GATE Pulsar Patents: What They Do and Don't Say About Your Kits
GATE is among the manufacturers that have invested most in putting its HPA technology on paper. In our source folder there are two recent public documents from the house, both published applications (not yet granted patents): PL 449544 A1 from the Polish office UPO, and EP 4 696 975 A1 from the European Patent Office. Both list the same Krakow inventor team — Marcin Menet, Damian Wojtak and Michał Sarota — and share a November 2023 priority. This article reads them for what they are: open technical documentation, highly informative… and widely misread on forums.
Warning up front: neither PL 449544 A1 nor EP 4 696 975 A1 is a granted patent, and none of our kits implements their claimed solutions.
The cards, one by one
PL 449544 A1 — “Zespół pneumatycznego wystrzeliwania pocisków z replik broni strzeleckiej” (pneumatic projectile firing assembly for firearm replicas). Applicant: GATE Enterprise sp. z o.o. s.k., Krakow. Filed August 21, 2024, published February 23, 2026 (BUP 08/2026). Classification F41B 11/00, 11/62, 11/60. National priority PL 44670123 of November 10, 2023. Official record: UPO / Espacenet.
EP 4 696 975 A1 — European application of the same conceptual family, filed August 19, 2024, published February 18, 2026 (Bulletin 2026/08), claiming the same Polish priority. It designates the usual contracting European states. Classification F41B 11/72. Official record: EPO OPS / Espacenet.
A telling detail: the European filing lists the same Polish inventors as the national one. That is standard strategy — cheap home-country priority, extension later — and it lets you track the whole family by searching those names.
The described principle, simply put
The Polish abstract describes a pneumatic firing assembly whose technical problem is achieving a simple construction in which the separation of the firing phase, preceded by sealing the BB in the hop-up rubber of the magazine chamber, is carried out exclusively pneumatically. Translated to workshop language: in many engines the BB is cut against the edge of the air port with a risk of double-bite; the family proposes managing that moment — metering the air that pushes an already-seated BB — with pneumatic elements instead of complex mechanics. The body contains a rear block with a main valve triggered by the trigger, feeding a pneumatic displacement actuator in the front block.
Again: the principle useful to any maker is that loading and firing are two phases worth decoupling, and air can do work that pure mechanics used to do. That is not a license for anything; it is an idea you can use to diagnose your build.
Status and territory: why A1 is not B2
A published application gives you the right to know, not to sell. Real scope exists only upon grant, and only in the countries where that family actually grants. Meanwhile:
- You may freely study, cite and teach these documents: they are official publications.
- You must not present any product as an “authorized implementation” of them.
- If future product copy suggested practicing a granted, live claim, professional review comes before selling with that description.
Practical configuration comparison
What changes when you fit an alignment kit versus eyeballing it with a Pulsar:
| Aspect | Without kit | With v2.1 kit |
|---|---|---|
| Alignment reference | Rear face of the gearbox, arbitrary | Lower’s rear pin, fixed point |
| Nozzle-chamber concentricity | Hand-dependent | Guaranteed by dedicated cap |
| Chamber swap | Full re-tune | Swap with minimal recalibration |
For Pulsar D1/EON in M4/AR-15 AEG, the v2.1 lateral kit for GATE PULSAR D1 + GATE EON (EUR 23); for D2 with a MAXX chamber, the GATE Pulsar D2 + MAXX Model kit. Standard install: PLA+, 65–80 % infill, M3×4.2 inserts and M3×8 SHCS screws (not included), verify nozzle centering before the first feed test.
Maker reading: how to follow this family
Search Espacenet for “GATE Enterprise” plus class F41B and set alerts. You will see continuations, divisionals and perhaps grants in coming years. That tracking — not the PDF — is what determines whether scope eventually crystallizes and in which countries.
Conclusion
GATE’s applications are excellent teaching material on air-BB timing in HPA, and a reminder that publishing is not protecting. Our kits operate on another layer: lower geometry and chamber centering, touching neither the engine’s electronics nor its pneumatic train. If you build with Pulsar, the Wolverine + GATE Pulsar alignment guide and the kit catalog carry the compatibility detail for each configuration.
