tape in accordance with the first embodiment of the present invention includes a main body 10, an elastic member S0 and a cleaning pad 60. The main body 10 includes a first and a second elastic clamping plates 20 and 30. The first elastic clamping plate 20 has a first portion extending outwards from the main body 10 and forming a genexally right angle with the main body 10, and a second portion extending downwards from the first portion and forming a generally right angle with the first portion, as shown in Fig. 2. The second ,., elastic clamping plate 30 extends outwards from the main body 10, and forms a generally right angle with the main body 10. The elastic member 50 also extends from the main body 10, and the cleaning pad 60 is adhered on one of the surEaces of the elastic member 50.
Fig. 2 shows a cross-sectional view of the upper right corner of the VHS video tape (viewing from the back of the video tape) at which the cleaning device is suitable to be installed. In the installing operation, the user first opens the magnetic tape protective cover 101 of the VHS video tape, and then inserts the main body 10 into the space between the protective cover l01 and a right plate 104 of the housing for the magnetic tape 40 with the first elastic clamping plate 20 clamping on the right plate 104 and the second elastic clamping plate 30 clampiny on the inner wall of an opening 106 provided in the right plate 104. The opening 106 is provided for the video recorder to detect the termination of the magnetic tape. Once the installment of the main body 10 has been finished, the cleaning pad 60 adhered on the elastic member 50 is located in the inner space 103 of the housing, and urged against the positive operation surface .
: of the magnetic tape 40 with a proper pressure provided by the elastic member 50. Thereafter, the magnetic tape ~25 40 wlll be cleaned rapidly in a fast-forward or fast-;i rewind process. Also, the magnetic tape can be cleaned in a normal playing process before it passes through the magnetic head.
The cleaning pad 60 may be a felt pad or the like.
The elastic member 50 may be provided with a receiving slot 52, as shown in Fig. 3, in accordance with the second preferred embodiment of the present invention. In this condition, the felt pad 60 is shaped so that it can be removably inserted into the receiving slot 52 and firmly reside between the elastic member 50 and the first elastic clamping plate 20 with a portion thereof extending outwards to contact the magnetic tape.
Accordingly, when the feIt pad 60 becomes dirty, only the felt pad per se, not the main body lO or the elastic member 50, needs to be changed.
Based on the same main body 10 and elastic member 50 of the present invention, the cleaning pad 60 of Fig.
or 3 can be replaced by a magnet to form an erasing device for a magnetic tape. When the magnetic tape 40 passes through the magnet, the magnetic field of the magnet will erase the recorded content in the magnetic tape and return it back to a blank tape.
Although Figs. l to 3 and the above description all refers to a cleaning or erasing device for a VHS video tape, it should be understood that the present invention can be applied to any kinds of cassette tapes and endless tapes, such as BETA video tape, 8 mm video tape, VHS-C
video tape, compact cassette tape, micro cassette tape and the like, by modifying and varying the shapes of the main body and the elastic member without departing from ~30SZ50 the spirit of the present invention.
In the cases of BETA and V~IS video tapes, the main body 10 may be provided with a guide member 32 extending downwards therefrom and slightly bending toward the right plate 104 o~ the housing to facilitate the closing of the protective cover 101 and prevent the cover 101 from being hindered by the main body 10 when the main body 10 is installed thereon.
It should be understood that the main body, the guide member and the elastic member may be integrally ormed, or may include a plurality of pieces to simplify and facilitate the manufacturing process. In addition, the main body and the elastic member may be formed by a metal plate or respective proper materials.
Although the main body described above is removably engaged to the housing for a magnetic tape, it should be understood that it may be integrally formed with the housing and thus is non-removable.
