Scope, Claims, and U.S. Patent Landscape for US 7,540,282
What does US 7,540,282 claim in plain scope terms?
US 7,540,282 claims a mechanically actuated inhaler with three core functional blocks built around a moving “cup assembly” inside a linear channel. The central control logic is alignment-based: when the cup recess aligns with a reservoir dispensing port, one sealing condition applies; when misaligned, a different sealing condition applies that also controls a pressure relief port.
Key architecture recited across the independent and dependent claims
- Sealed reservoir with dispensing port.
- Linear channel connected to the dispensing port and containing a pressure relief port.
- Conduit that provides fluid communication from the reservoir interior to the pressure relief port.
- Movably received cup assembly in the channel with:
- a recess that receives medicament when aligned with the dispensing port,
- a first sealing surface that seals the dispensing port when the recess is not aligned,
- a second sealing surface that seals the pressure relief port when the recess is aligned and that unseals the pressure relief port when the recess is not aligned.
- Actuation that moves the cup assembly between aligned and non-aligned positions, using springs, a yoke with ratchet logic, cams, and in some embodiments a cover that drives the cam.
Commercially relevant implication for scope: claim coverage is dominated by the alignment-and-sealing relationship between the recess, the dispensing port, and the pressure relief port, plus the mechanical system that shifts the cup assembly to repeatedly meter doses.
What is the scope of Claim 1 (the independent claim)?
Claim 1 defines the minimum claim “shape” for coverage. Any product that practices these elements in combination faces direct infringement risk.
Claim 1 element map (coverage-critical features)
- Inhaler
- Sealed reservoir with a dispensing port
- Linear channel communicating with the dispensing port and including a pressure relief port
- Conduit connecting reservoir interior to the pressure relief port (fluid communication)
- Cup assembly movably received in the linear channel with:
- Recess to receive medicament from the reservoir when the recess is aligned with the dispensing port
- First sealing surface sealing the dispensing port when the recess is not aligned
- Second sealing surface:
- seals the pressure relief port when the recess is aligned
- unseals the pressure relief port when the recess is not aligned
Functional control logic embedded in the claim
- When the cup recess is aligned with the dispensing port:
- medicament reception is enabled,
- dispensing port is not sealed by the first sealing surface,
- pressure relief port is sealed by the second sealing surface.
- When the cup recess is not aligned:
- medicament reception from the reservoir is blocked by sealing the dispensing port,
- pressure relief port is unsealed to relieve pressure in the channel/reservoir interface region.
How do dependent claims narrow or broaden the mechanical implementation?
Biasing and sealing details
- Claim 2 adds a sealing spring biasing the first sealing surface against the reservoir.
- Coverage expands to devices that include this biasing feature; it does not remove the alignment-and-sealing requirement from Claim 1.
Reservoir pressure generation
- Claim 3 adds a collapsible bellows in the reservoir to increase interior pressure upon collapse when the pressure relief port is sealed.
- Scope centers on whether pressure is built under a sealed pressure relief state, which matches the Claim 1 sealing logic.
Cup and sled mechanical substructure
- Claim 4 specifies the cup assembly as:
- a cup received in a cup sled movable within the channel, where:
- the cup defines the recess and the first sealing surface,
- the sled defines the second sealing surface.
- Claim 5 adds an indentation on the sled positioned to align with and unseal the pressure relief port when the first sealing surface aligns with the dispensing port.
- Claim 6 adds a sealing spring between the cup and the cup sled, biasing the cup’s first sealing surface against the reservoir.
Scope impact: these claims constrain the internal mechanical architecture to a cup-on-sled concept and tie unsealing to an indentation feature.
Directional motion and opposing travel
- Claim 7 states the channel is linear and the cup assembly moves in opposing directions within the channel.
- This reads like a specific actuation path constraint.
Yoke, ratchet, and “dose cycle” locking/unlocking
- Claim 8 introduces:
- a cup spring biasing cup assembly along the channel,
- a yoke movable between positions with a ratchet that:
- prevents movement in one position,
- allows movement in another position.
- Claim 9 adds that the cup spring biases the cup assembly to a position where the recess is not aligned with the dispensing port.
- Claim 10 adds a push bar on the yoke that aligns the recess with the dispensing port when the yoke is in a selected position.
Scope impact: this portion is a clear mechanized dose indexing scheme where the yoke controls whether the cup assembly is locked or released, setting the alignment state.
Cam-driven multi-position indexing
- Claim 11 adds:
- at least one movable cam with at least two successive cam surfaces,
- a spring biasing the yoke against the cam so movement of the cam causes the yoke to successively engage cam surfaces and move yoke between positions.
- Claim 12 specifies:
- three successive cam surfaces for three positions,
- ratchet holds the recess not aligned with the dispensing port when yoke is in first and second positions,
- ratchet allows movement when yoke is in third position.
- Claim 13 adds coupling to the bellows:
- collapses the bellows when yoke is in first and second positions.
Scope impact: this is a timing claim. It requires a particular sequence: bellows collapse while the recess is held in a non-dispensing aligned state, then release at a later cam/yoke position.
Mouthpiece cover linkage
- Claim 14 adds:
- a mouthpiece
- a cover movable to open and close the mouthpiece,
- the cam is secured to the cover such that opening/closing moves the yoke.
- Claim 15 specifies the cam is movable by rotation.
Scope impact: Claim 14 and 15 tie mechanical actuation to a cover motion (a common consumer interface), narrowing infringement to products where the cover drives the indexing mechanism.
Dry powder medicament
- Claim 16 limits reservoir content to a “volume of dry powdered medicament.”
- This narrows claim coverage to dry powder systems, which is typically where cup-and-recess metering designs are used.
Dose counter mechanism
- Claim 17 is the most mechanically detailed downstream subsystem claim, requiring:
- a pawl movable along a predetermined path upon movement of the recess from the dispensing port,
- a dose counter with:
- bobbin and rotatable spool,
- rolled ribbon received on bobbin, rotatable about the bobbin axis,
- ribbon indicia successively extend between secured end and a second end positioned on bobbin,
- teeth extending radially outwardly from the spool into the pawl path so that pawl rotation drives spool rotation and advances ribbon as medicament is metered.
Scope impact: strict structural match. If a product uses a different dose counter modality (e.g., LCD-based counting, mechanical counter with a different geartrain), Claim 17 is harder to hit; but Claims 1-16 can still apply absent the counter elements.
What is the claim “core” that most likely defines infringement risk?
Across Claims 1-16, infringement analysis will usually converge on these features:
- Movable cup assembly inside a linear channel
- Alignment-based sealing of:
- dispensing port sealed by a first sealing surface when recess is not aligned
- pressure relief port sealed/unsealed by a second sealing surface depending on alignment
- Pressure relief port tied by a conduit to the reservoir interior
- Mechanism that repeatedly moves the cup assembly between aligned and non-aligned states via yoke/ratchet/cam and optionally cover motion
- Dry powder medicament limitation in Claim 16 (but not in Claim 1)
Patent landscape: what other patents does US 7,540,282 most likely sit next to?
The provided prompt includes only the claim text and does not include bibliographic identifiers (assignee, filing date, publication family, IPC/CPC class, or title). Without those identifiers, it is not possible to produce a complete, accurate U.S. landscape map with priority chains, family members, or citation networks for US 7,540,282.
Therefore, no patent landscape with specific citing/cited U.S. patents, family members, or status comparisons can be generated from the supplied material alone.
Practical scope boundaries (design-around and non-infringing directions)
Given Claim 1’s structural language, the primary design-around pressure points are:
- Break the “alignment determines sealing of both ports” relationship
- If the second sealing surface does not seal/unseal the pressure relief port based on recess alignment, Claim 1’s sealing logic is not met.
- Remove the pressure relief port unsealing function in the same alignment state
- Claim 1 requires the pressure relief port to be sealed when recess aligns and unsealed when recess misaligns.
- Use a non-linear channel architecture
- Claim 1 requires a “linear channel.”
- Avoid cup-on-channel with recess and dual sealing surfaces
- Claim 1 requires a cup assembly with recess plus first and second sealing surfaces and their alignment-dependent behavior.
Claim coverage by feature set (quick cross-claim view)
| Feature block |
Claim(s) that require it |
Coverage relevance |
| Sealed reservoir + dispensing port |
1 |
Baseline requirement |
| Linear channel + pressure relief port |
1 |
Baseline requirement |
| Conduit connecting reservoir interior to pressure relief port |
1 |
Baseline requirement |
| Cup assembly with recess aligned to receive medicament |
1 |
Baseline requirement |
| First sealing surface: seals dispensing port when recess not aligned |
1 |
Baseline requirement |
| Second sealing surface: seals pressure relief when aligned, unseals when not aligned |
1 |
Baseline requirement |
| Sealing spring biasing first sealing surface |
2, 6 |
Implementation-specific narrowings |
| Collapsible bellows increasing pressure upon collapse when pressure relief port sealed |
3, 13 |
Timing/pressure feature |
| Cup-on-cup-sled with cup defines recess + first seal, sled defines second seal |
4 |
Mechanical architecture narrowing |
| Indentation on sled for pressure relief unsealing |
5 |
Structural narrowing |
| Cup spring + yoke + ratchet lock/unlock |
8-12 |
Actuation sequencing |
| Push bar aligning recess with dispensing port |
10 |
Interface narrowing |
| Cam with successive cam surfaces and spring-biased yoke engagement |
11-12 |
Sequencing and kinematics |
| Cover that opens/closes mouthpiece and carries cam |
14 |
Consumer interface linkage |
| Cam moved by rotation |
15 |
Kinematic narrowing |
| Dry powdered medicament limitation |
16 |
Narrowing to dry powder |
| Dose counter with bobbin/spool/rolled ribbon and pawl-driven advancement |
17 |
Downstream device-specific narrowing |
Key Takeaways
- US 7,540,282’s claim scope is built around a cup assembly that moves in a linear channel and controls both a dispensing port and a pressure relief port using alignment-dependent sealing/unsealing.
- The most infringement-relevant technical “core” is Claim 1’s dual sealing behavior tied to recess alignment, plus the pressure relief port fluidly connected to the reservoir interior via a conduit.
- Dependent claims progressively constrain the mechanism with springs, bellows, a cup-sled architecture, yoke/ratchet locking, cam-driven multi-position sequencing, and a cover-driven actuation path.
- Claim 17 is a highly specific mechanical dose counter structure; if a product’s counting system differs, Claim 17 is less likely to apply, while Claims 1-16 could still be implicated.
FAQs
1) What is the single most claim-critical relationship in US 7,540,282?
Alignment of the cup recess with the dispensing port must correspond to sealing of the pressure relief port by the second sealing surface, and when the recess is not aligned, the dispensing port must be sealed and the pressure relief port must be unsealed.
2) Does the claim cover only dry powder inhalers?
Not by Claim 1. Dry powder is required in dependent Claim 16, but Claim 1 itself does not include that limitation.
3) Is the pressure relief port required to be “unsealed” when the recess is misaligned?
Yes. Claim 1 requires the second sealing surface to unseal the pressure relief port when the recess is not aligned with the dispensing port.
4) How specific is the cam and yoke timing?
Claims 11-13 and 12 are specific: a movable cam with successive cam surfaces moves the yoke; the ratchet locks/unlocks movement across multiple yoke positions, and in Claim 13 the yoke collapses the bellows in the first and second positions.
5) Does the dose counter need to match Claim 17 for infringement?
Not for infringement of Claim 1. Claim 17 is an additional dependent limitation. A product could avoid Claim 17 yet still fall within the independent claim scope if it meets Claim 1’s core sealing and alignment structure.
References
[No sources provided in the prompt.]
