US3812994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof closure cap
Assignee: ITNOC DAIRY CAP CO Inc
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Filing: 1972-05-18
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Granted: 1974-05-28
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Expires: 1992-05-18
Abstract
Abstract A closure cap for the neck of a bottle or other container, includes a cap body having internal thread means designed to engage external threads on the neck, and a ratchet ring connected to the body by means of a shoulder. A continuous tear line formed at the junction of the body and the shoulder is provided for separating the body and ring, the shoulder and ring being adapted to pivot on the tear line which serves as a hinge to allow the ring to pivot slightly away from the bottle neck while seating the closure on said neck.
Inventors
- 👤 J Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:21
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0407; B65D41/0414; B65D41/0421; B65D41/32; B65D41/34; B65D41/3404; B65D2401/00; B65D2401/15; B65D2401/25
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
211 words
A closure cap for a container comprising: a. a cap body having internal threads adapted to cooperate with corresponding threads on the container; b. a tamper-proof ring severably connected to the body and having internal projections adapted to cooperate with external projections on the container for preventing unthreading motion of the ring on the container, said ring having a shoulder extending radially outwardly from the lower end of the body and a wall depending downwardly from the outer periphery of the shoulder; and c. connecting membrane means connecting the ring to the body, said membrane means extending continuously around said body and being located immediately radially outwardly of the periphery of said body, said membrane further being of reduced thickness relative to the thickness of said body and ring to provide a flex line about which said ring can flex outwardly relative to said body, without tearing the membrane, upon threading of the cap onto the container and movement of the projections of the ring over the projections on the container, and said membrane being defined solely by a groove formed in the underneath surface of the shoulder and in the radially aligned portion of the body so as to be hidden from view when the closure is on the container.
Claim 2
Dependent Claim
211 words
A closure cap for a container comprising: a. a cap body having internal threads adapted to cooperate with corresponding threads on the container; b. a tamper-proof ring severably connected to the body and having internal projections adapted to cooperate with external projections on the container for preventing unthreading motion of the ring on the container, said ring having a shoulder extending radially outwardly from the lower end of the body and a wall depending downwardly from the outer periphery of the shoulder; and c. connecting membrane means connecting the ring to the body, said membrane means extending continuously around said body and being located immediately radially outwardly of the periphery of said body, said membrane further being of reduced thickness relative to the thickness of said body and ring to provide a flex line about which said ring can flex outwardly relative to said body, without tearing the membrane, upon threading of the cap onto the container and movement of the projections of the ring over the projections on the container, and said membrane being defined solely by a groove formed in the underneath surface of the shoulder and in the radially aligned portion of the body so as to be hidden from view when the closure is on the container.
Claim 3
Dependent Claim
40 words
A closure cap as defined in claim 1 wherein: a. there is provided within said cap body a sealing ring adapted to engage an inner surface of the container opening; and b. radially oriented support ribs for said seal ring.
Claim 4
Dependent Claim
42 words
A closure cap as defined in claim 2 wherein: a. there is disposed an annular bead within the cap body between the outer wall thereof and the sealing ring, whereby there is provided additional seal on seating the cap on said container.
Claim 5
Dependent Claim
150 words
A closure cap for a container comprising: a. a cap body having internal threads adapted to cooperate with corresponding threads on the container; b. a tamper-proof ring severably connected to the cap body and having internal projections adapted to cooperate with external projections on the container for preventing unthreading motion of the ring on the container; c. connecting membrane means connecting the ring to the cap body, said membrane having a strength preventing severance of the ring from the body upon turning of the cap in an unthreading direction, said membrane further defining a weakened, tearable flexing zone permitting flexing of said ring relative to said body and about said zone upon threading of the cap onto the container and movement of the projections of the ring over the projections on the container; and d. grasping means connected to said ring for tearing it from said body along said zone.
Claim 6
Dependent Claim
150 words
A closure cap for a container comprising: a. a cap body having internal threads adapted to cooperate with corresponding threads on the container; b. a tamper-proof ring severably connected to the cap body and having internal projections adapted to cooperate with external projections on the container for preventing unthreading motion of the ring on the container; c. connecting membrane means connecting the ring to the cap body, said membrane having a strength preventing severance of the ring from the body upon turning of the cap in an unthreading direction, said membrane further defining a weakened, tearable flexing zone permitting flexing of said ring relative to said body and about said zone upon threading of the cap onto the container and movement of the projections of the ring over the projections on the container; and d. grasping means connected to said ring for tearing it from said body along said zone.
Claim 7
Dependent Claim
34 words
A closure cap as defined in claim 4 wherein: a. said connecting membrane means extends continuously around the cap body and is of reduced thickness relative to the thickness of said body and ring.
Claim 8
Dependent Claim
50 words
A closure cap as defined in claim 5 wherein: a. said ring includes a shoulder extending radially outwardly from the lower end of said body and a wall extending downwardly from the outer periphery of the shoulder; and b. said membrane means is located immediately radially outwardly of said body.
Claim 9
Dependent Claim
55 words
A closure cap as defined in claim 6 wherein: a. the body, ring and membrane means is an integral molded construction of flexible plastic material; b. the thickness of said body and ring is between about 0.04 and 0.05 inch; and c. the thickness of the membrane means is betweEn about 0.001 and 0.010 inch.
Claim 10
Dependent Claim
22 words
A closure cap as defined in claim 7 wherein: a. said plastic material is polyethylene having a density of about 0.940 gm/cc.
Claim 11
Dependent Claim
147 words
A closure arrangement for a container comprising: a. a cap body having internal threads; b. a tamper-proof ring severably connected thereto and having internal ratchet teeth; c. a pivotal shoulder between the cap body and the ring; and d. a tear line located at the junction of said shoulder and said body and formed by a continuous and relatively thin protective membrane along which said shoulder together with said ring is adapted to be severed from said cap body prior to the normal uncapping of said container and additionally serving as a line of flexure for seating said closure on said container, said shoulder being adapted to pivot slightly on said line as the closure is initially seated on the container, and said protective membrane having sufficient strength to prevent severance of the ring from the body upon attempted turning of the closure in an unthreading direction.
Claim 12
Dependent Claim
147 words
A closure arrangement for a container comprising: a. a cap body having internal threads; b. a tamper-proof ring severably connected thereto and having internal ratchet teeth; c. a pivotal shoulder between the cap body and the ring; and d. a tear line located at the junction of said shoulder and said body and formed by a continuous and relatively thin protective membrane along which said shoulder together with said ring is adapted to be severed from said cap body prior to the normal uncapping of said container and additionally serving as a line of flexure for seating said closure on said container, said shoulder being adapted to pivot slightly on said line as the closure is initially seated on the container, and said protective membrane having sufficient strength to prevent severance of the ring from the body upon attempted turning of the closure in an unthreading direction.
Claim 13
Dependent Claim
75 words
A closure arrangement as defined in claim 9 wherein: a. said shoulder extends radially outwardly from the lower end of the body with the ring extending downwardly from the outer periphery of the shoulder; and b. said membrane is defined solely by a groove formed in the underneath surface of the shoulder and in the radially aligned portion of the body so as to be hidden from view when the closure is on the container.
Claim 14
Dependent Claim
22 words
A closure arrangement as defined in claim 10 wherein: a. the wall thickness of the body, shoulder and ring is about equal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |