US4120216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can opener for use with ring-type opener tabs
Assignee: Individual
•
Filing: 1977-08-24
•
Granted: 1978-10-17
•
Expires: 1997-08-24
Abstract
Abstract Provided herein is an opener for use with ring-type can opening tabs. The opener includes a ring insertion head spaced from an elongated handle by an extension member. The insertion head comprises a pair of ring gripping ears symmetrically positioned about a common longitudinal centerline on which the extension member and insertion head lie. The extension member is tapered inwardly from the handle-extension interface to the head-extension interface, and the head is tapered inwardly from the head-extension interface to a blunt tip formed at the distal head end. The underside of the head is curved upwardly from a point between the ring gripping ears and the tip to the tip, while the ears are tapered upwardly from their underside. The head, because of the curved and tapered ears and tip, is easily slid beneath the tab ring and the ears maneuvered to grip that ring. Upward and forward pressure on the handle is multiplied over the length of the extension member to produce a lever-like mechanical advantage effortlessly opening the can.
Inventors
- 👤 Norton Robert Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:13
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/40; B67B7/403
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
An opener for use with ring-type can opening tabs comprising: an elongated handle; head-insertion means sized and shaped for insertion into the ring of a pull-tab can, the head insertion means having force transmitting fulcrum means sized and shaped for insertion into the ring of a pull-tab can along with the head-insertion means; extension means connecting the head-insertion means to the handle thereby forming extension-handle and extension-head interfaces; and the head-insertion means including: (a) tip means at the end thereof opposite the extension-head interface; and (b) means for gripping the pull-tab can ring adjacent the extension-head interface whereby the head-insertion means may be inserted in one direction in a gripping position within the ring of a pull-tab can and the can may be easily opened by exerting an upward and forward force in the other direction on the handle.
Claim 2
Dependent Claim
139 words
An opener for use with ring-type can opening tabs comprising: an elongated handle; head-insertion means sized and shaped for insertion into the ring of a pull-tab can, the head insertion means having force transmitting fulcrum means sized and shaped for insertion into the ring of a pull-tab can along with the head-insertion means; extension means connecting the head-insertion means to the handle thereby forming extension-handle and extension-head interfaces; and the head-insertion means including: (a) tip means at the end thereof opposite the extension-head interface; and (b) means for gripping the pull-tab can ring adjacent the extension-head interface whereby the head-insertion means may be inserted in one direction in a gripping position within the ring of a pull-tab can and the can may be easily opened by exerting an upward and forward force in the other direction on the handle.
Claim 3
Dependent Claim
195 words
An opener for use with ring-type can opening tabs comprising: an elongated handle; head-insertion means sized and shaped for insertion into the ring of a pull-tab can; extension means connecting the head-insertion means to the handle thereby forming extension-handle and extension-head interfaces; the head-insertion means including: (a) tip means at the end thereof opposite the extension-head interface; and (b) means for gripping the pull-tab can ring adjacent the extension-head interface; the extension means and the head-insertion means having a common longitudinal centerline; the extension means tapering inwardly from the extension-handle interface to the extension-head interface; the head-insertion means (a) tapering inwardly from the extension-head interface to the tip means; and (b) curving upwardly from a point between the ring gripping means and the tip means to the tip means; and the ring gripping means comprising a pair of rearwardly extending ring gripping ears, the ears symmetrically disposed on opposite sides of the centerline, whereby the head-insertion means may be inserted in one direction in a gripping position within the ring of a pull-tab can and the can may be easily opened by exerting an upward and forward force in the other direction on the handle.
Claim 4
Dependent Claim
195 words
An opener for use with ring-type can opening tabs comprising: an elongated handle; head-insertion means sized and shaped for insertion into the ring of a pull-tab can; extension means connecting the head-insertion means to the handle thereby forming extension-handle and extension-head interfaces; the head-insertion means including: (a) tip means at the end thereof opposite the extension-head interface; and (b) means for gripping the pull-tab can ring adjacent the extension-head interface; the extension means and the head-insertion means having a common longitudinal centerline; the extension means tapering inwardly from the extension-handle interface to the extension-head interface; the head-insertion means (a) tapering inwardly from the extension-head interface to the tip means; and (b) curving upwardly from a point between the ring gripping means and the tip means to the tip means; and the ring gripping means comprising a pair of rearwardly extending ring gripping ears, the ears symmetrically disposed on opposite sides of the centerline, whereby the head-insertion means may be inserted in one direction in a gripping position within the ring of a pull-tab can and the can may be easily opened by exerting an upward and forward force in the other direction on the handle.
Claim 5
Dependent Claim
34 words
The opener of claim 2, wherein the ring gripping ears are flared upwardly from the underside of the head-insertion means, the area on the top surface adjacent the extension-head interface being reduced in thickness.
Claim 6
Dependent Claim
22 words
The opener of claim 3, wherein the handle is cylindrically shaped and the handle, extension means and head-insertion means are integrally molded.
Claim 7
Dependent Claim
23 words
The opener of claim 3, wherein the handle is generally rectangularly shaped and the handle, extension means and head-insertion means are integrally molded.
References Cited (Backward Citations)
US3724297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |