IP Library › Granted Patent US 8,393,654

Granted Patent B2

US 8,393,654 · App. 10/647,967 · Granted Mar 12, 2013

Turn-button with leading helical end portion

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Quick Facts

Patent No.: US 8,393,654
App. No.: 10/647,967
Granted: Mar 12, 2013
Kind: B2

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Abstract

A turn-button for a lockset includes a head portion and a shaft extending from the head portion. The shaft has a leading helical end portion.

Claims (24)

1. A lockset, comprising:

a lock mechanism having an aperture;

an operator; and

a turn-button mounted in said operator during assembly of said lockset, said turn-button including:

a head portion; and

a shaft extending from said head portion, said shaft having a leading helical end portion that engages said aperture of said lock mechanism,

said leading helical end portion having a plurality of leading helical surfaces that taper and twist from a transition line of said shaft toward a tip end of said shaft.

2. The lockset of claim 1 , wherein said plurality of leading helical surfaces smoothly transition between adjacent helical surfaces.

3. The lockset of claim 1 , wherein a number of said plurality of leading helical surfaces is greater than two.

4. A turn-button for a lockset, comprising:

a head portion; and

a shaft extending from said head portion, said shaft having a leading helical end tip,

said leading helical end tip having a plurality of leading helical surfaces that taper and twist from a transition line of said shaft toward a tip end of said shaft.

5. The turn-button of claim 4 , wherein said plurality of leading helical surfaces smoothly transition between adjacent helical surfaces.

6. The turn-button of claim 4 , wherein a number of said plurality of leading helical surfaces is greater than two.

7. A lockset comprising:

a lock mechanism including an actuator having an aperture;

an operator;

a turn-button mounted in said operator, said turn-button including a shaft; and

means for facilitating self-alignment of said shaft of said turn-button with said aperture of said lock mechanism as said shaft of said turn-button is inserted into said aperture of said lock mechanism, said means including a plurality of leading helical surfaces that taper and twist from a transition line of said shaft toward a tip end of said shaft.

8. The lockset of claim 7 , wherein said plurality of leading helical surfaces smoothly transition between adjacent helical surfaces.

9. The lockset of claim 7 , wherein said operator is one of a door knob and a door lever, said shaft of said turn-button extending through said one of said door knob and said door lever to engage said aperture of said lock mechanism.

10. The lockset of claim 7 , wherein said aperture of said lock mechanism has a substantially rectangular shape.

11. The lockset of claim 7 , wherein a number of said plurality of leading helical surfaces is greater than two.

Assignments (11)

RELEASE OF SECURITY INTEREST Recorded Jun 20, 2023

From: ROYAL BANK OF CANADA

To: SPECTRUM BRANDS, INC.

Reel/Frame 064029/0313 →

NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST (INTELLECTUAL PROPERTY) REEL/FRAME 036131/0272 Recorded Jun 5, 2018

From: DEUTSCHE BANK AG NEW YORK BRANCH

To: ROYAL BANK OF CANADA

Reel/Frame 046301/0425 →

MERGER Recorded Jun 22, 2016

From: KWIKSET CORPORATION

To: SPECTRUM BRANDS, INC.

Reel/Frame 039116/0293 →

SECURITY INTEREST Recorded Jul 20, 2015

From: SPECTRUM BRANDS, INC.

To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT

Reel/Frame 036131/0272 →

RELEASE OF SECURITY INTEREST Recorded Jul 14, 2015

From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL TRUSTEE

To: APPLICA CONSUMER PRODUCTS, INC.; APPLICA CONSUMER PRODUCTS, INC., A CORP. OF FLORIDA; KWIKSET CORPORATION; LIQUID HOLDING COMPANY, INC.; NATIONAL MANUFACTURING CO.; PRICE PFISTER, INC.; ROV HOLDING, INC., A CORP. OF DELAWARE; ROVCAL, INC.; ROVCAL, INC., A CORP. OF CALIFORNIA; RUSSELL HOBBS, INC., A CORP. OF DELAWARE; SALIX ANIMAL HEALTH, LLC; SEED RESOURCES, L.L.C.; SPECTRUM BRANDS, INC.; SPECTRUM BRANDS, INC. AS SUCCESSOR IN INTEREST TO ROVCAL, INC.; SPECTRUM BRANDS, INC., A CORP. OF DELAWARE; TELL MANUFACTURING, INC.; TETRA HOLDING (US), INC., A CORP. OF DELAWARE; TETRA HOLDINGS (US), INC.; UNITED INDUSTRIES CORPORATION; UNITED INDUSTRIES CORPORATION AS SUCCESSOR IN INTEREST TO LIQUID HOLDING COMPANY, INC.; UNITED PET GROUP, INC.; UNITED PET GROUP, INC., A CORP. OF DELAWARE

Reel/Frame 036102/0001 →

RELEASE OF SECURITY INTEREST Recorded Jul 2, 2015

From: BANK OF AMERICA, N.A., AS AGENT

To: RUSSELL HOBBS, INC.; APPLICA CONSUMER PRODUCTS, INC.; TOASTMASTER INC.; SPECTRUM BRANDS, INC.; ROVCAL, INC.; TETRA HOLDING (US), INC.; UNITED PET GROUP, INC.; SEED RESOURCES, L.L.C.; PRICE PFISTER, INC.; KWIKSET CORPORATION; NATIONAL MANUFACTURING CO.; LIQUID HOLDING COMPANY, INC.; TELL MANUFACTURING, INC.; SALIX ANIMAL HEALTH, LLC

Reel/Frame 036052/0845 →

SECURITY AGREEMENT Recorded Jan 31, 2013

From: PRICE PFISTER, INC.; KWIKSET CORPORATION; NATIONAL MANUFACTURING CO.

To: BANK OF AMERICA, N.A., AS AGENT

Reel/Frame 029731/0589 →

PATENT SECURITY AGREEMENT Recorded Dec 28, 2012

From: PRICE PFISTER, INC.; KWIKSET CORPORATION; NATIONAL MANUFACTURING CO.

To: WELLS FARGO BANK, NATIONAL ASSOCIATION

Reel/Frame 029538/0186 →

PATENT ASSIGNMENT AGREEMENT Recorded Dec 28, 2012

From: SPECTRUM BRANDS, INC.

To: KWIKSET CORPORATION