US3900922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable ties
Assignee: Bowthorpe Hellerman Ltd
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Filing: 1974-08-30
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Granted: 1975-08-26
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Expires: 1994-08-30
Abstract
Abstract A one-piece tie of plastics material for tying around a bundle of cables and the like comprises a flexible strap having transverse serrations on one side for locking with transverse teeth under the influence of a wedging portion which is formed on the strap between the serrated portion thereof and an apertured head at one end of the strap. Firstly the free end of the strap is drawn completely through the aperture to place the wedge portion within the aperture with a portion of the surface of the strap opposite the wedge portion resting on an inclined surface formed on the end wall of the head adjacent the strap. Then the strap is looped around a bundle and passed back through the head for the strap serrations to ride past the transverse locking teeth, these teeth preventing subsequent withdrawal of the strap and any tension in the strap in the withdrawal direction then serving to draw the wedge portion over the inclined surface to wedge the strap against an opposite end wall of the head. The transverse teeth are provided in one embodiment on the wedge portion and in another embodiment on the opposite end wall of the head, the serrations being provided in each case on the appropriate side of the strap.
Inventors
- 👤 Matthew Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:49
CPC Classifications
B; B65; B65D; B65D63/00; B65D63/10; B65D63/1018; B65D63/1027; B65D63/1063; B65D63/1072; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
355 words
A one-piece tie of plastics material comprising a flexible elongate strap, a head at one end of the strap formed with an aperture extending therethrough for receiving the other end of the strap, an inclined surface formed within said aperture on an end wall of said head which is adjacent a junction of said strap and said head, said inclined surface being adjacent one end of said aperture and inclining away from an opposite end wall of said head towards said one end of said aperture, a series of transverse ratchet serrations formed on said strap on one side thereof, a wedge portion formed on the side of said strap which faces said other end of said aperture and disposed between said Head and the portion of said strap having said series of serrations, said wedge portion being arranged so that threading said other end of the strap through said aperture from said one end thereof places said wedge portion in said aperture with a portion of the surface of the side of said strap opposite said wedge portion resting upon said inclined surface and with an opposite surface of the wedge portion facing said opposite end wall of the head, there being provided at least one transverse tooth profiled complementarily to the serrations and arranged to enable the strap to be looped subsequently and passed back through said aperture from said other end thereof with the strap serrations running past said tooth, whereafter engagement between said tooth and serrations prevents the strap being drawn over said tooth in the opposite direction and any tension applied to said strap in said opposite direction serves to draw the wedge portion in said opposite direction over the inclined surface to more firmly grip the strap against said opposite end wall of the head, and a transverse abutment formed on each said inclined surface in said aperture and said portion of the surface of said side of said strap opposite said wedge portion to engage to limit slippage of the wedge portion over said inclined surface as increasing tension is applied to said strap in said opposite direction.
Claim 2
Dependent Claim
355 words
A one-piece tie of plastics material comprising a flexible elongate strap, a head at one end of the strap formed with an aperture extending therethrough for receiving the other end of the strap, an inclined surface formed within said aperture on an end wall of said head which is adjacent a junction of said strap and said head, said inclined surface being adjacent one end of said aperture and inclining away from an opposite end wall of said head towards said one end of said aperture, a series of transverse ratchet serrations formed on said strap on one side thereof, a wedge portion formed on the side of said strap which faces said other end of said aperture and disposed between said Head and the portion of said strap having said series of serrations, said wedge portion being arranged so that threading said other end of the strap through said aperture from said one end thereof places said wedge portion in said aperture with a portion of the surface of the side of said strap opposite said wedge portion resting upon said inclined surface and with an opposite surface of the wedge portion facing said opposite end wall of the head, there being provided at least one transverse tooth profiled complementarily to the serrations and arranged to enable the strap to be looped subsequently and passed back through said aperture from said other end thereof with the strap serrations running past said tooth, whereafter engagement between said tooth and serrations prevents the strap being drawn over said tooth in the opposite direction and any tension applied to said strap in said opposite direction serves to draw the wedge portion in said opposite direction over the inclined surface to more firmly grip the strap against said opposite end wall of the head, and a transverse abutment formed on each said inclined surface in said aperture and said portion of the surface of said side of said strap opposite said wedge portion to engage to limit slippage of the wedge portion over said inclined surface as increasing tension is applied to said strap in said opposite direction.
Claim 3
Dependent Claim
30 words
A one-piece tie as claimed in claim 1, in which said transverse abutments are provided with mutually engaging surfaces which are perpendicular to the aperture when the tie is tied.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |