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US4686918A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for making tufted buffing pads of varied density

Assignee: Schlegel Corp
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Filing: 1986-06-10
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Granted: 1987-08-18
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Expires: 2006-06-10
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Abstract

Abstract A method and apparatus is disclosed for making improved tufted buffing pads of varied density across the face surface thereof. The apparatus comprises a tufting machine for placing pile in a spiral or circular pattern on a backing pad to form the buffing pad. The backing pad is held by a rotatable and laterally-movable pad holder which is coupled to a programmable controller. An improved buffing pad of varying density is achieved by coupling a programmable computer to the programmable controller for varying the length of intermittent steps that the pad holder is laterally moved relating to the tufting machine. By proper programming, pile applied to the backing pad is maximized in a selected high-wear area of the buffing pad, and minimized in a selected low-wear area of the buffing pad.

Inventors

  • 👤 William D. Hjalmer
  • 👤 Hutchinson W. Carns

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 23:34
CPC Classifications
D; D05; D05B; D05B21/00; D05B21/007

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 49 words
An improved tufted buffing pad comprising: a backing pad; and spiral or circular rows of pile secured to said backing pad in which the radially-extending distance between selected rows of pile is decreased to provide a selected high-wear area of the pad, and the radially-extending distance between other selected
Claim 2
Dependent Claim 49 words
An improved tufted buffing pad comprising: a backing pad; and spiral or circular rows of pile secured to said backing pad in which the radially-extending distance between selected rows of pile is decreased to provide a selected high-wear area of the pad, and the radially-extending distance between other selected
Claim 3
Dependent Claim 28 words
A tufted buffing pad according to claim 1 wherein the backing pad is formed from any suitable fabric material, and said pile is formed from a wool yarn.

References Cited (Backward Citations)

US2662277A Cited
US2871495A Cited
US4074385A Cited
US4271357A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-08-17 1991-02-16 1991-08-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-08-17 1995-02-16 1995-08-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-08-17 1999-02-16 1999-08-18 $7700.00 Window Closed / Lapsed

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