A cassette arrester

Abstract

A cassette arrester Embodiments disclosed herein relate to electrical energy storage device charging and interchange stations, and more particularly to a cassette arrester in a dock of an electrical energy storage device charging and interchange station and / or a vehicle. Embodiments herein disclose a cassette arrester within an electrical energy storage device charging and interchange station and a dock of a vehicle, wherein the cassette arrester can securely lock the cassette into place, preventing any movement that could impede energy transfer or cause damage.

Description

A cassette arresterCROSS REFERENCE TO RELATED APPLICATIONThis application is based on and derives the benefit of Indian Provisional Application IN202441065021, the contents of which are incorporated herein by reference.TECHNICAL FIELD

[0001] Embodiments disclosed herein relate to electrical energy storage device interchange systems, and more particularly to a cassette arrester for arresting a cassette within a dock of an electrical energy storage device charging and interchange station and / or a vehicle.BACKGROUND

[0002] Electrical energy storage device interchange technology offers a promising solution for electric vehicles (EVs) seeking to overcome the limitations of traditional charging infrastructure. With the use of cassettes enclosing multiple electrical energy storage devices, vehicles can swiftly exchange depleted electrical energy storage device for fully charged ones, reducing downtime, and addressing range anxiety. However, ensuring the stability of these cassettes within both the vehicle and the charging station is crucial for seamless operation.

[0003] In smaller electric vehicles, space constraints often necessitate vertical or inclined mounting of batteries. In horizontal battery mounting systems, the risk of electrical energy storage device slippage is heightened, especially when the vehicle is moving. This poses significant challenges, as the unintended movement of the electrical energy storage device cassette can disrupt energy transfer and potentially damage electrical and fluid connectors, compromising the safety and efficiency of the interchange process.

[0004] Hence, there is a need in the art for solutions which will overcome the above mentioned drawback(s), among others.OBJECTS

[0005] A principal object of embodiments herein is to disclose a cassette arrester within an electrical energy storage device charging and interchange station and a dock of a vehicle, wherein the cassette arrester can securely lock a cassette within a dock of an electrical energy storage device charging and interchange station and / or a vehicle, preventing any movement that could impede energy transfer or cause damage.

[0006] Another object of embodiments herein is to disclose a cassette arrester that is simple in construction, compact, and easy to operate.

[0007] Yet another object of embodiments herein is to disclose a cassette arrester that requires minimal investment.

[0008] Still, another object of embodiments herein is to disclose a cassette arrester that is easy to operate and maintain.

[0009] Still, another object of embodiments herein is to disclose a cassette arrester that ensures secure fixation of electrical energy storage device cassettes during both charging and vehicle motion conditions.

[0010] Still, another object of embodiments herein is to disclose a cassette arrester that is suitable for use in vertically, horizontally, or inclined-mounted cassette configurations.

[0011] Still, another object of embodiments herein is to disclose a cassette arrester that minimizes the risk of electrical and fluid connector damage during cassette interchange or vehicle motion.

[0012] Still, another object of embodiments herein is to disclose a cassette arrester that supports seamless and reliable energy transfer between the cassette and the vehicle or station.

[0013] Still, another object of embodiments herein is to disclose a cassette arrester that enhances safety by preventing unintended displacement or vibration-induced motion of the cassette.

[0014] Still, another object of embodiments herein is to disclose a cassette arrester that can be retrofitted or integrated into existing cassette-based dock of an electrical energy storage device charging and interchange station and / or a vehicle without significant structural modifications.

[0015] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating at least one embodiment and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.SUMMARY

[0016] A cassette arrester includes a cam plate having a head, a body, and a tapered section. A housing is securely mounted on a panel and includes a body with a pair of arms extending perpendicularly from its rear face. A receiver for receiving the body, is provided with a cavity to receive the tapered section of the cam plate.

[0017] A bolt holder is also mounted on the panel and holds a pair of guide bolts. The bolt holder is an elongated component with apertures that hold the guide bolts, which help constrain the cam plate’s movement to a linear path. These guide bolts pass through bolt receivers located on extensions of the cam plate head, and a pair of resilient coils are arranged around the guide bolts between the bolt holder and the cam plate head. The resilient coils apply resistance against the cam plate head to maintain its position.

[0018] The cassette arrester may be operated using a key, which has a head and a shaft mounted off-center from the head. A key insert is provided on the housing to allow the key head to reach the cam opening. The key’s head is circular, and its off-center shaft produces a non-circular or oval rotation, which is necessary to shift the cam plate from the locked to the unlocked position. The cam plate head is positioned at the top and includes side extensions that extend beyond the body’s width, each with a bolt receiver. The cam plate body includes a cam opening designed with a profile that enables linear movement when actuated by the key. The tapered section is located at the bottom of the cam plate and narrows gradually. In the locked state, the cam plate’s tapered section fits snugly in the receiver cavity, while in the unlocked state, it disengages. For proper guidance, guide rails or a guide passage may be included on the cam plate’s external surface.

[0019] Inside the housing, the arm surfaces and body define a passage that accommodates the cam plate body for linear travel. The housing prevents the cam plate head from passing through this passage. Additional guide rails or a passage may also be included inside the housing for alignment. The receiver’s cavity closely fits the tapered cam plate section to secure the locked state.

[0020] The cassette arrester is designed to securely lock a cassette in a dock or charging station, preventing unintended movement that could affect energy transfer or cause damage. This configuration ensures high reliability and safety for electrical energy storage device interchange applications.BRIEF DESCRIPTION OF FIGURES

[0021] Embodiments herein are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the following illustrative drawings. Embodiments herein are illustrated by way of examples in the accompanying drawings, in which:

[0022] FIG. 1 illustrates an isometric view of a cassette arrester, according to embodiments as disclosed herein;

[0023] FIG. 2 illustrates a front view of the cassette arrester, according to embodiments as disclosed herein;

[0024] FIG. 3 illustrates an isometric view of a cam plate of the cassette arrester, according to embodiments as disclosed herein;

[0025] FIG. 4 illustrates an isometric view of a housing of the cassette arrester, according to embodiments as disclosed herein;

[0026] FIG. 5 illustrates an isometric view of a receiver of the cassette arrester, according to embodiments as disclosed herein;

[0027] FIG. 6 illustrates an isometric view of the cassette arrester, according to embodiments as disclosed herein;

[0028] FIGs. 7A, 7B & 7C illustrate a front, side, and isometric view of a key, according to embodiments as disclosed herein;

[0029] FIG. 8 illustrates a rear view of the cassette arrester in locked condition, according to embodiments as disclosed herein; and

[0030] FIG. 9 illustrates a rear view of the cassette arrester in the unlocked condition, according to embodiments as disclosed herein.DETAILED DESCRIPTION

[0031] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as not to unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

[0032] For the purposes of interpreting this specification, the definitions (as defined herein) will apply, and whenever appropriate, the terms used in the singular will also include the plural and vice versa. It is to be understood that the terminology used herein is for the purposes of describing particular embodiments only and is not intended to be limiting. The terms “comprising”, “having” and “including” are to be construed as open-ended terms unless otherwise noted.

[0033] The words / phrases "exemplary", “example”, “illustration”, “in an instance”, “and the like”, “and so on”, “etc.”, “etcetera”, “e.g.,” , “i.e.,” are merely used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein using the words / phrases "exemplary", “example”, “illustration”, “in an instance”, “and the like”, “and so on”, “etc.”, “etcetera”, “e.g.,” , “i.e.,” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0034] Embodiments herein may be described and illustrated in terms of blocks which carry out a described function or functions. These blocks, which may be referred to herein as managers, units, modules, hardware components or the like, are physically implemented by analogue and / or digital circuits such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits and the like, and may optionally be driven by a firmware. The circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like. The circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform otherfunctions of the block. Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the disclosure. Likewise, the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the disclosure.

[0035] It should be noted that elements in the drawings are illustrated for the purposes of this description and ease of understanding and may not have necessarily been drawn to scale. For example, the flowcharts / sequence diagrams illustrate the method in terms of the steps required for understanding aspects of the embodiments as disclosed herein. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the present embodiments so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. Furthermore, in terms of the system, one or more components / modules which comprise the system may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the present embodiments so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

[0036] The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any modifications, equivalents, and substitutes in addition to those which are particularly set out in the accompanying drawings and the corresponding description. Usage of words such as first, second, third etc., to describe components / elements / steps is for the purposes of this description and should not be construed as sequential ordering / placement / occurrence unless specified otherwise.

[0037] The embodiments herein achieve an arrester that securely retains the cassette within a dock of an electrical energy storage device charging and interchange station and / or a vehicle, thereby preventing unintended movement or slippage during charging, discharging, or transit conditions. The arrester enhances the stability of the cassette mounting, safeguards electrical and fluid connector integrity, and ensures reliable energy transfer. Referring now to the drawings, and more particularly to FIGS. 1 through 9, where similar reference charactersdenote corresponding features consistently throughout the figures, there are shown embodiments.

[0038] The following terms / components / systems and corresponding reference numerals have been referred to herein:100 - Cassette Arrester (hereinafter also referred to as an arrester)110 - Housing112 - Key Insert114 - Body116 - Arms120 - Cam Plate122 - Head123 - Bolt Receiver124 - Body126 - Cam Opening128 - Tapered Section130 - Receiver132 - Cavity140 - Guide Bolt150 - Bolt holder160 - Resilient Coil170 - Panel180 - Key182 - Head184 - Shaft

[0039] Embodiments herein disclose a cassette arrestor as illustrated in FIGs. 1-9. The cassette arrester 100 comprises a housing 110, a cam plate 120, a receiver 130, a plurality of guide bolts 140, a bolt holder 150, and resilient coils 160. These components work together tosecurely lock a cassette in place within a dock of an electrical energy storage device charging and interchange station and / or a vehicle, preventing movement that could impede energy transfer or cause damage.

[0040] The cam plate 120 (as shown in FIG. 3) has a head 122, a body 124, and a tapered section 128. The head 122 is located at the operational top of the cam plate 120 and features extensions on either side that extend beyond the width of the body 124. Each extension is provided with a bolt receiver 123. The body 124 is provided with a cam opening 126. The cam opening 126 can be an aperture or cavity designed with a specific cam profile (i.e., the opening within the cam plate). The cam profile enables the cam plate 120 to move linearly when operated with a key 180. A tapered section 128 is positioned at the operational bottom of the cam plate 120 and is configured to have a tapered profile; i.e., the cam plate 120 has a gradually narrowing profile along its length. In an embodiment herein, a plurality of guide rails or a guide passage may be provided on the external surface of the body 124 for guidance. In alternative embodiments, the cam plate 120 may be constructed from various materials (such as, but not limited to, metal alloys high-strength polymers, and so on), to enhance durability and reduce weight. Additionally, the cam opening 126 could be designed with different profiles to accommodate various key types or to increase security.

[0041] A housing 110 (as illustrated in FIG. 4) is securely mounted on a panel 170 using fasteners. The housing 110 has a body 114 and a pair of arms 116 extending substantially perpendicular from the rear face of the body 114. The inner surface of the arm 116 and the body 114 integrally define a passage 118. The passage 118 is configured to accommodate the body 124 of the cam plate 120 allowing for linear movement within the passage. The housing 110 is further configured to restrict the head 122 of the cam plate 122 from passing through the passage 118. Additionally, the housing 100 features a key insert 112, wherein the key insert 112 is an aperture or cavity that allows a key head 182 to pass through it and access the cam opening 126 of the cam plate 120. In an embodiment herein, a plurality of guide rails or a guide passage may be provided on the internal surface of the body 114 for guidance. In alternative embodiments, the housing 110 could be made from different materials (such as, but not limited to, reinforced plastics, composite materials, and so on) to reduce weight while maintaining structural integrity. The shape and size of the key insert 112 could also be varied to accommodate different key designs or to enhance security features.

[0042] In some embodiments, the inner surfaces of the passage 118 may be coated with low-friction materials or incorporate lubrication channels to further enhance the movement of the cam plate 120.

[0043] In some embodiments, the housing 110 may incorporate additional elements (such as, but not limited to, seals, gaskets, and so on) to protect internal components from environmental factors (for example, dust, moisture, debris, and so on). These protective features can be integrated into the design of the body 114 or added as separate components during assembly.

[0044] The housing 110 may also be designed with considerations for ease of maintenance and servicing. This could include removable panels or access points that allow for inspection and replacement of internal components without the need for complete disassembly of the arrester.

[0045] A receiver 130 (as illustrated in FIG. 5) is provided with a cavity 132 that complements the tapered section 128 of the cam plate 120. In a lock condition, the tapered profile of the tapered section 128 fits snugly within the cavity 132. In an unlock condition, the tapered section is removed from the cavity 132.

[0046] The receiver 130 can be constructed from a durable material, (such as, but not limited to, hardened steel, a high-strength alloy, and so on) to withstand repeated locking and unlocking cycles without wear or deformation. The receiver 130 may be securely mounted on the panel 170 or integrated into the structure of the charging station or vehicle dock, depending on the specific implementation of the cassette arrester.

[0047] The cavity 132 of the receiver 130 facilitates the locking mechanism. The cavity 132 is precision-machined to match the profile of the tapered section 128 of the cam plate 120. This complementary design ensures a secure lock when the tapered section 128 is fully inserted into the cavity 132. The cavity 132 may have a slightly conical or tapered shape itself, gradually narrowing from its opening to its base. This design can help guide the tapered section 128 into place and provide a more secure fit.

[0048] The dimensions and shape of the cavity 132 are critical to the proper functioning of the arrester. The cavity 132 must be deep enough to accommodate the full length of the tapered section 128 when the cam plate 120 is in the locked position. At the same time, it should not be so deep as to prevent easy disengagement when the cam plate 120 is moved to the unlocked position. The width of the cavity 132 at its opening should be slightly larger than thewidest part of the tapered section 128 to allow for smooth insertion and removal of the cam plate 120.

[0049] In alternative embodiments, the cavity 132 may incorporate additional features to enhance the locking mechanism. For example, the cavity 132 may include grooves or ridges that correspond to similar features on the tapered section 128 of the cam plate 120. These additional features can provide extra resistance against unintended movement or vibration when the arrester is in the locked position. Another variation could involve a slightly elastomeric lining within the cavity 132, which can provide a tighter grip on the tapered section 128 and potentially reduce wear over time.

[0050] The receiver 130 could be designed with various cavity shapes or sizes in alternative embodiments to accommodate different tapered section profiles or to enhance the locking mechanism's strength.

[0051] A bolt holder 150 is securely mounted on the panel 170. In an embodiment herein, the bolt holder 150 is a solid, elongated object, often rectangular and with a pair of apertures to securely accommodate a guide bolt 140 within each aperture. The guide bolts 140 are designed to be inserted through the bolt receiver 123, allowing the cam plate 120 to slide linearly along the guide bolts 140. The guide bolts 140 serve as guides, ensuring that the movement of the cam plate 120 remains linear and constrained. In alternative embodiments, the guide bolts 140 may be replaced with other guiding mechanisms (such as, but not limited to, rails, grooves, and so on) to achieve the same linear movement control.

[0052] A pair of resilient coils 160 is configured around the guide bolts 140 between the bolt holder 150 and the head 122 of the cam plate 120. The resilient coil 160 applies a resistance force on the head 122. This force applied to the head 122 of the cam plate 120 can keep the cam plate 120 in the locked condition. In an embodiment herein, the bolt holder 150 could be integrated directly into the panel 170. In an embodiment herein, the bolt holder 150 could be designed with adjustable positioning to accommodate different cassette sizes or configurations. The resilient coils 160 could be made from various materials or have different spring rates in alternative embodiments to adjust the locking force or to accommodate different operational environments. In an embodiment herein, the resilient coils 160 may be replaced with other types of spring mechanisms to provide the necessary resistance force. In an embodiment herein, the resilient coils 160 may be replaced with hydraulic systems to providethe necessary resistance force. In an embodiment herein, the resilient coils 160 may be replaced with pneumatic systems to provide the necessary resistance force.

[0053] A key 180 (as illustrated in FIGs. 7A,7B, and 7C) comprises a head 182 and a shaft 184. The head 182 of the key 180 can be substantially circular, although its shape can vary based on specific requirements in alternative embodiments. The shaft is securely mounted to the head 182 at an offset from the centre. The offset mounting of the shaft 184 to the head 182 creates a non-circular rotation of the head. This pattern can be used for displacing the cam plate 120 from the locked position to the unlocked position. In alternative embodiments, the key 180 could be designed with different head shapes or shaft configurations to enhance security or to accommodate various locking mechanism designs.

[0054] The operation of the cassette arrester 100 involves the interaction of these components. Initially, the cam plate 120 is in a locked position (as shown in FIG. 8), with the tapered section 128 of the cam plate 120 snugly fit within the cavity 132 of the receiver 130. The head 122 of the cam plate 120 is held in place by the resilient coils 170, wherein the resilient coils 170 apply a resisting force to keep the head 122 of the cam plate 120 locked. The key 180 is not inserted, and the cam plate cannot be moved.

[0055] During the unlocking condition (as shown in FIG. 9), the operator inserts the key 180 into the key insert 112 of the housing 110 to access the cam plate 120. The key 180 is rotated, and the key's offset-mounted shaft 184 creates a non-circular rotation pattern. This rotation transfers motion to the cam plate 120 through the cam opening 126. As the key is rotated, the cam plate moves linearly along the guide bolts 140, overcoming the resistance from the resilient coils 170. The movement of the cam plate 120 causes the tapered section 128 to disengage from the cavity 132 of the receiver 130, unlocking the mechanism. With the tapered section 128 disengaged, the operator can now perform the desired action, such as opening a door or releasing a latch.

[0056] On the operator rotating the key 180 further or in the opposite direction, the cam plate 120 slides back into the locked position. The tapered section of the cam plate 120 reengages with the cavity 132 of the receiver 130, securing the mechanism. The head 122 of the cam plate 120 is again held in place by the resilient coils 170, maintaining the locked position until the next unlocking action. The key 180 can now be retracted back from the arrester 100.

[0057] The cassette arrester 100 design provides a secure locking mechanism for the cassette within a dock of an electrical energy storage device charging and interchange stationand / or a vehicle, preventing any movement that could impede energy transfer or cause damage. By ensuring the stability of the cassette during operation, embodiments herein maximise the reliability and safety of electrical energy storage device interchange technology, thereby enhancing its appeal as a viable option for electric vehicle charging infrastructure.

[0058] The embodiments described herein above have several technical advantages including, but not limited to, the realization of a cassette arrester,- that ensures secure retention of a cassettes within a dock during both charging and operational movement, enhancing safety and stability;- that enables quick and reliable locking and unlocking operations, thereby supporting efficient interchange of electrical energy storage devices;- that minimizes the risk of damage to electrical and fluid connectors by preventing unintended cassette movement;- that offers consistent performance over repeated locking cycles, contributing to longterm durability and operational reliability;- that maintains linear and constrained motion of the locking mechanism, reducing mechanical wear and ensuring precise alignment;- that functions effectively under varying orientations of cassette mounting, such as horizontal, vertical, or inclined configurations;- that accommodates manufacturing variations and tolerances through its self-aligning locking interface;- that facilitates user-friendly manual operation without requiring complex tools or automated systems;- that maintains locking pressure through resilient biasing elements, ensuring secure engagement even in vibrational or mobile environments; and- that can be constructed using a range of robust and wear-resistant materials, allowing adaptation to different performance and cost requirements.

[0059] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and / or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications shouldand are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments and examples, those skilled in the art will recognize that the embodiments and examples disclosed herein can be practised with modification within the scope of the embodiments as described herein.