Figs. 4 and 5 illustrate a cleaning or erasing 20~ deviae for a compact cassette tape in order to help the reader understand that the present invention can be applied to all kinds of cassette tapes. The cleaning device of Fig. 4 or 5 includes a main body 110, an elastic member 150 and a cleaning pad or magnet 160. The . - :, , .
main body 110 includes a base 112, a stopper 130 and a pair of elastic clamping plates 114 extending upwards from the base 112 and forming a generally right angle with the base 112. The stopper 130 also extends upwards ,~`'~ ' ' ' ' ' ~ , ~305250 from the hase 112 and forms a generally right angle with the base 112. The elastic member 150 is formed into an L-shape, and connects with the base 112. The cleaning pad 160 is adhered to the freè end of the elastic member 5 150, as shown in Fig. 4.
Fig. 5 shows a fragmentarily cross-sectional view of the upper operatins portion of a compact cassette tape with the cleaning or erasing device mounted thereon. The compact cassette tape has three upper operating openings.
The cleaning device or erasing device of Fig. 4 can be installed through any one of the operating openings. In Fig. 5~ the compact cassette tape is reversely positioned so that the operating opening 108 opens downwards. In the installing operation, the one pair of elastic clamping plates 114 are clamped on the outer walls of the housing of the compact cassette tape, and the stopper 130 and the shorter portion 152 of the L-shaped elastic member 150 cling to the inner surfaces of the operating opening 108 ~only the stopper 130 being shown in Fig. 5).
Therefore, the elatic member 150 is inserted into the operating opening 108 with the cleaning pad 160 keeping contact with the magnetic tape.
It should be understood that the free end of the elastic member 150 can be so designed that the cleaning pad or magnet can removably engage therewith to facilitate the change of a new cleaning pad or the change between a cleaning pad and a magnet.
.
13~52SO
Tt should be understood that the magnet may be shaped in order to erase the content recorded in a single selected track or in several selected tracks of the magnetic tape.
From the above description, it can be readily understood that the manufacturing cost of the present invention is very cheap, that the erasing or cleaning process can be very fast, and that the installment of the erasing or cleaning device can be rapidly and easily achieved by a user.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims which scope i5 to be accorded the broadest interpretation 50 as to encompass all such modifications : 20 and equivalent structures.
, :~
, . .
~';
., . 9 : :;
' - '
Claims (6)
1. An apparatus for securing a functional block to a magnetic tape cassette which includes a hollow housing and a magnetic tape having a positive operation surface and arranged within said hollow housing, comprising:
a main body capable of being removably mounted to said hollow housing of said magnetic tape cassette from the outside of said housing:
an elastic functional block securing member extending from said main body into said hollow housing, and having a free end adapted to engage with said functional block to urge said functional block against said positive operation surface of said magnetic tape; and a pair of elastic clamping plates extending from said main body and capable of being removably clamped on said housing.
a main body capable of being removably mounted to said hollow housing of said magnetic tape cassette from the outside of said housing:
an elastic functional block securing member extending from said main body into said hollow housing, and having a free end adapted to engage with said functional block to urge said functional block against said positive operation surface of said magnetic tape; and a pair of elastic clamping plates extending from said main body and capable of being removably clamped on said housing.
2. The apparatus as claimed in claim 1, wherein said main body and said elastic functional block securing member are integrally formed.
3. The apparatus as claimed in claim 2, wherein said free end of said elastic functional block securing member includes a receiving slot, and wherein said functional block has a part removably and firmly received within said receiving slot.
4. The apparatus as claimed in claim 3, wherein said functional block is a cleaning pad.
5. The apparatus as claimed in claim 4, wherein said cleaning pad is a felt pad.
6. The apparatus as claimed in claim 3, wherein said functional block is a magnet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3590287A | 1987-04-08 | 1987-04-08 | |
| US035,902 | 1987-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1305250C true CA1305250C (en) | 1992-07-14 |
Family
ID=21885463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000563245A Expired - Lifetime CA1305250C (en) | 1987-04-08 | 1988-04-05 | Apparatus for securing a functional block to a cassette tape |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1305250C (en) |
-
1988
- 1988-04-05 CA CA000563245A patent/CA1305250C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |