US4148114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High grip paper clip
Assignee: Individual
•
Filing: 1978-09-08
•
Granted: 1979-04-10
•
Expires: 1998-09-08
Abstract
Abstract A paper clip incorporating metal wire inner and outer loops for strength is encapsulated by a resilient material to increase gripping power. In cross section the encapsulation is generally triangular, forming a gripping face and two ramp faces. The ramp faces reduce the likelihood that extra papers will be inadvertently picked up by the clip.
Inventors
- 👤 John P. Wier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:22
CPC Classifications
B; B42; B42F; B42F1/00; B42F1/02; Y; Y10; Y10T; Y10T24/00; Y10T24/20; Y10T24/202; Y10T24/205; Y10T24/44; Y10T24/44641; Y10T24/44932; Y10T24/44949
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A paper clip having a first clamping loop and a second clamping loop, each clamping loop comprising an elongated member formed to define first and second opposed clamping planes, wherein the improvement comprises: a resilient material secured around said elongated member along at least a portion of each of said clamping loops, said resilient material having a cross-sectional configuration including a generally flat gripping face, said gripping face being parallel to the clamping plane of the respective clamping loop, said cross-sectional configuration further including ramp faces sloping away from said gripping face and toward said elongated member, and said gripping faces on the first clamping loop being in planar opposition to the gripping face of the second clamping loop.
Claim 2
Dependent Claim
119 words
A paper clip having a first clamping loop and a second clamping loop, each clamping loop comprising an elongated member formed to define first and second opposed clamping planes, wherein the improvement comprises: a resilient material secured around said elongated member along at least a portion of each of said clamping loops, said resilient material having a cross-sectional configuration including a generally flat gripping face, said gripping face being parallel to the clamping plane of the respective clamping loop, said cross-sectional configuration further including ramp faces sloping away from said gripping face and toward said elongated member, and said gripping faces on the first clamping loop being in planar opposition to the gripping face of the second clamping loop.
Claim 3
Dependent Claim
29 words
The paper clip according to claim 1, wherein: said resilient material substantially completely encapsulates said elongated member over at least a portion of the length of said elongated member.
Claim 4
Dependent Claim
60 words
The paper clip according to claim 1, wherein the elongated member is a wire with a round cross section formed into inner and outer loops and wherein the improvement further comprises: said ramp faces sloping away from said gripping face and being joined by a rounded crowned surface bridging said ramp faces and conforming to the surface of said wire.
Claim 5
Dependent Claim
14 words
The paper clip of claim 1, wherein: said resilient material comprises a rubber composition.
Claim 6
Dependent Claim
28 words
The paper clip according to claim 1, wherein: said resilient material forms a generally triangular cross section having a base/height ratio greater than 2 and less than 5.
Claim 7
Dependent Claim
33 words
The paper clip according to claim 1, wherein the elongated member is metal wire and the improvement further comprises: said resilient material having a higher coefficient of friction than that of the wire.
Claim 8
Dependent Claim
15 words
The paper clip according to claim 6, wherein: said resilient material completely encapsulates said wire.
Claim 9
Dependent Claim
23 words
The paper clip according to claim 3, wherein: the ends of said wire and the associated resilient material taper in a ramp terminus.
References Cited (Backward Citations)
US3913181A
Cited
US4055874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |