Shaving systems

Patent metadata

Field	Value
Publication number	US-11077569-B2
Application number	US-201916698605-A
Country	US
Kind code	B2
Filing date	Nov 27, 2019
Priority date	Sep 27, 2012
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

Shaving assemblies are disclosed that include a blade unit, an interface element configured to connect the blade unit to a handle, on which the blade unit is pivotably mounted, and a return element disposed between the blade unit and interface element. The return element serves as interface piece, connector and pivot all in one. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems.

First claim

What is claimed is:

1. A replaceable shaving assembly comprising:
an interface element including a handle interface element configured to receive a distal hand of a razor handle, an arcuate blade unit interface element having attachment points, and a return element that flexibly joins the handle interface portion and the blade interface portion; and
a blade unit pivotably mounted on the interface element by engagement of the attachment points on the blade interface element with complementary attachment points on the blade unit.

2. The shaving assembly of claim 1 wherein the arcuate blade unit interface element has an apex and distal ends, and the apex is spaced further away from the handle interface portion than the distal ends.

3. The shaving assembly of claim 2 wherein the attachment points on the blade unit interface element are at the distal ends of the blade unit interface element.

4. The shaving assembly of claim 3 wherein the arcuate blade unit interface element comprises one or more protrusion(s) that extend from the apex of the arcuate blade unit interface element toward the blade unit, and the blade unit includes one or more corresponding receiving bore(s) that receive the protrusions.

5. The shaving assembly of claim 4 wherein the protrusion(s) engage the bore(s) to provide a third point of attachment of the blade unit to the blade unit interface element.

6. The shaving assembly of claim 4 wherein the blade unit includes a pivot stop spaced from the receiving bore(s) and positioned to limit the pivoting of the blade unit.

7. The shaving assembly of claim 3 , wherein the attachment points at the distal ends of the blade unit interface element comprise tabs, and the complementary attachment points on the blade unit comprise openings configured to receive the tabs.

8. The shaving assembly of claim 1 wherein the return element comprises one or more pairs of spaced apart rigid portions extending from the blade unit interface element and the handle unit interface element, the rigid portions facing each other in opposed space relation, and one or more flexible elastomeric return portions, each return portion being molded over the opposed ends of the rigid portions, joining the opposed ends and thus flexibly joining the handle interface portion to the blade unit interface portion.

9. The shaving assembly of claim 8 wherein the return element comprises two spaced apart elastomeric members that extend in a direction generally perpendicular to a longitudinal axis of the blade unit, and each of the elastomeric members connects a pair of the spaced apart rigid portions.

10. The shaving assembly of claim 1 , wherein the return element is configured to bias the blade unit towards a rest position with respect to a pivot axis that is generally parallel to a long axis of the blade unit.

11. The shaving assembly of claim 1 , wherein the return element comprises a thermoplastic elastomer or thermoplastic urethane.

12. A shaving system comprising:
a handle having a distal end and a proximal end; and
an interface element interface element including a handle interface element configured to receive the distal end of the razor handle, an arcuate blade unit interface element having attachment points, and a return element that flexibly joins the handle interface portion and the blade interface element; and
a blade unit pivotably mounted on the interface element by engagement of the attachment points on the blade interface element with complementary attachment points on the blade unit.

13. The shaving system of claim 12 wherein the arcuate blade unit interface element has an apex and distal ends, and the apex is spaced further away from the handle interface portion than the distal ends.

14. The shaving system of claim 13 wherein the attachment points are at the distal ends of the blade unit interface element.

15. The shaving system of claim 14 wherein the arcuate blade unit interface element comprises one or more protrusion(s) that extend from the apex of the arcuate blade unit interface element toward the blade unit, and the blade unit includes one or more corresponding receiving bore(s) that receive the protrusions.

16. The shaving system of claim 15 wherein the protrusion(s) engage the bore(s) to provide a third point of attachment of the blade unit to the blade unit interface element.

17. The shaving system of claim 15 wherein the blade unit includes a pivot stop spaced from the receiving bore(s) and positioned to limit the pivoting of the blade unit.

18. The shaving system of claim 14 , wherein the attachment points at the distal ends of the blade unit interface element comprise tabs, and the complementary attachment points on the blade unit comprise receiving bores.

19. The shaving system of claim 12 wherein the return element comprises one or more pairs of spaced apart rigid portions extending from the blade unit interface element and the handle unit interface element, the rigid portions facing each other in opposed space relation, and one or more flexible elastomeric return portions, each return portion being molded over the opposed ends of the rigid portions, joining the opposed ends and thus flexibly joining the handle interface portion to the blade unit interface portion.

20. The shaving system of claim 19 wherein the return element comprises two spaced apart elastomeric members that extend in a direction generally perpendicular to a longitudinal axis of the blade unit, and each of the elastomeric members connects a pair of the spaced apart rigid portions.

21. The shaving system of claim 12 , wherein the return element is configured to bias the blade unit towards a rest position with respect to a pivot axis that is generally parallel to a long axis of the blade unit.

22. The shaving system of claim 12 , wherein the return element comprises a thermoplastic elastomer or thermoplastic urethane.

23. A method of shaving comprising contacting the skin with the blade unit of a shaving system comprising a handle having a distal end and a proximal end, and a replaceable shaving assembly that includes (a) an interface element interface element including a handle interface element configured to receive a distal hand of a razor handle, an arcuate blade unit interface element having attachment points, and a return element that flexibly joins the handle interface portion and the blade interface portion; and (b) a blade unit pivotably mounted on the interface element by engagement of the attachment points on the blade interface element with complementary attachment points on the blade unit.

Assignees

• Shavelogic Inc

Inventors

• Provost Craig A
• Tucker William E
• Griffin John W

Classifications

• B26B21/4081

  Shaving methods; Usage or wear indication; Testing methods · CPC title

• B26B21/521 Primary

  Connection details, e.g. connection to razor heads · CPC title

• B26B21/225

  the changeable unit being resiliently mounted on the handle · CPC title

• Y10T83/04

  Processes · CPC title

• B26B21/14 Primary

  Safety razors with one or more blades arranged transversely to the handle · CPC title