Claims

STATEMENT OF CLAIMSWe claim:

1. A cassette arrester (100) configured to securely lock a cassette into place within one of a dock of an electrical energy storage device charging and interchange station, and a vehicle, the cassette arrester (100) comprising: a cam plate (120) having a head (122), a body (124), and a tapered section (128); a housing (110) securely mounted on a panel (170), wherein the housing has a body (114) and a pair of arms (116) extending substantially perpendicular from the rear face of the body (114); a receiver (130) provided with a cavity (132), wherein the cavity (132) is complementary to the tapered section (128) of the cam plate (120); a bolt holder (150) securely mounted on the panel (170); a pair of guide bolts (140) configured to be inserted through bolt receivers (123) of the cam plate (120); and a pair of resilient coils (170) configured around the guide bolts (140) between the bolt holder (150) and head (122) of the cam plate (120).

2. The cassette arrester as claimed in claim 1, wherein the cassette arrester (100) is operated with a key (180) comprising a head (182) and a shaft (184), wherein the shaft is securely mounted to the head at an offset from the centre of the head.

3. The cassette arrester as claimed in claim 1, wherein the head (122) of the cam plate (120) is located at the operational top of the cam plate, and the head (122) of the cam plate (120) has extensions on either side of the cam plate (120), wherein the extensions are configured to extend beyond the width of the body (124), and each extension is provided with a bolt receiver (123).

4. The cassette arrester as claimed in claim 1, wherein the body (124) of the cam plate (120) is provided with a cam opening (126), wherein the cam opening (126) is an aperture configured to enable the cam plate (120) to move linearly when operated with the key (180).

5. The cassette arrester as claimed in claim 1, wherein the tapered section (128) is provided at the operational bottom of the cam plate (120) and is configured to have a tapered profile that gradually narrows along its length.

6. The cassette arrester as claimed in claim 1, wherein a plurality of guide rails is provided on the external surface of the body (124) of the cam plate (120) for guidance.

7. The cassette arrester as claimed in claim 4, wherein the inner surface of the arm (116) and the body (114) of the housing (110) integrally define a passage (118), wherein the passage (118) is configured to accommodate the body (124) of the cam plate (120) such that the cam plate (120) can have a linear movement within the passage (118).

8. The cassette arrester as claimed in claim 1, wherein the housing (110) is configured to restrict the head (122) of the cam plate (120) from passing through the passage (118).

9. The cassette arrester as claimed in claim 4, wherein the housing (110) is provided with a key insert (112) configured to allow the key head (182) to pass through it and access the cam opening (126) of the cam plate (120).

10. The cassette arrester as claimed in claim 1, wherein a plurality of guide rails are provided on the internal surface of the body (114) of the housing (110) for guidance.

11. The cassette arrester as claimed in claim 1, wherein the cavity (132) of the receiver (130) is complementary to the tapered section (128) of the cam plate (120).

12. The cassette arrester as claimed in claim 1, wherein the guide bolts (140) are configured to serve as guides, ensuring that the movement of the cam plate (120) remains linear and constrained, wherein the bolt holder (150) is a solid elongated object having a pair of apertures to securely accommodate the guide bolts (140) within each aperture.

13. The cassette arrester as claimed in claim 1, wherein the resilient coils (170) are configured to apply a resistance force on the head (122) of the cam plate (120).

14. The cassette arrester as claimed in claim 1, wherein the head (182) of the key (180) is substantially circular.

15. The cassette arrester as claimed in claim 1, wherein the offset mounting of the shaft (184) to the head (182) of the key (180) creates a non-circular rotation of the head, resulting in an non-circular rotation pattern, wherein the non-circular rotation pattern is required to displace the cam plate (120) from a lock position to an unlock position.

16. The cassette arrester as claimed in claim 1, wherein in a locked position, the tapered section (128) of the cam plate (120) is in a snug fit with the cavity (132) of the receiver (130); and in an unlocked position, the tapered section (128) of the cam plate (120) is disengaged from the cavity (132) of the receiver (130).

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