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US4964419A Expired / Lapsed US ⏱️ 0.0 years remaining

Keyless handcuffs

Assignee: Individual
•
Filing: 1989-08-02
•
Granted: 1990-10-23
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Expires: 2009-08-02
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Abstract

Abstract A pair of handcuffs formed of light weight plastic material, so that the handcuffs cannot be used by a prisoner as a striking weapon against a guard or police officer. A single flexible plastic cord is formed into two loop sections adapted to encircle the prisoner's wrists. Sections of the cord extend through a clamp device that can be manually operated to expand or contract the loop sections, as necessary to remove or install the handcuffs on the prisoner.

Inventors

  • 👤 Roy L. Karriker

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 12:01
CPC Classifications
E; E05; E05B; E05B75/00; F; F16; F16G; F16G11/00; F16G11/10; F16G11/101; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/402; Y10T70/404

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 294 words
A pair of keyless handcuffs comprising a single flexible cord that includes a single loop connector section (16) at an intermediate point along the cord length, a first wrist-encircling loop section (14) extending away from one end of said connector section and then back toward said connector section, a first clampable section (28) extending from said first loop section in side surface contact with the connector section, and a first end section (30) extending from said first clampable section; said flexible cord further including a second wrist-encircling loop section (12) extending away from the other end of said connector section and then back toward said connector section, a second clampable section (22) extending from said second loop section in side surface contact with said connector section (16), and a second end section (24) extending from said second clampable section; the first clampable section (28) and the second clampable section (22) extending in opposite directions from their respective loop sections (14) and (12); said keyless handcuffs further comprising a manually openable clamp device that includes a hollow housing having two aligned cord openings (36 and 37) formed therein, a manually-movable cord crimping mechanism within said housing, said crimping mechanism being movable between a cord-disengaged position in which it forms a single straight passage between the aligned openings and a cord-crimping position in which it forms a single U-shaped passage between the aligned openings, and a spring within the housing normally biasing the crimping mechanism to its cord-crimping position except when the mechanism is manually moved to its cord-disengaged position; said flexible cord being oriented to said clamp device so that said loop connector cord section (16) and the two clampable cord sections (28 and 22) extend together through the crimping mechanism passage and aligned openings.
Claim 2
Dependent Claim 294 words
A pair of keyless handcuffs comprising a single flexible cord that includes a single loop connector section (16) at an intermediate point along the cord length, a first wrist-encircling loop section (14) extending away from one end of said connector section and then back toward said connector section, a first clampable section (28) extending from said first loop section in side surface contact with the connector section, and a first end section (30) extending from said first clampable section; said flexible cord further including a second wrist-encircling loop section (12) extending away from the other end of said connector section and then back toward said connector section, a second clampable section (22) extending from said second loop section in side surface contact with said connector section (16), and a second end section (24) extending from said second clampable section; the first clampable section (28) and the second clampable section (22) extending in opposite directions from their respective loop sections (14) and (12); said keyless handcuffs further comprising a manually openable clamp device that includes a hollow housing having two aligned cord openings (36 and 37) formed therein, a manually-movable cord crimping mechanism within said housing, said crimping mechanism being movable between a cord-disengaged position in which it forms a single straight passage between the aligned openings and a cord-crimping position in which it forms a single U-shaped passage between the aligned openings, and a spring within the housing normally biasing the crimping mechanism to its cord-crimping position except when the mechanism is manually moved to its cord-disengaged position; said flexible cord being oriented to said clamp device so that said loop connector cord section (16) and the two clampable cord sections (28 and 22) extend together through the crimping mechanism passage and aligned openings.
Claim 3
Dependent Claim 21 words
The handcuffs of claim 1, wherein said cord end sections (30 and 24) are knotted after passage through the clamp device.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-10-22 1994-04-23 1994-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-10-22 1998-04-23 1998-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-10-22 2002-04-23 2002-10-23 $7700.00 Window Closed / Lapsed

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