A polymer spring has a hollow tubular polymer body, wherein the first end portion of the body, the second end portion of the body, and the mid-portion of the body together substantially maintain an annular cylindrical column structure throughout the length of the body from the first end portion of the body to the second …

Legal parties

Inventors (applicants): Michael James Schmidt, Manuel Tavares
Assignees (initial): Pennsy Corporation (West Chester, US)
Agents: Harding, Earley, Follmer & Frailey, P.C. (attorney), Frank J. Bonini, Jr. (attorney), John F. A. Earley, III (attorney)

The application was examined by Pamela Rodriguez (USPTO dept. 3657)


  • 1. A spring, comprising …
  • 2. The spring of claim 1 , …
  • 3. The spring of claim 2 , …

Cited documents


  • Rix US 3402924 A / 267/141, Sep. 1, 1968
  • Heron US 6220585 B1 / 267/153, Apr. 1, 2001
  • Rix US 3409284 A / 267/153, Nov. 1, 1968
  • Aveni US 7458172 B2 / 36/27, Dec. 1, 2008
  • Chalmers US 4053148 A / 267/201, Oct. 1, 1977
  • Anderson US 5868384 A / 267/141.1, Feb. 1, 1999
  • Anderson US 4566678 A / 267/141.1, Jan. 1, 1986

Brief Description of the Drawings

FIG. 1 is a perspective view of a prior art straight cylinder polymer spring 11; FIG. 2 is a top plan view of the straight cylinder polymer spring 11 shown …


Background of the Invention

1. Field of the Invention This invention relates to springs, and more particularly concerns polymer springs. 2. Description of the Prior Art Polymer springs are used for a wide variety …

Cross Reference to Related Applications

The benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application Ser. No. 61/279,635 filed on Oct. 23, 2009 is hereby claimed, and U.S. Provisional Patent Application Ser. No. 61/279,635 …

Detailed Description

Turning to the drawings, there is shown in FIGS. 11 to 19 b various preferred embodiments of the inventive polymer spring 41. The polymer spring 41 has a hollow tubular …

More details about Polymer Spring

Miscellaneous patent data

The application number is 12/925,462 (U.S.), the invention is named Polymer Spring, similar documents are classified under Plural coils, made of plastics, e.g. fibre reinforced plastics, the steel spring being in contact with the rubber spring, e.g. being embedded in it, Strap forms friction element, Fibrous pad, specially adapted for units of the bushing type, Attachments or mountings, Helical torsion coil, Mechanical spring and nonresilient retarder, in a chamber with a flexible wall, explained by 44 figures, the term of the patent was extended by 254 days, the inventor's address - Doylestown, PA, the known inventor's name is Manuel Tavares, assigned to a United States company, the applicant's state - PA, city - Doylestown, the recorded applicant's name is Manuel Tavares, the grant number is 08590869 (publication number), the examination was conducted by Pamela Rodriguez, the main examiner (3657 USPTO department), the claim 1 is exemplary as chosen by the examiner, the agent - Harding, Earley, Follmer & Frailey, P.C., illustrated by 23 drawings, claims 1-17 comprise the invention scope, the exemplary patent drawings are Top plan view of the straight, view in perspective of the cylinder, Perspective view of a prior, Polymer Spring, invented by Michael James Schmidt et al., the assignee company is Pennsy Corporation located in West Chester (US), categorized under Rubber as a primary classification, the grant date is Nov. 26, 2013 (publication date), the application publication date is Oct. 21, 2010.

Invention classification information

The invention is classified under Elastomeric, made of plastics, e.g. rubber, made of material having high internal friction, Rubber, Rubber. The designated search classifications include Elastomeric, Plural resilient elements with rigid spacer, Rubber type and fluid pressure, Rubber, Rubber.

Patent details
Publication number 08590869
Publication date Nov. 26, 2013
Kind code B2
Application number 12/925,462
Application date Oct. 21, 2010
Application type U
Application series code 12
Extension term 254
National classification 267/153
Total number of claims 17
Exemplary claims 1
Number of drawings 23
Number of figures 44
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